Need help with setting up backintime

2 days ago I installed backintime on my laptop system and have been fairly pleased setting it up and let it do the first backups for different users ….
So much that I dared to start the same on my desktop, still my only system in a truly productive state.
The installation places 2 desktop entries for backtintime-qt (backintime’s GUI) into /usr/share/applications. Back In Time for the current user and Back In Time (root). Both work fine on the laptop.

The GUI for the current user has a problem on the desktop:
Its toolbar appears to be grayed out, but it’s clickable all the same. A click, e.g. on the Manage profiles button, however leads to this …

coredump
Process 76250 (python) of user 1000 dumped core.

Stack trace of thread 76250:
#0  0x00007fdbb169894c n/a (libc.so.6 + 0x9894c)
#1  0x00007fdbb163e410 raise (libc.so.6 + 0x3e410)
#2  0x00007fdbb162557a abort (libc.so.6 + 0x2557a)
#3  0x00007fdbaea91217 n/a (libQt6Core.so.6 + 0x91217)
#4  0x00007fdbaea920ec _ZNK14QMessageLogger5fatalEPKcz (libQt6Core.so.6 + 0x920ec)
#5  0x00007fdbab9c08fa n/a (QtCore.abi3.so + 0x1c08fa)
#6  0x00007fdbab9cefa1 n/a (QtCore.abi3.so + 0x1cefa1)
#7  0x00007fdbaebd4aab n/a (libQt6Core.so.6 + 0x1d4aab)
#8  0x00007fdbaf807800 _ZN7QAction8activateENS_11ActionEventE (libQt6Gui.so.6 + 0x607800)
#9  0x00007fdbaad05f7d n/a (libQt6Widgets.so.6 + 0x305f7d)
#10 0x00007fdbaad0a352 n/a (libQt6Widgets.so.6 + 0x30a352)
#11 0x00007fdbaab5c8a7 _ZN7QWidget5eventEP6QEvent (libQt6Widgets.so.6 + 0x15c8a7)
#12 0x00007fdbaab01dd0 _ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent (libQt6Widgets.so.6 + 0x101dd0)
#13 0x00007fdbaab05db7 _ZN12QApplication6notifyEP7QObjectP6QEvent (libQt6Widgets.so.6 + 0x105db7)
#14 0x00007fdbab4c7af7 n/a (QtWidgets.abi3.so + 0x2c7af7)
#15 0x00007fdbaeb68678 _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt6Core.so.6 + 0x168678)
#16 0x00007fdbaaaf7298 _ZN19QApplicationPrivate14sendMouseEventEP7QWidgetP11QMouseEventS1_S1_PS1_R8QPointerIS0_Ebb (libQt6Widgets.so.6 + 0xf7298)
#17 0x00007fdbaab7865f n/a (libQt6Widgets.so.6 + 0x17865f)
#18 0x00007fdbaab79568 n/a (libQt6Widgets.so.6 + 0x179568)
#19 0x00007fdbaab01dd0 _ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent (libQt6Widgets.so.6 + 0x101dd0)
#20 0x00007fdbab4c7af7 n/a (QtWidgets.abi3.so + 0x2c7af7)
#21 0x00007fdbaeb68678 _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt6Core.so.6 + 0x168678)
#22 0x00007fdbaf3a13cd _ZN22QGuiApplicationPrivate17processMouseEventEPN29QWindowSystemInterfacePrivate10MouseEventE (libQt6Gui.so.6 + 0x1a13cd)
#23 0x00007fdbaf4249b4 _ZN22QWindowSystemInterface22sendWindowSystemEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Gui.so.6 + 0x2249b4)
#24 0x00007fdbaf413d77 _ZN22QWindowSystemInterface23flushWindowSystemEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Gui.so.6 + 0x213d77)
#25 0x00007fdbaebc1a74 _ZN7QObject5eventEP6QEvent (libQt6Core.so.6 + 0x1c1a74)
#26 0x00007fdbaab01dd0 _ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent (libQt6Widgets.so.6 + 0x101dd0)
#27 0x00007fdbab4c7af7 n/a (QtWidgets.abi3.so + 0x2c7af7)
#28 0x00007fdbaeb68678 _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt6Core.so.6 + 0x168678)
#29 0x00007fdbaeb68a5b _ZN23QCoreApplicationPrivate16sendPostedEventsEP7QObjectiP11QThreadData (libQt6Core.so.6 + 0x168a5b)
#30 0x00007fdbaee437f8 n/a (libQt6Core.so.6 + 0x4437f8)
#31 0x00007fdbaf108880 n/a (libglib-2.0.so.0 + 0x5e880)
#32 0x00007fdbaf109cd7 n/a (libglib-2.0.so.0 + 0x5fcd7)
#33 0x00007fdbaf109ee5 g_main_context_iteration (libglib-2.0.so.0 + 0x5fee5)
#34 0x00007fdbaee3ffe2 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x43ffe2)
#35 0x00007fdbaeb74ca6 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 + 0x174ca6)
#36 0x00007fdbaeb6cd21 _ZN16QCoreApplication4execEv (libQt6Core.so.6 + 0x16cd21)
#37 0x00007fdbab4c3f4c n/a (QtWidgets.abi3.so + 0x2c3f4c)
#38 0x00007fdbb1b96213 n/a (libpython3.13.so.1.0 + 0x196213)
#39 0x00007fdbb1b620cb _PyObject_MakeTpCall (libpython3.13.so.1.0 + 0x1620cb)
#40 0x00007fdbb1b7697a _PyEval_EvalFrameDefault (libpython3.13.so.1.0 + 0x17697a)
#41 0x00007fdbb1c4e2c9 PyEval_EvalCode (libpython3.13.so.1.0 + 0x24e2c9)
#42 0x00007fdbb1c8c88c n/a (libpython3.13.so.1.0 + 0x28c88c)
#43 0x00007fdbb1c8985d n/a (libpython3.13.so.1.0 + 0x28985d)
#44 0x00007fdbb1c86f58 n/a (libpython3.13.so.1.0 + 0x286f58)
#45 0x00007fdbb1c86212 n/a (libpython3.13.so.1.0 + 0x286212)
#46 0x00007fdbb1c85b83 n/a (libpython3.13.so.1.0 + 0x285b83)
#47 0x00007fdbb1c83e51 Py_RunMain (libpython3.13.so.1.0 + 0x283e51)
#48 0x00007fdbb1c3bbeb Py_BytesMain (libpython3.13.so.1.0 + 0x23bbeb)
#49 0x00007fdbb1627675 n/a (libc.so.6 + 0x27675)
#50 0x00007fdbb1627729 __libc_start_main (libc.so.6 + 0x27729)
#51 0x00005601917cc045 _start (/usr/bin/python3.13 + 0x1045)

Stack trace of thread 76261:
#0  0x00007fdbb169f042 n/a (libc.so.6 + 0x9f042)
#1  0x00007fdbb16931ac n/a (libc.so.6 + 0x931ac)
#2  0x00007fdbb16931f4 n/a (libc.so.6 + 0x931f4)
#3  0x00007fdbb170d4ee __poll (libc.so.6 + 0x10d4ee)
#4  0x00007fdbaa8654a3 n/a (libQt6WaylandClient.so.6 + 0x654a3)
#5  0x00007fdbaed20e92 n/a (libQt6Core.so.6 + 0x320e92)
#6  0x00007fdbb16969cb n/a (libc.so.6 + 0x969cb)
#7  0x00007fdbb171aa0c n/a (libc.so.6 + 0x11aa0c)

Stack trace of thread 76263:
#0  0x00007fdbb16931ce n/a (libc.so.6 + 0x931ce)
#1  0x00007fdbb169381c n/a (libc.so.6 + 0x9381c)
#2  0x00007fdbb1695ede pthread_cond_wait (libc.so.6 + 0x95ede)
#3  0x00007fdbaed30840 _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x330840)
#4  0x00007fdbaf8a4710 _ZN17QFileInfoGatherer3runEv (libQt6Gui.so.6 + 0x6a4710)
#5  0x00007fdbaed20e92 n/a (libQt6Core.so.6 + 0x320e92)
#6  0x00007fdbb16969cb n/a (libc.so.6 + 0x969cb)
#7  0x00007fdbb171aa0c n/a (libc.so.6 + 0x11aa0c)

Stack trace of thread 76260:
#0  0x00007fdbb169f042 n/a (libc.so.6 + 0x9f042)
#1  0x00007fdbb16931ac n/a (libc.so.6 + 0x931ac)
#2  0x00007fdbb16931f4 n/a (libc.so.6 + 0x931f4)
#3  0x00007fdbb170d4ee __poll (libc.so.6 + 0x10d4ee)
#4  0x00007fdbaa8654a3 n/a (libQt6WaylandClient.so.6 + 0x654a3)
#5  0x00007fdbaed20e92 n/a (libQt6Core.so.6 + 0x320e92)
#6  0x00007fdbb16969cb n/a (libc.so.6 + 0x969cb)
#7  0x00007fdbb171aa0c n/a (libc.so.6 + 0x11aa0c)

Stack trace of thread 76292:
#0  0x00007fdbb169f042 n/a (libc.so.6 + 0x9f042)
#1  0x00007fdbb16931ac n/a (libc.so.6 + 0x931ac)
#2  0x00007fdbb169381c n/a (libc.so.6 + 0x9381c)
#3  0x00007fdbb16960e8 pthread_cond_timedwait (libc.so.6 + 0x960e8)
#4  0x00007fdbaed307b5 _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x3307b5)
#5  0x00007fdbaed2a540 n/a (libQt6Core.so.6 + 0x32a540)
#6  0x00007fdbaed20e92 n/a (libQt6Core.so.6 + 0x320e92)
#7  0x00007fdbb16969cb n/a (libc.so.6 + 0x969cb)
#8  0x00007fdbb171aa0c n/a (libc.so.6 + 0x11aa0c)

Stack trace of thread 76259:
#0  0x00007fdbb169f042 n/a (libc.so.6 + 0x9f042)
#1  0x00007fdbb16931ac n/a (libc.so.6 + 0x931ac)
#2  0x00007fdbb16931f4 n/a (libc.so.6 + 0x931f4)
#3  0x00007fdbb170da36 ppoll (libc.so.6 + 0x10da36)
#4  0x00007fdbaf109e04 n/a (libglib-2.0.so.0 + 0x5fe04)
#5  0x00007fdbaf109ee5 g_main_context_iteration (libglib-2.0.so.0 + 0x5fee5)
#6  0x00007fdbaee3ffe2 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x43ffe2)
#7  0x00007fdbaeb74ca6 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 + 0x174ca6)
#8  0x00007fdbaec88f06 _ZN7QThread4execEv (libQt6Core.so.6 + 0x288f06)
#9  0x00007fdbafb7ac2e n/a (libQt6DBus.so.6 + 0x37c2e)
#10 0x00007fdbaed20e92 n/a (libQt6Core.so.6 + 0x320e92)
#11 0x00007fdbb16969cb n/a (libc.so.6 + 0x969cb)
#12 0x00007fdbb171aa0c n/a (libc.so.6 + 0x11aa0c)

Stack trace of thread 76293:
#0  0x00007fdbb169f042 n/a (libc.so.6 + 0x9f042)
#1  0x00007fdbb16931ac n/a (libc.so.6 + 0x931ac)
#2  0x00007fdbb169381c n/a (libc.so.6 + 0x9381c)
#3  0x00007fdbb16960e8 pthread_cond_timedwait (libc.so.6 + 0x960e8)
#4  0x00007fdbaed307b5 _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x3307b5)
#5  0x00007fdbaed2a540 n/a (libQt6Core.so.6 + 0x32a540)
#6  0x00007fdbaed20e92 n/a (libQt6Core.so.6 + 0x320e92)
#7  0x00007fdbb16969cb n/a (libc.so.6 + 0x969cb)
#8  0x00007fdbb171aa0c n/a (libc.so.6 + 0x11aa0c)

Stack trace of thread 76280:
#0  0x00007fdbb169f042 n/a (libc.so.6 + 0x9f042)
#1  0x00007fdbb16931ac n/a (libc.so.6 + 0x931ac)
#2  0x00007fdbb16931f4 n/a (libc.so.6 + 0x931f4)
#3  0x00007fdbb170da36 ppoll (libc.so.6 + 0x10da36)
#4  0x00007fdbaf109e04 n/a (libglib-2.0.so.0 + 0x5fe04)
#5  0x00007fdbaf109ee5 g_main_context_iteration (libglib-2.0.so.0 + 0x5fee5)
#6  0x00007fdbaf109f32 n/a (libglib-2.0.so.0 + 0x5ff32)
#7  0x00007fdbaf14097c n/a (libglib-2.0.so.0 + 0x9697c)
#8  0x00007fdbb16969cb n/a (libc.so.6 + 0x969cb)
#9  0x00007fdbb171aa0c n/a (libc.so.6 + 0x11aa0c)

Stack trace of thread 76294:
#0  0x00007fdbb169f042 n/a (libc.so.6 + 0x9f042)
#1  0x00007fdbb16931ac n/a (libc.so.6 + 0x931ac)
#2  0x00007fdbb169381c n/a (libc.so.6 + 0x9381c)
#3  0x00007fdbb16960e8 pthread_cond_timedwait (libc.so.6 + 0x960e8)
#4  0x00007fdbaed307b5 _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x3307b5)
#5  0x00007fdbaed2a540 n/a (libQt6Core.so.6 + 0x32a540)
#6  0x00007fdbaed20e92 n/a (libQt6Core.so.6 + 0x320e92)
#7  0x00007fdbb16969cb n/a (libc.so.6 + 0x969cb)
#8  0x00007fdbb171aa0c n/a (libc.so.6 + 0x11aa0c)

Stack trace of thread 76295:
#0  0x00007fdbb169f042 n/a (libc.so.6 + 0x9f042)
#1  0x00007fdbb16931ac n/a (libc.so.6 + 0x931ac)
#2  0x00007fdbb169381c n/a (libc.so.6 + 0x9381c)
#3  0x00007fdbb16960e8 pthread_cond_timedwait (libc.so.6 + 0x960e8)
#4  0x00007fdbaed307b5 _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x3307b5)
#5  0x00007fdbaed2a540 n/a (libQt6Core.so.6 + 0x32a540)
#6  0x00007fdbaed20e92 n/a (libQt6Core.so.6 + 0x320e92)
#7  0x00007fdbb16969cb n/a (libc.so.6 + 0x969cb)
#8  0x00007fdbb171aa0c n/a (libc.so.6 + 0x11aa0c)

Stack trace of thread 76279:
#0  0x00007fdbb171876d syscall (libc.so.6 + 0x11876d)
#1  0x00007fdbaf1388ee g_cond_wait (libglib-2.0.so.0 + 0x8e8ee)
#2  0x00007fdbaf0cfebd n/a (libglib-2.0.so.0 + 0x25ebd)
#3  0x00007fdbaf141547 n/a (libglib-2.0.so.0 + 0x97547)
#4  0x00007fdbaf14097c n/a (libglib-2.0.so.0 + 0x9697c)
#5  0x00007fdbb16969cb n/a (libc.so.6 + 0x969cb)
#6  0x00007fdbb171aa0c n/a (libc.so.6 + 0x11aa0c)

Stack trace of thread 76281:
#0  0x00007fdbb169f042 n/a (libc.so.6 + 0x9f042)
#1  0x00007fdbb16931ac n/a (libc.so.6 + 0x931ac)
#2  0x00007fdbb16931f4 n/a (libc.so.6 + 0x931f4)
#3  0x00007fdbb170da36 ppoll (libc.so.6 + 0x10da36)
#4  0x00007fdbaf109e04 n/a (libglib-2.0.so.0 + 0x5fe04)
#5  0x00007fdbaf10a097 g_main_loop_run (libglib-2.0.so.0 + 0x60097)
#6  0x00007fdb9b33afe4 n/a (libgio-2.0.so.0 + 0x117fe4)
#7  0x00007fdbaf14097c n/a (libglib-2.0.so.0 + 0x9697c)
#8  0x00007fdbb16969cb n/a (libc.so.6 + 0x969cb)
#9  0x00007fdbb171aa0c n/a (libc.so.6 + 0x11aa0c)
ELF object binary architecture: AMD x86-64

I’ve compared all(?) files for backintime’s configuration on the 2 systems, but didn’t find any relevant looking difference. And yes, it rather seems to stem from the installed python. I had expected, that the installation would care for these (dependencies), but something must have gone wrong. But what? And how to fix it?

Edit (summary, solution):

Setting up backintime (“BIT”) essentially consists of configuring (“manging”) it’s profile(s).
And it has a nice GUI (backintime-qt) for this task. … as long as that doesn’t crash. ¹⁾
BIT’s CLI doesn’t include that, but @linux-aarhus’ hint to man backtime-config solves it perfectly.
¹) The crash of Back In Time, i.e. the user’s backintime-qt on one of 2 systems might be (loosely) related to https://github.com/bit-team/backintime/issues/2128, which is announced to be solved in version “1.6.0 (upcoming next) Due by December 31, 2025”.
But that has (for me) not that much importance anymore:
Setting up multiple profiles (not just for ~/…) and for multiple users turned out way more clear & consistent using solely Back In Time (root), which runs on both of my systems without an issue.

Yes - depending on your needs. personally, I don’t use the (root) option, I just use snapshots for the system.

Before you start, run snapshot and then do a full (main system) upgrade sudo pacman -Syu

  • Step 1: mv ~/.config/backintime ~/.config/backintime-MOVED
  • Step 2: Try backintime -h in terminal
  • Step 3: Try:
➤ LANG=en backintime-qt

Back In Time
Version: 1.5.6

Back In Time comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to redistribute it
under certain conditions; type `backintime --license' for details.
  • Step 4: If you have the GUI, do CtrlShiftP and report back.

I’m slightly curious of backintime-qt won’t be a good match for Gnome, and I’m using Plasma so I can’t answer that question here.

Moving on:

Yes, backintime-qt has known issues within the GNOME desktop environment, particularly when trying to open the profile management dialog. The problem appears to be a compatibility issue between the Qt application and the GNOME/GTK ecosystem.

Instead of running backintime-qt , try using:

LANG=enLANG=en backintime-qt backintime-qt

The crash occurs in the Qt library when processing the mouse event (see stack frames #16 to #18).

This could be an issue with your GNOME X11 or Wayland session… I don’t know.

Having seen that there are known issues for GNOME, I would suggest two possible actions:

  1. Install a PROPER desktop (i.e. Plasma) :stuck_out_tongue:
  2. Purge back-in-time and install Déjà Dup (more of a native GNOME app).

Deja-Dup (source)

… which doesn’t have the issue on both of my systems, anyway.
Topic is the problem with the user version on the desktop system only.

Had been done before and after the occurrence of the issue, anyway.

[tn@23ed538 ~]$ LC_ALL=C backintime -h
[tn@23ed538 ~]$ LC_ALL=C backintime -h
usage: backintime [-h] [--config PATH] [--share-path PATH] [--debug] [--profile NAME | --profile-id ID] [--quiet] [--version]
                  [--license] [--diagnostics]
                  {backup,backup-job,benchmark-cipher,check-config,decode,last-snapshot,last-snapshot-path,pw-cache,remove,remove-and-do-not-ask-again,restore,shutdown,smart-remove,snapshots-list,snapshots-list-path,snapshots-path,unmount} ...

Back In Time - a simple backup tool for GNU/Linux.

options:
  -h, --help            show this help message and exit
  --config PATH         Read config from PATH. Default = ~/.config/backintime/config
  --share-path PATH     Write runtime data (locks, messages, log and mountpoints) to PATH.
  --debug               Increase verbosity.
  --profile NAME        Select profile by NAME.
  --profile-id ID       Select profile by ID.
  --quiet               Be quiet. Suppress messages on stdout.
  --version, -v         show backintime's version number.
  --license             show backintime's license.
  --diagnostics         show helpful info for better support in case of issues (in JSON format)

Commands:
  {backup,backup-job,benchmark-cipher,check-config,decode,last-snapshot,last-snapshot-path,pw-cache,remove,remove-and-do-not-ask-again,restore,shutdown,smart-remove,snapshots-list,snapshots-list-path,snapshots-path,unmount}
    backup              Take a new snapshot. Ignore if the profile is not scheduled or if the machine is running on battery.
    backup-job          Take a new snapshot in background only if the profile is scheduled and the machine is not on battery.
                        This is used by cron jobs.
    benchmark-cipher    Show a benchmark of all ciphers for ssh transfer.
    check-config        Check the profiles configuration and install crontab entries.
    decode              Decode paths with 'encfsctl decode'
    last-snapshot       Show the ID of the last snapshot.
    last-snapshot-path  Show the path of the last snapshot.
    pw-cache            Control Password Cache for non-interactive cronjobs.
    remove              Remove a snapshot.
    remove-and-do-not-ask-again
                        Remove snapshots and don't ask for confirmation before. Be careful!
    restore             Restore files.
    shutdown            Shut down the computer after the snapshot is done.
    smart-remove        Remove snapshots based on "Smart Removal" pattern.
    snapshots-list      Show a list of snapshot IDs.
    snapshots-list-path
                        Show the paths to snapshots.
    snapshots-path      Show the path where snapshots are stored.
    unmount             Unmount the profile.

For backwards compatibility commands can also be used with trailing '--'. All listed arguments will work with all commands.
Some commands have extra arguments. Run 'backintime <COMMAND> -h' to see the extra arguments.
[tn@23ed538 ~]$ 
backintime's GUI dialog

Tried that several times during the last ~ 40 hrs. E.g. with adjusted versions of the config file copied from the laptop system (where it works - Gnome as well).
If you choose ͟x͟ No, the terminal-emulator resumes with listing the errors:

[tn@23ed538 ~]$ LC_ALL=C backintime-qt
[tn@23ed538 ~]$ LC_ALL=C backintime-qt

Back In Time
Version: 1.5.5

Back In Time comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to redistribute it
under certain conditions; type `backintime --license' for details.

Detected locale "C" with character encoding "ANSI_X3.4-1968", which is not UTF-8.
Qt depends on a UTF-8 locale, and has switched to "C.UTF-8" instead.
If this causes problems, reconfigure your locale. See the locale(1) manual
for more information.
WARNING: PyQt (the GUI library) could not install a translator for the language code "C". Standard GUI elements will fall back to the source language (English). This does not affect the translation of Back In Time-specific GUI elements.
Traceback (most recent call last):
  File "/usr/share/backintime/qt/app.py", line 2472, in <module>
    mainWindow = MainWindow(cfg, appInstance, qapp)
  File "/usr/share/backintime/qt/app.py", line 342, in __init__
    SettingsDialog(self).exec()
    ~~~~~~~~~~~~~~^^^^^^
  File "/usr/share/backintime/qt/manageprofiles/__init__.py", line 253, in __init__
    self._tab_retention = RemoveRetentionTab(self)
                          ~~~~~~~~~~~~~~~~~~^^^^^^
  File "/usr/share/backintime/qt/manageprofiles/tab_remove_retention.py", line 65, in __init__
    self._label_rule_execute_order()
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/usr/share/backintime/qt/manageprofiles/tab_remove_retention.py", line 177, in _label_rule_execute_order
    icon = self.style().standardPixmap(
        QStyle.StandardPixmap.SP_MessageBoxInformation)
TypeError: standardPixmap(self, standardPixmap: QStyle.StandardPixmap, opt: Optional[QStyleOption], widget: Optional[QWidget] = None): not enough arguments
[tn@23ed538 ~]$ 

→ to be expected:
… backintime-qt: error: argument command: invalid choice: 'backintime-qt' …

Have that (dual boot alongside my DE). Each logging into it confirms: That’s not made for me!
Configuring it to my preferences, if possible, would need several additional months & some 100 forum topics.

Backintime, including its GUI works well on my laptop system … under the same Gnome.
Getting the same QT6 install onto the desktop should do the trick.
But I don’t know which packages would provide the appropriate QT6 elements of the coredump.

Some weird locale messages coming up there, mine launches clean:

… just resulting from LC_ALL=C, without that it ‘launches clean’.

My opening …

… hasn’t been answered ⟹

Perhaps this could be viewed as an xy- (or rather as yx-) problem, or unsolicited advertising of a “PROPER” DE, which shows open topics galore in these forums …

While I’ve stumbled over an answer for toolbar 𝑎𝑝𝑝𝑒𝑎𝑟𝑠 to be grayed out¹⁾, I’ve not been able to find, let alone to cure the reason for the coredump.
¹) I don’t remember where - but maybe in ~/.config/qt6ct - I found a weird entry for icon-theme. Setting that to Adwaita cured the appearance - but not the behavior.

⟹ So it took a little longer to configure BiT to a fairly satisfying state.

Without a user-GUI on the desktop, I resorted to using the laptop for setting up a configuration that might serve my intents, copy it to the desktop and edit/adjust it to the desktop’s users and layout.
Although ~/.config/backintime/config is basically human readable, I had some problems interpreting entries, especially for scheduled backups. … and I haven’t found any documentation re its exact format.

Moreover, the laptop didn’t create the scheduled backups. (I’d so far only used manual initiation via the GUI there.) … and BiT’s complaint …

𝐄𝐫𝐫𝐨𝐫
⨂
Cron is not running despite the crontab command being available. Scheduled backup jobs will not run. Cron might be installed but not enabled. Try the command "systemctl enable cron" or consult the support channels of your GNU/Linux distribution.
[✓OK]

… hadn’t been exactly helpful. (No Cron to be found anywhere.)
To my surprise, the desktop did produce scheduled backups, albeit at unexpected times. The former probably due to the fact that I had set Timeshift to do snapshots on schedule (while it was to do that only on demand @ the laptop) and I remembered that it took a shutdown/restart there to make that effective (which didn’t help for BiT).
Perhaps reading non-related topics in this Support forum (what I’d recommend anyway for learning Manjaro’s subtleties) pointed me to cronie instead of Cron. Installing and starting that did the trick.
Moreover, its status report seemed to shed more light on the reason for the user-GUI’s crash:

[tn@23ed538 ~]$ systemctl status cronie
● cronie.service - Command Scheduler
     Loaded: loaded (/usr/lib/systemd/system/cronie.service; enabled; preset: disabled)
     Active: active (running) since Wed 2025-10-29 13:35:58 CET; 20h ago
 Invocation: 248f82d179d9476aad92b922ef4dffd5
   Main PID: 542 (crond)
      Tasks: 2 (limit: 37075)
     Memory: 9.5G (peak: 12G)
        CPU: 7min 30.219s
     CGroup: /system.slice/cronie.service
             ├─  542 /usr/sbin/crond -n
             └─91435 /usr/sbin/anacron -s

Okt 30 09:45:00 23ed538 CROND[97962]: pam_unix(crond:session): session closed for user tn
Okt 30 09:45:00 23ed538 backintime[98016]: Hauptprofil(1) :: INFO: Profile "Hauptprofil" is not scheduled to run now.
Okt 30 09:45:00 23ed538 python[98032]: qt.qpa.xcb: could not connect to display :2
Okt 30 09:45:00 23ed538 python[98032]: qt.qpa.plugin: From 6.5.0, xcb-cursor0 or libxcb-cursor0 is needed to load the Qt xcb platform plugin.
Okt 30 09:45:00 23ed538 python[98032]: qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.
Okt 30 09:45:00 23ed538 python[98032]: This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.
                                       
                                       Available platform plugins are: xcb, minimal, linuxfb, vkkhrdisplay, wayland, offscreen, minimalegl, eglfs, vnc, wayland-egl.
Okt 30 09:45:00 23ed538 systemd-coredump[98039]: [🡕] Process 98014 (python) of user 0 terminated abnormally without generating a coredump.
Okt 30 09:45:00 23ed538 backintime[98012]: configs@home(2) :: INFO: Profile "configs@home" is not scheduled to run now.
Okt 30 09:45:00 23ed538 systemd-coredump[98046]: [🡕] Process 98032 (python) of user 0 terminated abnormally without generating a coredump.
Okt 30 09:45:00 23ed538 backintime[98031]: data@workspace(3) :: INFO: Profile "data@workspace" is not scheduled to run now.
[tn@23ed538 ~]$

(I don’t know why meanwhile it doesn’t show these python complaints anymore - it still crashes anyway.)

So I resorted to my current work around: to use the root-GUI.
My earlier apprehension - that the backups wouldn’t be user accessible ²⁾ - did fortunately not prove true ³⁾ :

²) ↓ ·························· owned by root:root ······························ ↓ ³) ↙ owned by tn:tn
/mnt/bkp/backintime/23ed538/tn/data@workspace/20251109-111501-933/backup/…
/mnt/bkp/backintime/23ed538/tn/data@workspace/20251109-111501-933/backup/mnt/data/tn

…with all directories given d········x permissions.
Using the root-GUI I’m now able to configure my BiT-profiles.

But I still wonder why the user-GUI crashes on one machine and not on the other.
While both run BiT version 1.5.5, the kernels are Linux 66 / 616, but I won’t think that makes the difference.

Anyway, I’d highly appreciate answers to the above questions and where to find a detailed documentation re BiT’s config files, …/backintime/config, which the app pours all over the place (many more than just in ~/.config/ and ~/.local/share/).

… and because fresh system info seems to be a prime motivation for answering,
here’s the desktop’s …

[tn@23ed538 ~]$ inxi -zv8
System:
  Kernel: 6.6.107-1-MANJARO arch: x86_64 bits: 64 compiler: gcc v: 15.2.1
    clocksource: tsc avail: hpet,acpi_pm
    parameters: BOOT_IMAGE=/boot/vmlinuz-6.6-x86_64
    root=UUID=d25d1a9b-c6a7-48d7-a710-98f6ca1bb234 rw quiet splash
    udev.log_priority=3
  Desktop: GNOME v: 48.5 tk: GTK v: 3.24.50 wm: gnome-shell
    tools: gsd-screensaver-proxy dm: GDM v: 48.0 Distro: Manjaro
    base: Arch Linux
Machine:
  Type: Desktop System: FUJITSU product: ESPRIMO D538 v: N/A
    serial: <superuser required> Chassis: type: 3 serial: <superuser required>
  Mobo: FUJITSU model: D3600-A1 v: S26361-D3600-A1
    serial: <superuser required> uuid: <superuser required> UEFI: FUJITSU //
    American Megatrends v: 5.0.0.13 R1.21.0 for D3600-A1x date: 07/04/2019
Battery:
  Message: No system battery data found. Is one present?
Memory:
  System RAM: total: 32 GiB available: 30.2 GiB used: 19.78 GiB (65.5%)
  Message: For most reliable report, use superuser + dmidecode.
  Array-1: capacity: 64 GiB slots: 2 modules: 2 EC: None
    max-module-size: 32 GiB note: est.
  Device-1: DIMM CHA1 type: DDR4 detail: synchronous size: 16 GiB speed:
    spec: 3200 MT/s actual: 2400 MT/s volts: curr: 1 width (bits): data: 64
    total: 64 manufacturer: Crucial part-no: CP16G4DFRA32A.C8FF
    serial: <filter>
  Device-2: DIMM CHB2 type: DDR4 detail: synchronous size: 16 GiB speed:
    spec: 3200 MT/s actual: 2400 MT/s volts: note: check curr: 1 min: 1 max: 1
    width (bits): data: 64 total: 64 manufacturer: Crucial
    part-no: CP16G4DFRA32A.C8FF serial: <filter>
PCI Slots:
  Permissions: Unable to run dmidecode. Root privileges required.
CPU:
  Info: model: Intel Pentium Gold G5600 bits: 64 type: MT MCP
    arch: Coffee Lake level: v2 built: 2018 process: Intel 14nm family: 6
    model-id: 0x9E (158) stepping: 0xB (11) microcode: 0xF6
  Topology: cpus: 1x dies: 1 clusters: 2 cores: 2 threads: 4 tpc: 2
    smt: enabled cache: L1: 128 KiB desc: d-2x32 KiB; i-2x32 KiB L2: 512 KiB
    desc: 2x256 KiB L3: 4 MiB desc: 1x4 MiB
  Speed (MHz): avg: 800 min/max: 800/3900 scaling: driver: intel_pstate
    governor: powersave cores: 1: 800 2: 800 3: 800 4: 800 bogomips: 31211
  Flags: 3dnowprefetch abm acpi aes aperfmperf apic arat arch_capabilities
    arch_perfmon art bts clflush clflushopt cmov constant_tsc cpuid
    cpuid_fault cx16 cx8 de ds_cpl dtes64 dtherm dts epb ept ept_ad erms est
    flexpriority flush_l1d fpu fsgsbase fxsr ht hwp hwp_act_window hwp_epp
    hwp_notify ibpb ibpb_exit_to_user ibrs intel_pt invpcid lahf_lm lm mca
    mce md_clear mmx monitor movbe mpx msr mtrr nonstop_tsc nopl nx pae pat
    pbe pcid pclmulqdq pdcm pdpe1gb pebs pge pln pni popcnt pse pse36 pti pts
    rdrand rdseed rdtscp rep_good sdbg sep smap smep ss ssbd sse sse2 sse4_1
    sse4_2 ssse3 stibp syscall tm tm2 tpr_shadow tsc tsc_adjust
    tsc_deadline_timer vme vmx vnmi vpid x2apic xgetbv1 xsave xsavec xsaveopt
    xsaves xtopology xtpr
  Vulnerabilities:
  Type: gather_data_sampling status: Not affected
  Type: indirect_target_selection status: Not affected
  Type: itlb_multihit status: KVM: VMX disabled
  Type: l1tf mitigation: PTE Inversion; VMX: conditional cache flushes, SMT
    vulnerable
  Type: mds mitigation: Clear CPU buffers; SMT vulnerable
  Type: meltdown mitigation: PTI
  Type: mmio_stale_data mitigation: Clear CPU buffers; SMT vulnerable
  Type: reg_file_data_sampling status: Not affected
  Type: retbleed mitigation: IBRS
  Type: spec_rstack_overflow status: Not affected
  Type: spec_store_bypass mitigation: Speculative Store Bypass disabled via
    prctl
  Type: spectre_v1 mitigation: usercopy/swapgs barriers and __user pointer
    sanitization
  Type: spectre_v2 mitigation: IBRS; IBPB: conditional; STIBP: conditional;
    RSB filling; PBRSB-eIBRS: Not affected; BHI: Not affected
  Type: srbds mitigation: Microcode
  Type: tsa status: Not affected
  Type: tsx_async_abort status: Not affected
  Type: vmscape mitigation: IBPB before exit to userspace
Graphics:
  Device-1: Intel CoffeeLake-S GT2 [UHD Graphics 630]
    vendor: Fujitsu Solutions driver: i915 v: kernel arch: Gen-9.5
    process: Intel 14nm built: 2016-20 ports: active: HDMI-A-1,HDMI-A-2
    empty: DP-1, DP-2, DP-3, HDMI-A-3 bus-ID: 00:02.0 chip-ID: 8086:3e91
    class-ID: 0300
  Display: wayland server: X.org v: 1.21.1.18 with: Xwayland v: 24.1.8
    compositor: gnome-shell driver: gpu: i915 display-ID: 0
  Monitor-1: HDMI-A-1 model: Samsung S27D390 serial: <filter> built: 2015
    res: 1920x1080 dpi: 82 gamma: 1.2 chroma: red: x: 0.647 y: 0.337 green:
    x: 0.329 y: 0.616 blue: x: 0.145 y: 0.055 white: x: 0.314 y: 0.329
    size: 598x336mm (23.54x13.23") diag: 686mm (27") ratio: 16:9
    modes: 1920x1080, 1680x1050, 1600x900, 1280x1024, 1440x900, 1280x800,
    1152x864, 1280x720, 1024x768, 832x624, 800x600, 720x576, 720x480,
    640x480, 720x400
  Monitor-2: HDMI-A-2 model: HS156PC built: 2021 res: 1920x1080 dpi: 163
    gamma: 1.2 chroma: red: x: 0.639 y: 0.329 green: x: 0.298 y: 0.600 blue:
    x: 0.149 y: 0.059 white: x: 0.314 y: 0.329 size: 345x194mm (13.58x7.64")
    diag: 397mm (15.6") ratio: 5:4 modes: 1920x1080, 1600x900, 1280x1024,
    1152x864, 1280x720, 1024x768, 800x600, 640x480
  API: EGL v: 1.5 hw: drv: intel iris platforms: device: 0 drv: iris
    device: 1 drv: swrast gbm: drv: iris surfaceless: drv: iris wayland:
    drv: iris x11: drv: iris
  API: OpenGL v: 4.6 compat-v: 4.5 vendor: intel mesa v: 25.2.3-arch1.2
    glx-v: 1.4 direct-render: yes renderer: Mesa Intel UHD Graphics 630 (CFL
    GT2) device-ID: 8086:3e91 memory: 29.5 GiB unified: yes display-ID: :0.0
  Info: Tools: api: eglinfo,glxinfo x11: xdpyinfo,xprop
Audio:
  Device-1: Intel Cannon Lake PCH cAVS vendor: Fujitsu Solutions
    driver: snd_hda_intel v: kernel alternate: snd_soc_skl,snd_sof_pci_intel_cnl
    bus-ID: 00:1f.3 chip-ID: 8086:a348 class-ID: 0403
  API: ALSA v: k6.6.107-1-MANJARO status: kernel-api tools: N/A
  Server-1: PipeWire v: 1.4.8 status: active with: 1: pipewire-pulse
    status: active 2: wireplumber status: active 3: pipewire-alsa type: plugin
    4: pw-jack type: plugin tools: pactl,pw-cat,pw-cli,wpctl
Network:
  Device-1: Realtek RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet
    vendor: Fujitsu Solutions driver: r8169 v: kernel pcie: gen: 1
    speed: 2.5 GT/s lanes: 1 port: 3000 bus-ID: 01:00.0 chip-ID: 10ec:8168
    class-ID: 0200
  IF: enp1s0 state: up speed: 1000 Mbps duplex: full mac: <filter>
  IP v4: <filter> type: dynamic noprefixroute scope: global
    broadcast: <filter>
  IP v6: <filter> type: dynamic noprefixroute scope: global
  IP v6: <filter> type: dynamic noprefixroute scope: global
  IP v6: <filter> type: noprefixroute scope: link
  Device-2: Realtek RTL8188FTV 802.11b/g/n 1T1R 2.4G WLAN Adapter
    driver: rtl8xxxu type: USB rev: 2.0 speed: 480 Mb/s lanes: 1 mode: 2.0
    bus-ID: 1-8:6 chip-ID: 0bda:f179 class-ID: 0000 serial: <filter>
  IF: wlp0s20f0u8 state: up mac: <filter>
  IP v4: <filter> type: dynamic noprefixroute scope: global
    broadcast: <filter>
  IP v6: <filter> type: dynamic noprefixroute scope: global
  IP v6: <filter> type: dynamic noprefixroute scope: global
  IP v6: <filter> type: noprefixroute scope: link
  Info: services: NetworkManager, systemd-timesyncd, wpa_supplicant
  WAN IP: <filter>
Bluetooth:
  Device-1: Cambridge Silicon Radio Bluetooth Dongle (HCI mode) driver: btusb
    v: 0.8 type: USB rev: 2.0 speed: 12 Mb/s lanes: 1 mode: 1.1 bus-ID: 1-6:4
    chip-ID: 0a12:0001 class-ID: e001
  Report: rfkill ID: hci0 rfk-id: 0 state: up address: see --recommends
Logical:
  Message: No logical block device data found.
RAID:
  Message: No RAID data found.
Drives:
  Local Storage: total: 2.73 TiB used: 434.25 GiB (15.5%)
  SMART Message: Unable to run smartctl. Root privileges required.
  ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Crucial model: CT1000P3SSD8
    size: 931.51 GiB block-size: physical: 512 B logical: 512 B speed: 31.6 Gb/s
    lanes: 4 tech: SSD serial: <filter> fw-rev: P9CR30A temp: 27.9 C
    scheme: GPT
  ID-2: /dev/sda maj-min: 8:0 vendor: Western Digital
    model: WD20EFRX-68EUZN0 size: 1.82 TiB block-size: physical: 4096 B
    logical: 512 B speed: 6.0 Gb/s tech: HDD rpm: 5400 serial: <filter>
    fw-rev: 0A82 scheme: GPT
  Message: No optical or floppy data found.
Partition:
  ID-1: / raw-size: 93.13 GiB size: 91.11 GiB (97.83%) used: 25.1 GiB (27.5%)
    fs: ext4 dev: /dev/nvme0n1p3 maj-min: 259:3 label: cme1t.manjaro_g
    uuid: d25d1a9b-c6a7-48d7-a710-98f6ca1bb234
  ID-2: /boot/efi raw-size: 954 MiB size: 952.1 MiB (99.80%)
    used: 5.5 MiB (0.6%) fs: vfat dev: /dev/nvme0n1p1 maj-min: 259:1
    label: CME1T_EFI uuid: 4A16-8340
  ID-3: /home raw-size: 93.13 GiB size: 91.11 GiB (97.83%)
    used: 1.23 GiB (1.3%) fs: ext4 dev: /dev/nvme0n1p5 maj-min: 259:5
    label: cme1t.mg_home uuid: 98bd367d-22a4-4028-906e-2f5ae44f1f17
  ID-4: /mnt/bkp raw-size: 931.32 GiB size: 915.64 GiB (98.32%)
    used: 231.3 GiB (25.3%) fs: ext4 dev: /dev/sda1 maj-min: 8:1 label: wd2t.bkp
    uuid: 46399e9f-c924-418b-b49e-fd610ab96b4f
  ID-5: /mnt/data raw-size: 372.72 GiB size: 365.81 GiB (98.15%)
    used: 167.55 GiB (45.8%) fs: ext4 dev: /dev/nvme0n1p7 maj-min: 259:7
    label: cme1t.data uuid: 75b32bf9-4850-4499-94d6-cb737cc173d9
Swap:
  Kernel: swappiness: 60 (default) cache-pressure: 100 (default) zswap: yes
    compressor: zstd max-pool: 20%
  ID-1: swap-1 type: partition size: 36.32 GiB used: 9.06 GiB (25.0%)
    priority: -2 dev: /dev/nvme0n1p2 maj-min: 259:2 label: N/A
    uuid: 8a3d6405-5b6b-4989-9631-0d94e08239f5
Unmounted:
  ID-1: /dev/nvme0n1p4 maj-min: 259:4 size: 93.13 GiB fs: ext4
    label: cme1t.manjaro_k uuid: d82e7bbf-2581-4d11-91fa-5cf19f5efb6d
  ID-2: /dev/nvme0n1p6 maj-min: 259:6 size: 93.13 GiB fs: ext4
    label: cme1t.mk_home uuid: f66763f4-5866-4c31-9e2a-793571ac5adb
  ID-3: /dev/nvme0n1p8 maj-min: 259:8 size: 18.63 GiB fs: ext4
    label: cme1t.mg_test uuid: db10dd45-b09e-4aa9-8e5a-c9169aad751d
  ID-4: /dev/nvme0n1p9 maj-min: 259:9 size: 18.63 GiB fs: ext4
    label: cme1t.mgt_home uuid: 3f28027a-6fc9-4a3e-9e23-38c4bbdae08c
  ID-5: /dev/sda2 maj-min: 8:2 size: 372.9 GiB fs: ext4 label: wd2t.backup
    uuid: d13f645b-d2ee-4af6-9ae7-ed84a4355e2e
  ID-6: /dev/sda3 maj-min: 8:3 size: 1024 KiB fs: ext4 label: wd2t.dummy
    uuid: 1d8df0e9-6028-42e1-8c69-da2e78aba055
  ID-7: /dev/sda5 maj-min: 8:5 size: 558.79 GiB fs: ext4 label: wd2t.bkp.old
    uuid: 0ccc4358-5553-49be-a2d5-62fcce9e24d9
USB:
  Hub-1: 1-0:1 info: hi-speed hub with single TT ports: 16 rev: 2.0
    speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 chip-ID: 1d6b:0002
    class-ID: 0900
  Device-1: 1-2:2 info: SanDisk Ultra Fit type: mass storage
    driver: usb-storage interfaces: 1 rev: 2.1 speed: 480 Mb/s (57.2 MiB/s)
    lanes: 1 mode: 2.0 power: 224mA chip-ID: 0781:5583 class-ID: 0806
    serial: <filter>
  Device-2: 1-5:14 info: YICHIP Wireless Device type: keyboard,mouse
    driver: hid-generic,usbhid interfaces: 2 rev: 2.0 speed: 12 Mb/s (1.4 MiB/s)
    lanes: 1 mode: 1.1 power: 100mA chip-ID: 3151:1001 class-ID: 0301
  Device-3: 1-6:4 info: Cambridge Silicon Radio Bluetooth Dongle (HCI mode)
    type: bluetooth driver: btusb interfaces: 2 rev: 2.0
    speed: 12 Mb/s (1.4 MiB/s) lanes: 1 mode: 1.1 power: 100mA
    chip-ID: 0a12:0001 class-ID: e001
  Hub-2: 1-7:5 info: Genesys Logic Hub ports: 4 rev: 2.1
    speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 power: 100mA
    chip-ID: 05e3:0610 class-ID: 0900
  Device-1: 1-7.1:7 info: SHARKOON GmbH [Mediatrack Edge Mini Keyboard]
    type: keyboard,mouse driver: hid-generic,usbhid interfaces: 2 rev: 1.1
    speed: 12 Mb/s (1.4 MiB/s) lanes: 1 mode: 1.1 power: 100mA
    chip-ID: 1ea7:0066 class-ID: 0301
  Device-2: 1-8:6 info: Realtek RTL8188FTV 802.11b/g/n 1T1R 2.4G WLAN
    Adapter type: Network driver: rtl8xxxu interfaces: 1 rev: 2.0
    speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 power: 500mA
    chip-ID: 0bda:f179 class-ID: 0000 serial: <filter>
  Hub-3: 2-0:1 info: super-speed hub ports: 4 rev: 3.1
    speed: 10 Gb/s (1.16 GiB/s) lanes: 1 mode: 3.2 gen-2x1 chip-ID: 1d6b:0003
    class-ID: 0900
Sensors:
  System Temperatures: cpu: 40.0 C pch: 45.0 C mobo: N/A
  Fan Speeds (rpm): N/A
Repos:
  Packages: pm: dpkg pkgs: 0 pm: pacman pkgs: 1614 libs: 404
    tools: gnome-software,pamac,yay
  Active pacman repo servers in: /etc/pacman.d/mirrorlist
    1: https://mirror.alpix.eu/manjaro/stable/$repo/$arch
    2: https://mirror.raiolanetworks.com/manjaro/stable/$repo/$arch
    3: https://manjaro.ynh.ovh/stable/$repo/$arch
Processes:
  CPU top: 5 of 297
  1: cpu: 20.8% command: firefox pid: 3338 mem: 2242.2 MiB (7.2%)
  2: cpu: 18.2% command: gnome-shell pid: 1274 mem: 2199.3 MiB (7.1%)
  3: cpu: 7.8% command: firefox pid: 495948 mem: 3181.6 MiB (10.2%)
  4: cpu: 3.5% command: firefox pid: 3543 mem: 45.2 MiB (0.1%)
  5: cpu: 2.0% command: firefox pid: 4117 mem: 301.8 MiB (0.9%)
  Memory top: 5 of 297
  1: mem: 3181.6 MiB (10.2%) command: firefox pid: 495948 cpu: 7.8%
  2: mem: 2242.2 MiB (7.2%) command: firefox pid: 3338 cpu: 20.8%
  3: mem: 2199.3 MiB (7.1%) command: gnome-shell pid: 1274 cpu: 18.2%
  4: mem: 732.2 MiB (2.3%) command: firefox pid: 4393 cpu: 0.8%
  5: mem: 427.8 MiB (1.3%) command: firefox pid: 834415 cpu: 0.3%
Info:
  Processes: 297 Power: uptime: 7d 2h 31m states: freeze,mem,disk
    suspend: deep avail: s2idle wakeups: 7 hibernate: platform avail: shutdown,
    reboot, suspend, test_resume image: 12.07 GiB services: gsd-power,
    power-profiles-daemon, upowerd Init: systemd v: 257 default: graphical
    tool: systemctl
  Compilers: clang: 20.1.8 gcc: 15.2.1 Shell: Bash v: 5.3.3
    running-in: gnome-terminal inxi: 3.3.39
[tn@23ed538 ~]$

and the one for the laptop:

    ~  inxi -zv8                                                                                                                                        ✔ 
System:
  Kernel: 6.16.8-1-MANJARO arch: x86_64 bits: 64 compiler: gcc v: 15.2.1
    clocksource: tsc avail: acpi_pm
    parameters: BOOT_IMAGE=/boot/vmlinuz-6.16-x86_64
    root=UUID=ab46277f-9387-4ba4-a78d-c5d85119857d rw quiet splash apparmor=1
    security=apparmor udev.log_priority=3 sysrq_always_enabled=1
  Desktop: GNOME v: 48.5 tk: GTK v: 3.24.50 wm: gnome-shell
    tools: gsd-screensaver-proxy dm: GDM v: 48.0 Distro: Manjaro
    base: Arch Linux
Machine:
  Type: Laptop System: FUJITSU product: CELSIUS H780 v: N/A
    serial: <superuser required> Chassis: type: 10 serial: <superuser required>
  Mobo: FUJITSU model: FJNBB5D v: 757383-01R9500225
    serial: <superuser required> part-nu: SK00 uuid: <superuser required>
    UEFI: FUJITSU // Insyde v: Version 1.22 date: 11/16/2023
Battery:
  ID-1: BAT1 charge: 76.4 Wh (90.5%) condition: 84.5/96.5 Wh (87.6%)
    volts: 16.32 min: 14.4 model: PAC CP722160-01 type: Li-ion serial: <filter>
    charging: status: not charging cycles: 20
Memory:
  System RAM: total: 32 GiB available: 31 GiB used: 8.78 GiB (28.3%)
  Message: For most reliable report, use superuser + dmidecode.
  Array-1: capacity: 64 GiB slots: 4 modules: 2 EC: None
    max-module-size: 16 GiB note: est.
  Device-1: ChannelA-DIMM0 type: DDR4 detail: synchronous size: 16 GiB
    speed: 2400 MT/s volts: curr: 1 min: 1.35 max: 1.35 width (bits): data: 64
    total: 64 manufacturer: SK Hynix part-no: HMA82GS6AFR8N-UH
    serial: <filter>
  Device-2: ChannelA-DIMM1 type: no module installed
  Device-3: ChannelB-DIMM0 type: DDR4 detail: synchronous size: 16 GiB
    speed: 2400 MT/s volts: curr: 1 min: 1.35 max: 1.35 width (bits): data: 64
    total: 64 manufacturer: SK Hynix part-no: HMA82GS6AFR8N-UH
    serial: <filter>
  Device-4: ChannelB-DIMM1 type: no module installed
PCI Slots:
  Permissions: Unable to run dmidecode. Root privileges required.
CPU:
  Info: model: Intel Core i7-8750H bits: 64 type: MT MCP arch: Coffee Lake
    gen: core 8 level: v3 note: check built: 2018 process: Intel 14nm family: 6
    model-id: 0x9E (158) stepping: 0xA (10) microcode: 0xFA
  Topology: cpus: 1x dies: 1 clusters: 6 cores: 6 threads: 12 tpc: 2
    smt: enabled cache: L1: 384 KiB desc: d-6x32 KiB; i-6x32 KiB L2: 1.5 MiB
    desc: 6x256 KiB L3: 9 MiB desc: 1x9 MiB
  Speed (MHz): avg: 800 min/max: 800/4100 scaling: driver: intel_pstate
    governor: powersave cores: 1: 800 2: 800 3: 800 4: 800 5: 800 6: 800 7: 800
    8: 800 9: 800 10: 800 11: 800 12: 800 bogomips: 52799
  Flags: 3dnowprefetch abm acpi adx aes aperfmperf apic arat
    arch_capabilities arch_perfmon art avx avx2 bmi1 bmi2 bts clflush
    clflushopt cmov constant_tsc cpuid cpuid_fault cx16 cx8 de ds_cpl dtes64
    dtherm dts epb ept ept_ad erms est f16c flexpriority flush_l1d fma fpu
    fsgsbase fxsr ht hwp hwp_act_window hwp_epp hwp_notify ibpb ibrs ida
    intel_pt invpcid lahf_lm lm mca mce md_clear mmx monitor movbe mpx msr
    mtrr nonstop_tsc nopl nx pae pat pbe pcid pclmulqdq pdcm pdpe1gb pebs pge
    pln pni popcnt pse pse36 pti pts rdrand rdseed rdtscp rep_good sdbg sep
    smap smep ss ssbd sse sse2 sse4_1 sse4_2 ssse3 stibp syscall tm tm2
    tpr_shadow tsc tsc_adjust tsc_deadline_timer vme vmx vnmi vpid x2apic
    xgetbv1 xsave xsavec xsaveopt xsaves xtopology xtpr
  Vulnerabilities:
  Type: gather_data_sampling mitigation: Microcode
  Type: ghostwrite status: Not affected
  Type: indirect_target_selection status: Not affected
  Type: itlb_multihit status: KVM: Split huge pages
  Type: l1tf mitigation: PTE Inversion; VMX: conditional cache flushes, SMT
    vulnerable
  Type: mds mitigation: Clear CPU buffers; SMT vulnerable
  Type: meltdown mitigation: PTI
  Type: mmio_stale_data mitigation: Clear CPU buffers; SMT vulnerable
  Type: old_microcode status: Not affected
  Type: reg_file_data_sampling status: Not affected
  Type: retbleed mitigation: IBRS
  Type: spec_rstack_overflow status: Not affected
  Type: spec_store_bypass mitigation: Speculative Store Bypass disabled via
    prctl
  Type: spectre_v1 mitigation: usercopy/swapgs barriers and __user pointer
    sanitization
  Type: spectre_v2 mitigation: IBRS; IBPB: conditional; STIBP: conditional;
    RSB filling; PBRSB-eIBRS: Not affected; BHI: Not affected
  Type: srbds mitigation: Microcode
  Type: tsa status: Not affected
  Type: tsx_async_abort status: Not affected
  Type: vmscape mitigation: IBPB before exit to userspace
Graphics:
  Device-1: Intel CoffeeLake-H GT2 [UHD Graphics 630] vendor: Fujitsu
    driver: i915 v: kernel arch: Gen-9.5 process: Intel 14nm built: 2016-20
    ports: active: eDP-1 empty: none bus-ID: 00:02.0 chip-ID: 8086:3e9b
    class-ID: 0300
  Device-2: NVIDIA GP107GLM [Quadro P600 Mobile] vendor: Fujitsu
    driver: nvidia v: 580.82.09 alternate: nouveau,nova_core,nvidia_drm
    non-free: 550-580.xx+ status: current (as of 2025-08; EOL~2026-12-xx)
    arch: Pascal code: GP10x process: TSMC 16nm built: 2016-2021 pcie: gen: 1
    speed: 2.5 GT/s lanes: 16 link-max: gen: 3 speed: 8 GT/s ports:
    active: none empty: DP-1, DP-2, DP-3, DP-4, DP-5 bus-ID: 01:00.0
    chip-ID: 10de:1cbc class-ID: 0300
  Device-3: Chicony FJ Camera driver: uvcvideo type: USB rev: 2.0
    speed: 480 Mb/s lanes: 1 mode: 2.0 bus-ID: 1-7:4 chip-ID: 04f2:b3b4
    class-ID: 0e02 serial: <filter>
  Display: wayland server: X.org v: 1.21.1.18 with: Xwayland v: 24.1.8
    compositor: gnome-shell driver: X: loaded: modesetting,nvidia
    unloaded: nouveau alternate: fbdev,nv,vesa dri: iris gpu: i915
    display-ID: 0
  Monitor-1: eDP-1 model: BOE Display 0x0630 built: 2016 res: 1920x1080
    dpi: 142 gamma: 1.2 chroma: red: x: 0.584 y: 0.365 green: x: 0.349 y: 0.580
    blue: x: 0.161 y: 0.141 white: x: 0.314 y: 0.329
    size: 344x194mm (13.54x7.64") diag: 395mm (15.5") ratio: 16:9
    modes: 1920x1080
  API: EGL v: 1.5 hw: drv: intel iris drv: nvidia platforms: device: 0
    drv: nvidia device: 2 drv: iris device: 3 drv: swrast gbm: drv: nvidia
    surfaceless: drv: nvidia wayland: drv: iris x11: drv: iris
    inactive: device-1
  API: OpenGL v: 4.6.0 compat-v: 4.5 vendor: intel mesa v: 25.2.3-arch1.2
    glx-v: 1.4 direct-render: yes renderer: Mesa Intel UHD Graphics 630 (CFL
    GT2) device-ID: 8086:3e9b memory: 30.27 GiB unified: yes display-ID: :2.0
  Info: Tools: api: eglinfo,glxinfo gpu: nvidia-settings,nvidia-smi
    x11: xdpyinfo,xprop
Audio:
  Device-1: Intel Cannon Lake PCH cAVS vendor: Fujitsu driver: snd_hda_intel
    v: kernel alternate: snd_soc_avs,snd_sof_pci_intel_cnl bus-ID: 00:1f.3
    chip-ID: 8086:a348 class-ID: 0403
  Device-2: NVIDIA GP107GL High Definition Audio vendor: Fujitsu
    driver: snd_hda_intel v: kernel alternate: nova_core pcie: gen: 3
    speed: 8 GT/s lanes: 16 bus-ID: 01:00.1 chip-ID: 10de:0fb9 class-ID: 0403
  API: ALSA v: k6.16.8-1-MANJARO status: kernel-api with: aoss
    type: oss-emulator tools: alsactl,alsamixer,amixer
  Server-1: JACK v: 1.9.22 status: off tools: N/A
  Server-2: PipeWire v: 1.4.8 status: active with: 1: pipewire-pulse
    status: active 2: wireplumber status: active 3: pipewire-alsa type: plugin
    tools: pactl,pw-cat,pw-cli,wpctl
Network:
  Device-1: Intel Cannon Lake PCH CNVi WiFi driver: iwlwifi v: kernel
    bus-ID: 00:14.3 chip-ID: 8086:a370 class-ID: 0280
  IF: wlp0s20f3 state: up mac: <filter>
  IP v4: <filter> type: dynamic noprefixroute scope: global
    broadcast: <filter>
  IP v6: <filter> type: dynamic noprefixroute scope: global
  IP v6: <filter> type: dynamic noprefixroute scope: global
  IP v6: <filter> type: noprefixroute scope: link
  Device-2: Intel Ethernet I219-LM vendor: Fujitsu driver: e1000e v: kernel
    port: N/A bus-ID: 00:1f.6 chip-ID: 8086:15bb class-ID: 0200
  IF: enp0s31f6 state: up speed: 1000 Mbps duplex: full mac: <filter>
  IP v4: <filter> type: dynamic noprefixroute scope: global
    broadcast: <filter>
  IP v6: <filter> type: dynamic noprefixroute scope: global
  IP v6: <filter> type: dynamic noprefixroute scope: global
  IP v6: <filter> type: noprefixroute scope: link
  IF-ID-1: wwp0s20f0u4i12 state: down mac: <filter>
  Info: services: NetworkManager, systemd-timesyncd, wpa_supplicant
  WAN IP: <filter>
Bluetooth:
  Device-1: Intel Bluetooth 9460/9560 Jefferson Peak (JfP) driver: btusb
    v: 0.8 type: USB rev: 2.0 speed: 12 Mb/s lanes: 1 mode: 1.1 bus-ID: 1-14:5
    chip-ID: 8087:0aaa class-ID: e001
  Report: rfkill ID: hci0 rfk-id: 0 state: up address: see --recommends
Logical:
  Message: No logical block device data found.
RAID:
  Message: No RAID data found.
Drives:
  Local Storage: total: 476.94 GiB used: 71.43 GiB (15.0%)
  SMART Message: Required tool smartctl not installed. Check --recommends
  ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Samsung
    model: MZVLB512HAJQ-00007 size: 476.94 GiB block-size: physical: 512 B
    logical: 512 B speed: 31.6 Gb/s lanes: 4 tech: SSD serial: <filter>
    fw-rev: EXA7302Q temp: 29.9 C scheme: GPT
  Message: No optical or floppy data found.
Partition:
  ID-1: / raw-size: 46.57 GiB size: 45.53 GiB (97.78%) used: 21.84 GiB (48.0%)
    fs: ext4 dev: /dev/nvme0n1p3 maj-min: 259:3 label: sme_5.ManjaroGNM
    uuid: ab46277f-9387-4ba4-a78d-c5d85119857d
  ID-2: /boot/efi raw-size: 477 MiB size: 476 MiB (99.80%)
    used: 432 KiB (0.1%) fs: vfat dev: /dev/nvme0n1p1 maj-min: 259:1
    label: SME_5_EFI uuid: 407C-EF8F
  ID-3: /home raw-size: 9.31 GiB size: 9.07 GiB (97.38%)
    used: 5.99 GiB (66.0%) fs: ext4 dev: /dev/nvme0n1p5 maj-min: 259:5
    label: sme_5.MG_home uuid: 81135bcb-ea8f-40df-a191-f9f889f914e7
  ID-4: /mnt/bkp raw-size: 176.59 GiB size: 172.76 GiB (97.83%)
    used: 24.77 GiB (14.3%) fs: ext4 dev: /dev/nvme0n1p7 maj-min: 259:7
    label: sme_5.MG_backup uuid: c36ae656-eb75-4218-8828-26090d9b1dec
  ID-5: /mnt/data raw-size: 149.01 GiB size: 145.61 GiB (97.72%)
    used: 18.84 GiB (12.9%) fs: ext4 dev: /dev/nvme0n1p6 maj-min: 259:6
    label: sme_5.data uuid: fae9353f-dda4-4b69-9f6e-5179fa11200c
Swap:
  Kernel: swappiness: 60 (default) cache-pressure: 100 (default) zswap: yes
    compressor: zstd max-pool: 20%
  ID-1: swap-1 type: partition size: 39.12 GiB used: 0 KiB (0.0%)
    priority: -2 dev: /dev/nvme0n1p8 maj-min: 259:8 label: sme_5.swap
    uuid: 136dda25-3200-4c4d-8cd7-dce0de17bdd8
Unmounted:
  ID-1: /dev/nvme0n1p2 maj-min: 259:2 size: 46.57 GiB fs: ext4
    label: sme_5.ManjaroKDE uuid: 25f5f5ad-49fe-495c-861f-513c2bb77042
  ID-2: /dev/nvme0n1p4 maj-min: 259:4 size: 9.31 GiB fs: ext4
    label: sme_5.MK_home uuid: 2f771f65-7d0a-4dc7-9b37-decd655d959f
USB:
  Hub-1: 1-0:1 info: hi-speed hub with single TT ports: 16 rev: 2.0
    speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 chip-ID: 1d6b:0002
    class-ID: 0900
  Device-1: 1-2:2 info: Areson Corp Elecom MR-K013 Multicard Reader
    type: keyboard,mouse driver: hid-generic,usbhid interfaces: 2 rev: 1.1
    speed: 12 Mb/s (1.4 MiB/s) lanes: 1 mode: 1.1 power: 100mA
    chip-ID: 25a7:fa61 class-ID: 0301
  Device-2: 1-4:3 info: Sierra Wireless EM7455 type: communication,CDC-data
    driver: cdc_mbim interfaces: 5 rev: 2.0 speed: 480 Mb/s (57.2 MiB/s)
    lanes: 1 mode: 2.0 power: 500mA chip-ID: 1199:9075 class-ID: 0a00
    serial: <filter>
  Device-3: 1-7:4 info: Chicony FJ Camera type: video driver: uvcvideo
    interfaces: 2 rev: 2.0 speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0
    power: 500mA chip-ID: 04f2:b3b4 class-ID: 0e02 serial: <filter>
  Device-4: 1-14:5 info: Intel Bluetooth 9460/9560 Jefferson Peak (JfP)
    type: bluetooth driver: btusb interfaces: 2 rev: 2.0
    speed: 12 Mb/s (1.4 MiB/s) lanes: 1 mode: 1.1 power: 100mA
    chip-ID: 8087:0aaa class-ID: e001
  Hub-2: 2-0:1 info: super-speed hub ports: 10 rev: 3.1
    speed: 10 Gb/s (1.16 GiB/s) lanes: 1 mode: 3.2 gen-2x1 chip-ID: 1d6b:0003
    class-ID: 0900
Sensors:
  System Temperatures: cpu: 44.0 C pch: 47.0 C mobo: N/A
  Fan Speeds (rpm): N/A
Repos:
  Packages: pm: pacman pkgs: 1452 libs: 387 tools: gnome-software,pamac,yay
    pm: flatpak pkgs: 0
  Active pacman repo servers in: /etc/pacman.d/mirrorlist
    1: https://mirror.komelt.dev/manjaro/stable/$repo/$arch
    2: http://ftp.uni-kl.de/pub/linux/manjaro/stable/$repo/$arch
    3: https://mirror.alwyzon.net/manjaro/stable/$repo/$arch
    4: https://mirrors.eric.ovh/manjaro/stable/$repo/$arch
    5: https://mirror.raiolanetworks.com/manjaro/stable/$repo/$arch
    6: https://manjaro.ipacct.com/manjaro/stable/$repo/$arch
    7: https://mirror1.sox.rs/manjaro/stable/$repo/$arch
    8: https://ftpmirror1.infania.net/mirror/manjaro/stable/$repo/$arch
Processes:
  CPU top: 5 of 440
  1: cpu: 43.1% command: localsearch-extractor-3 pid: 432750
    mem: 37.6 MiB (0.1%)
  2: cpu: 3.8% command: gnome-shell pid: 3083 mem: 546.4 MiB (1.7%)
  3: cpu: 0.4% command: firefox pid: 219569 mem: 970.7 MiB (3.0%)
  4: cpu: 0.1% command: gnome-shell pid: 1629 mem: 302.8 MiB (0.9%)
  5: cpu: 0.1% command: gjs pid: 3794 mem: 87.5 MiB (0.2%)
  Memory top: 5 of 440
  1: mem: 1058.5 MiB (3.3%) command: firefox pid: 221203 cpu: 0.1%
  2: mem: 975.5 MiB (3.0%) command: firefox pid: 219917 cpu: 0.0%
  3: mem: 974.2 MiB (3.0%) command: firefox pid: 227227 cpu: 0.0%
  4: mem: 970.7 MiB (3.0%) command: firefox pid: 219569 cpu: 0.4%
  5: mem: 936.0 MiB (2.9%) command: firefox pid: 226742 cpu: 0.0%
Info:
  Processes: 440 Power: uptime: 11d 2h 33m states: freeze,mem,disk
    suspend: deep avail: s2idle wakeups: 6 hibernate: platform avail: shutdown,
    reboot, suspend, test_resume image: 12.34 GiB services: gsd-power,
    power-profiles-daemon, upowerd Init: systemd v: 257 default: graphical
    tool: systemctl
  Compilers: gcc: 15.2.1 Shell: Zsh v: 5.9 running-in: gnome-terminal
    inxi: 3.3.39
    ~                                                                                                                                            ✔  4s 
man backintime

and

man backintime-config
1 Like

Have read that at least 10 times with all its links and back & forth. ¹⁾
Much useful info but no detailed description of the config files, which are also not accessible from BiT’s cli.
(assuming you refer to that question and not the reason of the user-GUI crash)

¹) Edit:
this related to man backintime and most of https://github.com/bit-team/backintime and implicitly included all of https://backintime.readthedocs.io,
not to man backintime-config, which I didn’t find myself and which answers my question re setting up without BiT’s GUI.
My original (un-edited) answer related to the state, when that last line had not yet been appended above.

It might seem obvious, but wasn’t specifically mentioned; did you check that cron was actually running as the helpful not exactly helpful error message suggested?

Cron might be installed but not enabled. Try the command "systemctl enable cron"

1 Like

In Manjaro, that’s cronie :wink:

3 Likes

One can only react to the information provided. :wink:

:100:
Don’t remember to have seen that line before I answered in the post just underneath.
… and have no idea, why I didn’t find it myself - its exactly that detailed description I’d been looking for!

Well, that had obviously been my first handicap - until I read about cronie.

The crash of the GUI on 1 of 2 systems remains as last open question.

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