Well, you may want to create a new user and see if a fresh profile let you boot into Plasma Desktop …
1 Like
Ok so I created a new user and I’m able to log in to KDE just fine. I assume this means that KDE is just fine, and my main user bassam is ‘broken’. Anyone to ‘repair’ user bassam?
it simply means that you have some custom settings or plasmoids added which doesn’t work with the update. You can compare your home directories and config files to figure our what is broken. Mostly just some settings issue …
1 Like
If you dont mind resetting things you can do (from affected user)
cd ~/.config && for j in plasma*; do mv -- "$j" "${j%}.bak"; done && rm Trolltech.conf && kbuildsycoca5 --noincremental && cd ~
Honestly I haven’t installed anything recently. I avoid AUR packages. I mostly use VSCode, dbeaver, anything basically that a frontend dev uses, no games, etc.
I just checked the journal and it has a lot more going on:
Nov 21 19:57:53 bassam-manjaro kernel: blacklist: Problem blacklisting hash (-13)
Nov 21 19:57:53 bassam-manjaro kernel: blacklist: Problem blacklisting hash (-13)
Nov 21 19:57:53 bassam-manjaro kernel: blacklist: Problem blacklisting hash (-13)
Nov 21 19:57:53 bassam-manjaro kernel: blacklist: Problem blacklisting hash (-13)
Nov 21 19:57:53 bassam-manjaro kernel: blacklist: Problem blacklisting hash (-13)
Nov 21 19:57:53 bassam-manjaro kernel: blacklist: Problem blacklisting hash (-13)
Nov 21 19:57:53 bassam-manjaro kernel: usb 3-1.3: device descriptor read/64, error -32
Nov 21 19:57:55 bassam-manjaro kernel: gspca_vc032x: reg_r err -32
Nov 21 20:04:57 bassam-manjaro systemd-coredump[3600]: Process 3017 (startplasma-x11) of user 1000 dumped core.
Stack trace of thread 3017:
#0 0x00007fe31fcac83c n/a (libc.so.6 + 0x8e83c)
#1 0x00007fe31fc5c668 raise (libc.so.6 + 0x3e668)
#2 0x00007fe31fc444b8 abort (libc.so.6 + 0x264b8)
#3 0x00007fe31fe9ca6f _ZN9__gnu_cxx27__verbose_terminate_handlerEv (libstdc++.so.6 + 0x9ca6f)
#4 0x00007fe31feb011c _ZN10__cxxabiv111__terminateEPFvvE (libstdc++.so.6 + 0xb011c)
#5 0x00007fe31feb0189 _ZSt9terminatev (libstdc++.so.6 + 0xb0189)
#6 0x00007fe31feb043f __cxa_rethrow (libstdc++.so.6 + 0xb043f)
#7 0x00007fe3202a1556 n/a (libQt5Core.so.5 + 0xa1556)
#8 0x00007fe32054acaf n/a (libQt5Core.so.5 + 0x34acaf)
#9 0x00007fe32054b55b _ZNK9QMimeType8inheritsERK7QString (libQt5Core.so.5 + 0x34b55b)
#10 0x00007fe32122fd4c _ZN12KBuildSycoca8recreateEb (libKF5Service.so.5 + 0x53d4c)
#11 0x00007fe32121c4ff _ZN14KSycocaPrivate11buildSycocaEv (libKF5Service.so.5 + 0x404ff)
#12 0x00007fe32121c6de _ZN14KSycocaPrivate13checkDatabaseE6QFlagsINS_18BehaviorIfNotFoundEE (libKF5Service.so.5 + 0x406de)
#13 0x00007fe32121d963 _ZN7KSycoca16ensureCacheValidEv (libKF5Service.so.5 + 0x41963)
#14 0x00007fe3211fa7af _ZN8KService20serviceByDesktopNameERK7QString (libKF5Service.so.5 + 0x1e7af)
#15 0x000055d59e25a32e n/a (startplasma-x11 + 0x1832e)
#16 0x000055d59e254dba n/a (startplasma-x11 + 0x12dba)
#17 0x000055d59e24cde7 n/a (startplasma-x11 + 0xade7)
#18 0x00007fe31fc45cd0 n/a (libc.so.6 + 0x27cd0)
#19 0x00007fe31fc45d8a __libc_start_main (libc.so.6 + 0x27d8a)
#20 0x000055d59e24ed75 n/a (startplasma-x11 + 0xcd75)
ELF object binary architecture: AMD x86-64
Nov 21 20:05:00 bassam-manjaro systemd[3633]: Failed to start Update XDG user dir configuration.
Nov 21 20:58:21 bassam-manjaro bluetoothd[863]: Failed to add UUID: Authentication Failed (0x05)
Nov 21 20:58:21 bassam-manjaro kernel: Bluetooth: hci0: Opcode 0x c24 failed: -110
Nov 21 20:58:21 bassam-manjaro kernel: Bluetooth: hci0: command 0x0c24 tx timeout
Nov 21 23:22:57 bassam-manjaro systemd-coredump[12292]: Process 10708 (plasma-browser-) of user 1000 dumped core.
Stack trace of thread 10708:
#0 0x00007fe6daaac83c n/a (libc.so.6 + 0x8e83c)
#1 0x00007fe6daa5c668 raise (libc.so.6 + 0x3e668)
#2 0x00007fe6daa444b8 abort (libc.so.6 + 0x264b8)
#3 0x00007fe6dac9ca6f _ZN9__gnu_cxx27__verbose_terminate_handlerEv (libstdc++.so.6 + 0x9ca6f)
#4 0x00007fe6dacb011c _ZN10__cxxabiv111__terminateEPFvvE (libstdc++.so.6 + 0xb011c)
#5 0x00007fe6dacb0189 _ZSt9terminatev (libstdc++.so.6 + 0xb0189)
#6 0x00007fe6dacb043f __cxa_rethrow (libstdc++.so.6 + 0xb043f)
#7 0x00007fe6db0a1556 n/a (libQt5Core.so.5 + 0xa1556)
#8 0x00007fe6db34acaf n/a (libQt5Core.so.5 + 0x34acaf)
#9 0x00007fe6db34b55b _ZNK9QMimeType8inheritsERK7QString (libQt5Core.so.5 + 0x34b55b)
#10 0x00007fe6dc8b9d4c _ZN12KBuildSycoca8recreateEb (libKF5Service.so.5 + 0x53d4c)
#11 0x00007fe6dc8a64ff _ZN14KSycocaPrivate11buildSycocaEv (libKF5Service.so.5 + 0x404ff)
#12 0x00007fe6dc8a66de _ZN14KSycocaPrivate13checkDatabaseE6QFlagsINS_18BehaviorIfNotFoundEE (libKF5Service.so.5 + 0x406de)
#13 0x00007fe6dc8a7963 _ZN7KSycoca16ensureCacheValidEv (libKF5Service.so.5 + 0x41963)
#14 0x00007fe6dc883aff _ZN18KApplicationTrader5queryESt8functionIFbRK28QExplicitlySharedDataPointerI8KServiceEEE (libKF5Service.so.5 + 0x1daff)
#15 0x00007fe6dcb4958b _ZN11TaskManager21windowUrlFromMetadataERK7QStringj28QExplicitlySharedDataPointerI13KSharedConfigES2_ (libtaskmanager.so.6 + 0x5a58b)
#16 0x00007fe6dcb589b8 n/a (libtaskmanager.so.6 + 0x699b8)
#17 0x00007fe6dcb591ef n/a (libtaskmanager.so.6 + 0x6a1ef)
#18 0x00007fe6dcb5b5f1 _ZNK11TaskManager17XWindowTasksModel4dataERK11QModelIndexi (libtaskmanager.so.6 + 0x6c5f1)
#19 0x00007fe6db267876 _ZNK19QAbstractProxyModel4dataERK11QModelIndexi (libQt5Core.so.5 + 0x267876)
#20 0x000055df12eb2ee7 n/a (plasma-browser-integration-host + 0x10ee7)
#21 0x000055df12eb33a0 n/a (plasma-browser-integration-host + 0x113a0)
#22 0x000055df12eb505c n/a (plasma-browser-integration-host + 0x1305c)
#23 0x000055df12eaef90 n/a (plasma-browser-integration-host + 0xcf90)
#24 0x00007fe6daa45cd0 n/a (libc.so.6 + 0x27cd0)
#25 0x00007fe6daa45d8a __libc_start_main (libc.so.6 + 0x27d8a)
#26 0x000055df12eaf945 n/a (plasma-browser-integration-host + 0xd945)
Stack trace of thread 10717:
#0 0x00007fe6dab20f6f __poll (libc.so.6 + 0x102f6f)
#1 0x00007fe6d916c276 n/a (libglib-2.0.so.0 + 0xb8276)
#2 0x00007fe6d910c162 g_main_context_iteration (libglib-2.0.so.0 + 0x58162)
#3 0x00007fe6db2eaf7c _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2eaf7c)
#4 0x00007fe6db29ae74 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x29ae74)
#5 0x00007fe6db0f74f6 _ZN7QThread4execEv (libQt5Core.so.5 + 0xf74f6)
#6 0x00007fe6dc695a9a n/a (libQt5DBus.so.5 + 0x18a9a)
#7 0x00007fe6db0f371a n/a (libQt5Core.so.5 + 0xf371a)
#8 0x00007fe6daaaa9eb n/a (libc.so.6 + 0x8c9eb)
#9 0x00007fe6dab2e7cc n/a (libc.so.6 + 0x1107cc)
Stack trace of thread 10720:
#0 0x00007fe6dab2c73d syscall (libc.so.6 + 0x10e73d)
#1 0x00007fe6d91672b7 g_cond_wait (libglib-2.0.so.0 + 0xb32b7)
#2 0x00007fe6d90d91b4 n/a (libglib-2.0.so.0 + 0x251b4)
#3 0x00007fe6d9141a7e n/a (libglib-2.0.so.0 + 0x8da7e)
#4 0x00007fe6d913f9f5 n/a (libglib-2.0.so.0 + 0x8b9f5)
#5 0x00007fe6daaaa9eb n/a (libc.so.6 + 0x8c9eb)
#6 0x00007fe6dab2e7cc n/a (libc.so.6 + 0x1107cc)
Stack trace of thread 10721:
#0 0x00007fe6dab20f6f __poll (libc.so.6 + 0x102f6f)
#1 0x00007fe6d916c276 n/a (libglib-2.0.so.0 + 0xb8276)
#2 0x00007fe6d910c162 g_main_context_iteration (libglib-2.0.so.0 + 0x58162)
#3 0x00007fe6d910c1b2 n/a (libglib-2.0.so.0 + 0x581b2)
#4 0x00007fe6d913f9f5 n/a (libglib-2.0.so.0 + 0x8b9f5)
#5 0x00007fe6daaaa9eb n/a (libc.so.6 + 0x8c9eb)
#6 0x00007fe6dab2e7cc n/a (libc.so.6 + 0x1107cc)
Stack trace of thread 10718:
#0 0x00007fe6dab20f6f __poll (libc.so.6 + 0x102f6f)
#1 0x00007fe6d998620b n/a (libxcb.so.1 + 0xd20b)
#2 0x00007fe6d9987f3d xcb_wait_for_event (libxcb.so.1 + 0xef3d)
#3 0x00007fe6d572cfa2 n/a (libQt5XcbQpa.so.5 + 0x62fa2)
#4 0x00007fe6db0f371a n/a (libQt5Core.so.5 + 0xf371a)
#5 0x00007fe6daaaa9eb n/a (libc.so.6 + 0x8c9eb)
#6 0x00007fe6dab2e7cc n/a (libc.so.6 + 0x1107cc)
Stack trace of thread 10722:
#0 0x00007fe6dab20f6f __poll (libc.so.6 + 0x102f6f)
#1 0x00007fe6d916c276 n/a (libglib-2.0.so.0 + 0xb8276)
#2 0x00007fe6d910eb97 g_main_loop_run (libglib-2.0.so.0 + 0x5ab97)
#3 0x00007fe6d627c14c n/a (libgio-2.0.so.0 + 0x11214c)
#4 0x00007fe6d913f9f5 n/a (libglib-2.0.so.0 + 0x8b9f5)
#5 0x00007fe6daaaa9eb n/a (libc.so.6 + 0x8c9eb)
#6 0x00007fe6dab2e7cc n/a (libc.so.6 + 0x1107cc)
ELF object binary architecture: AMD x86-64
Nov 21 23:30:04 bassam-manjaro systemd-coredump[14309]: Process 13433 (plasma-browser-) of user 1000 dumped core.
Stack trace of thread 13433:
#0 0x00007f08ead6183c n/a (libc.so.6 + 0x8e83c)
#1 0x00007f08ead11668 raise (libc.so.6 + 0x3e668)
#2 0x00007f08eacf94b8 abort (libc.so.6 + 0x264b8)
#3 0x00007f08e949ca6f _ZN9__gnu_cxx27__verbose_terminate_handlerEv (libstdc++.so.6 + 0x9ca6f)
#4 0x00007f08e94b011c _ZN10__cxxabiv111__terminateEPFvvE (libstdc++.so.6 + 0xb011c)
#5 0x00007f08e94b0189 _ZSt9terminatev (libstdc++.so.6 + 0xb0189)
#6 0x00007f08e94b043f __cxa_rethrow (libstdc++.so.6 + 0xb043f)
#7 0x00007f08e98a1556 n/a (libQt5Core.so.5 + 0xa1556)
#8 0x00007f08e9b4acaf n/a (libQt5Core.so.5 + 0x34acaf)
#9 0x00007f08e9b4b55b _ZNK9QMimeType8inheritsERK7QString (libQt5Core.so.5 + 0x34b55b)
#10 0x00007f08eb0f1d4c _ZN12KBuildSycoca8recreateEb (libKF5Service.so.5 + 0x53d4c)
#11 0x00007f08eb0de4ff _ZN14KSycocaPrivate11buildSycocaEv (libKF5Service.so.5 + 0x404ff)
#12 0x00007f08eb0de6de _ZN14KSycocaPrivate13checkDatabaseE6QFlagsINS_18BehaviorIfNotFoundEE (libKF5Service.so.5 + 0x406de)
#13 0x00007f08eb0df963 _ZN7KSycoca16ensureCacheValidEv (libKF5Service.so.5 + 0x41963)
#14 0x00007f08eb0bbaff _ZN18KApplicationTrader5queryESt8functionIFbRK28QExplicitlySharedDataPointerI8KServiceEEE (libKF5Service.so.5 + 0x1daff)
#15 0x00007f08eb38158b _ZN11TaskManager21windowUrlFromMetadataERK7QStringj28QExplicitlySharedDataPointerI13KSharedConfigES2_ (libtaskmanager.so.6 + 0x5a58b)
#16 0x00007f08eb3909b8 n/a (libtaskmanager.so.6 + 0x699b8)
#17 0x00007f08eb3911ef n/a (libtaskmanager.so.6 + 0x6a1ef)
#18 0x00007f08eb3935f1 _ZNK11TaskManager17XWindowTasksModel4dataERK11QModelIndexi (libtaskmanager.so.6 + 0x6c5f1)
#19 0x00007f08e9a67876 _ZNK19QAbstractProxyModel4dataERK11QModelIndexi (libQt5Core.so.5 + 0x267876)
#20 0x0000562a268f7ee7 n/a (plasma-browser-integration-host + 0x10ee7)
#21 0x0000562a268f83a0 n/a (plasma-browser-integration-host + 0x113a0)
#22 0x0000562a268fa05c n/a (plasma-browser-integration-host + 0x1305c)
#23 0x0000562a268f3f90 n/a (plasma-browser-integration-host + 0xcf90)
#24 0x00007f08eacfacd0 n/a (libc.so.6 + 0x27cd0)
#25 0x00007f08eacfad8a __libc_start_main (libc.so.6 + 0x27d8a)
#26 0x0000562a268f4945 n/a (plasma-browser-integration-host + 0xd945)
Stack trace of thread 13438:
#0 0x00007f08eadd5f6f __poll (libc.so.6 + 0x102f6f)
#1 0x00007f08e7d6c276 n/a (libglib-2.0.so.0 + 0xb8276)
#2 0x00007f08e7d0c162 g_main_context_iteration (libglib-2.0.so.0 + 0x58162)
#3 0x00007f08e7d0c1b2 n/a (libglib-2.0.so.0 + 0x581b2)
#4 0x00007f08e7d3f9f5 n/a (libglib-2.0.so.0 + 0x8b9f5)
#5 0x00007f08ead5f9eb n/a (libc.so.6 + 0x8c9eb)
#6 0x00007f08eade37cc n/a (libc.so.6 + 0x1107cc)
Stack trace of thread 13435:
#0 0x00007f08eadd5f6f __poll (libc.so.6 + 0x102f6f)
#1 0x00007f08e7d6c276 n/a (libglib-2.0.so.0 + 0xb8276)
#2 0x00007f08e7d0c162 g_main_context_iteration (libglib-2.0.so.0 + 0x58162)
#3 0x00007f08e9aeaf7c _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2eaf7c)
#4 0x00007f08e9a9ae74 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x29ae74)
#5 0x00007f08e98f74f6 _ZN7QThread4execEv (libQt5Core.so.5 + 0xf74f6)
#6 0x00007f08eaecda9a n/a (libQt5DBus.so.5 + 0x18a9a)
#7 0x00007f08e98f371a n/a (libQt5Core.so.5 + 0xf371a)
#8 0x00007f08ead5f9eb n/a (libc.so.6 + 0x8c9eb)
#9 0x00007f08eade37cc n/a (libc.so.6 + 0x1107cc)
Stack trace of thread 13436:
#0 0x00007f08eadd5f6f __poll (libc.so.6 + 0x102f6f)
#1 0x00007f08e7c4520b n/a (libxcb.so.1 + 0xd20b)
#2 0x00007f08e7c46f3d xcb_wait_for_event (libxcb.so.1 + 0xef3d)
#3 0x00007f08e3f2cfa2 n/a (libQt5XcbQpa.so.5 + 0x62fa2)
#4 0x00007f08e98f371a n/a (libQt5Core.so.5 + 0xf371a)
#5 0x00007f08ead5f9eb n/a (libc.so.6 + 0x8c9eb)
#6 0x00007f08eade37cc n/a (libc.so.6 + 0x1107cc)
Stack trace of thread 13437:
#0 0x00007f08eade173d syscall (libc.so.6 + 0x10e73d)
#1 0x00007f08e7d672b7 g_cond_wait (libglib-2.0.so.0 + 0xb32b7)
#2 0x00007f08e7cd91b4 n/a (libglib-2.0.so.0 + 0x251b4)
#3 0x00007f08e7d41a7e n/a (libglib-2.0.so.0 + 0x8da7e)
#4 0x00007f08e7d3f9f5 n/a (libglib-2.0.so.0 + 0x8b9f5)
#5 0x00007f08ead5f9eb n/a (libc.so.6 + 0x8c9eb)
#6 0x00007f08eade37cc n/a (libc.so.6 + 0x1107cc)
Stack trace of thread 13439:
#0 0x00007f08eadd5f6f __poll (libc.so.6 + 0x102f6f)
#1 0x00007f08e7d6c276 n/a (libglib-2.0.so.0 + 0xb8276)
#2 0x00007f08e7d0eb97 g_main_loop_run (libglib-2.0.so.0 + 0x5ab97)
#3 0x00007f08e4ab914c n/a (libgio-2.0.so.0 + 0x11214c)
#4 0x00007f08e7d3f9f5 n/a (libglib-2.0.so.0 + 0x8b9f5)
#5 0x00007f08ead5f9eb n/a (libc.so.6 + 0x8c9eb)
#6 0x00007f08eade37cc n/a (libc.so.6 + 0x1107cc)
ELF object binary architecture: AMD x86-64
Nov 21 23:37:13 bassam-manjaro kernel: watchdog: watchdog0: watchdog did not stop!
Wish I could do a git diff bassam..testuser 
Well mostly it is in your .config folders:
diff -Npur /home/user1/.config /home/user2/.config > changes.diff
1 Like
I also added a new user via tty3. I managed to login as well. The old user is indeed broken with this update. After trying config diff, it doesn’t seem to show any major differences.
9 total (mostly tuxedo-control-center)
I’m curious to see how we can get ourselves out of this one.
At least it looks like we’re on the right track.
AT
So I ended up doing it all from that section in the link:
$ for j in plasma*; do mv -- "$j" "${j%}.bak"; done
$ rm ~/.config/Trolltech.conf
$ kbuildsycoca5 --noincremental
$ rm -rf ~/.cache/*
Made no difference. One thing that I did notice when rebuilding the cache, not sure if it means anything:
I guess there is a widget that is broken? Will keep at it.
Yes this one is a toughy. I’ve been using manjaro for 9-10 years now, can’t imagine my life without it. I do a fresh install every 4 years or so, the last install being about 1 year ago, don’t want to do it again so soon.
I wonder if you want to try rebuilding the cache from this link, note that it had no effect on my machine.
EDIT can you also post the output from journalctl -p3 -b-1? Here’s what I’m getting, maybe there’s a pattern here.
Nov 22 01:23:08 bassam-manjaro kernel: blacklist: Problem blacklisting hash (-13)
Nov 22 01:23:08 bassam-manjaro kernel: blacklist: Problem blacklisting hash (-13)
Nov 22 01:23:08 bassam-manjaro kernel: blacklist: Problem blacklisting hash (-13)
Nov 22 01:23:08 bassam-manjaro kernel: blacklist: Problem blacklisting hash (-13)
Nov 22 01:23:08 bassam-manjaro kernel: blacklist: Problem blacklisting hash (-13)
Nov 22 01:23:08 bassam-manjaro kernel: blacklist: Problem blacklisting hash (-13)
Nov 22 01:23:08 bassam-manjaro kernel: usb 3-1.3: device descriptor read/64, error -32
Nov 22 01:23:09 bassam-manjaro kernel: gspca_vc032x: reg_r err -32
Nov 22 01:30:12 bassam-manjaro systemd-coredump[4045]: Process 3059 (startplasma-x11) of user 1000 dumped core.
Stack trace of thread 3059:
#0 0x00007f593dcac83c n/a (libc.so.6 + 0x8e83c)
#1 0x00007f593dc5c668 raise (libc.so.6 + 0x3e668)
#2 0x00007f593dc444b8 abort (libc.so.6 + 0x264b8)
#3 0x00007f593de9ca6f _ZN9__gnu_cxx27__verbose_terminate_handlerEv (libstdc++.so.6 + 0x9ca6f)
#4 0x00007f593deb011c _ZN10__cxxabiv111__terminateEPFvvE (libstdc++.so.6 + 0xb011c)
#5 0x00007f593deb0189 _ZSt9terminatev (libstdc++.so.6 + 0xb0189)
#6 0x00007f593deb043f __cxa_rethrow (libstdc++.so.6 + 0xb043f)
#7 0x00007f593e2a1556 n/a (libQt5Core.so.5 + 0xa1556)
#8 0x00007f593e54acaf n/a (libQt5Core.so.5 + 0x34acaf)
#9 0x00007f593e54b55b _ZNK9QMimeType8inheritsERK7QString (libQt5Core.so.5 + 0x34b55b)
#10 0x00007f593f1e6d4c _ZN12KBuildSycoca8recreateEb (libKF5Service.so.5 + 0x53d4c)
#11 0x00007f593f1d34ff _ZN14KSycocaPrivate11buildSycocaEv (libKF5Service.so.5 + 0x404ff)
#12 0x00007f593f1d4963 _ZN7KSycoca16ensureCacheValidEv (libKF5Service.so.5 + 0x41963)
#13 0x00007f593f1b17af _ZN8KService20serviceByDesktopNameERK7QString (libKF5Service.so.5 + 0x1e7af)
#14 0x00005577430b132e n/a (startplasma-x11 + 0x1832e)
#15 0x00005577430abdba n/a (startplasma-x11 + 0x12dba)
#16 0x00005577430a3de7 n/a (startplasma-x11 + 0xade7)
#17 0x00007f593dc45cd0 n/a (libc.so.6 + 0x27cd0)
#18 0x00007f593dc45d8a __libc_start_main (libc.so.6 + 0x27d8a)
#19 0x00005577430a5d75 n/a (startplasma-x11 + 0xcd75)
ELF object binary architecture: AMD x86-64
Nov 22 01:30:15 bassam-manjaro systemd[4082]: Failed to start Update XDG user dir configuration.
Nov 22 01:44:01 bassam-manjaro systemd-logind[854]: Failed to start autovt@tty3.service: Transaction for getty@tty3.service/start is destructive (reboot.target has 'start' job queued, but 'stop' is included in transaction).
Nov 22 01:44:03 bassam-manjaro kernel: Bluetooth: hci0: Opcode 0x c1a failed: -110
Nov 22 01:44:03 bassam-manjaro kernel: Bluetooth: hci0: command 0x0c1a tx timeout
Nov 22 01:44:03 bassam-manjaro kernel: watchdog: watchdog0: watchdog did not stop!
I solved the failing login to plasma with help from Arch forum 
But I cannot post links yet. In short:
I’ve tracked down the json problem to ~/.local/share/mime/packages and ~/.local/share/mime/mime.cache. For some reason putting either of these back into my home folder instantly breaks everything. I’m not, however, sure if this is the cause of all of my problems. It is a good start, though. I’m not seeing anything broken by that file and directory not being there so I’m just going to ignore that for now. I also managed to rebuild my mime.cache with “mkdir ~/.local/share/mime/packages && update-mime-database ~/.local/share/mime”
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Thank you! This has helped with my plasma installation
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The next question is what in the ‘bad’ path?
(looking at a relatively fresh install shows ~/.local/share/mime does not exist)
Happened to me last night. Got in from work, booted the computer, and started to do some office work. Noticed there were updates so ran them. I’ve been running Manjaro KDE Plasma for nearly 3 years and never ever had a problem, so I just go ahead and run updates whenever they are available.
Afterwards could not boot. I’d get to the normal login screen, but after putting in my password and hitting return it would just freeze.
Could access the system via tty but did not manage to fix it.
Thought it might have been the base (arch / manjaro), so installed debian’s plasma. I’d cleaned out my home directory first as I suspected it was something in my plasma theming. But after I brought some stuff back into my home directory it happened again. Couldn’t fix it so went to bed.
I found this post this morning and used the advice to nuke everything from my home folder. That fixed it. I could boot straight back in.
But because I was worried this might happen again sometime soon, especially with the switch to wayland coming up for plasma, I am now on Manjaro Gnome. I installed it this morning, and have had a bit of a battle getting used to how different things are.
I really like plasma but I’m going to force myself to stay on gnome for a while, get used to it, and see what I think. Right now it’s working well.
Just want to say thanks to the devs at Manjaro. I like what you build - thanks. In 3 years this is the first problem I’ve ever had. With windows this kind of thing used to happen to me every few months. And on windows I did not have dotfiles to bring my setttings back. Doing a reinstall was a nightmare of configuring every single program on the computer from scratch.
edit
…
My laptop was setup exactly like the desktop. It was my desktop that crashed and burned.
Today after thinking about it for a while, and getting rid of all the theming I’ve installed on the laptop, I ran sudo pacman -Syyu, and no problems. I thought the same thing might happen on the laptop but it updated perfectly and is running fine. I have no idea what the difference is. Probably some tiny little config file that I don’t even know exists.
Very good!
This was the solution to my problem as well. Using TTY3 I deleted the packages dir and mime cache. Rebuilt them and restarted. Login was successful.
Your help in this matter was greatly appreciated. Somebody get this man a beer.
Cheers
AT
@tommetomme MVP right here! 
rm -rf ~/.local/share/mime
mkdir ~/.local/share/mime
mkdir ~/.local/share/mime/packages
update-mime-database ~/.local/share/mime
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Can someone who comes here please show us what was in that directory before removing it?
Thanks 
PS
mkdir -p ~/.local/share/mime/packages
~/.local/share/mime-bak $ tree -a -C -L 1 -F --dirsfirst
./
├── application/
├── audio/
├── font/
├── image/
├── inode/
├── message/
├── model/
├── multipart/
├── packages/
├── text/
├── video/
├── x-content/
├── x-epoc/
├── aliases
├── .directory
├── generic-icons
├── globs
├── globs2
├── icons
├── magic
├── mime.cache
├── subclasses
├── treemagic
├── types
├── version
└── XMLnamespaces
All of those appear to be present in default/working system files; ex /usr/share/mime … so its something deeper, such as inside the applications directory.
I can post this later if you want, let me know. Thanks again for your help!
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