Nextcloud-client crashing with fresh install of Manjaro KDE

,

Package with problem: nextcloud-client-2.6.2-1

The client is crashing every single time since I first installed it, it works for some seconds and them crash.

System info:

Operating System: Manjaro Linux 
KDE Plasma Version: 5.17.5
KDE Frameworks Version: 5.66.0
Qt Version: 5.14.1
Kernel Version: 5.5.2-1-MANJARO
OS Type: 64-bit
Processors: 12 × AMD Ryzen 5 3600 6-Core Processor
Memory: 15,6 GiB

Core dump:

           PID: 2734 (nextcloud)
           UID: 1000 (carloshmm)
           GID: 1001 (carloshmm)
        Signal: 11 (SEGV)
     Timestamp: Wed 2020-02-12 21:54:11 -03 (55min ago)
  Command Line: nextcloud
    Executable: /usr/bin/nextcloud
 Control Group: /user.slice/user-1000.slice/session-1.scope
          Unit: session-1.scope
         Slice: user-1000.slice
       Session: 1
     Owner UID: 1000 (carloshmm)
       Boot ID: bff8fcd4571a46eaaa27b76af4892c89
    Machine ID: a3e06e2c57f549b9a69d71b2a82e0da0
      Hostname: carlos-pc
       Storage: /var/lib/systemd/coredump/core.nextcloud.1000.bff8fcd4571a46eaaa27b76af4892c89.2734.1581555251000000.lz4
       Message: Process 2734 (nextcloud) of user 1000 dumped core.
                
                Stack trace of thread 2757:
                #0  0x00007f964e586d84 n/a (libQt5Network.so.5)
                #1  0x00007f964e58611c n/a (libQt5Network.so.5)
                #2  0x00007f964e586490 n/a (libQt5Network.so.5)
                #3  0x00007f964e595e65 n/a (libQt5Network.so.5)
                #4  0x00007f964e641dd2 n/a (libQt5Network.so.5)
                #5  0x00007f964d53626a _ZN7QObject5eventEP6QEvent (libQt5Core.so.5)
                #6  0x00007f964dfa0362 _ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent (libQt5Widgets.so.5)
                #7  0x00007f964dfa9819 _ZN12QApplication6notifyEP7QObjectP6QEvent (libQt5Widgets.so.5)
                #8  0x00007f964d508962 _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt5Core.so.5)
                #9  0x00007f964d50b1c6 _ZN23QCoreApplicationPrivate16sendPostedEventsEP7QObjectiP11QThreadData (libQt5Core.so.5)
                #10 0x00007f964d5619d4 n/a (libQt5Core.so.5)
                #11 0x00007f9655f9639e g_main_context_dispatch (libglib-2.0.so.0)
                #12 0x00007f9655f981b1 n/a (libglib-2.0.so.0)
                #13 0x00007f9655f981f1 g_main_context_iteration (libglib-2.0.so.0)
                #14 0x00007f964d561020 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5)
                #15 0x00007f964d5074cc _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5)
                #16 0x00007f964d32be52 _ZN7QThread4execEv (libQt5Core.so.5)
                #17 0x00007f964d32cfc6 n/a (libQt5Core.so.5)
                #18 0x00007f964ccc44cf start_thread (libpthread.so.0)
                #19 0x00007f964ce4f2d3 __clone (libc.so.6)
                
                Stack trace of thread 2736:
                #0  0x00007f964ce449ef __poll (libc.so.6)
                #1  0x00007f9655f98120 n/a (libglib-2.0.so.0)
                #2  0x00007f9655f981f1 g_main_context_iteration (libglib-2.0.so.0)
                #3  0x00007f964d561020 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5)
                #4  0x00007f964d5074cc _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5)
                #5  0x00007f964d32be52 _ZN7QThread4execEv (libQt5Core.so.5)
                #6  0x00007f9655c82b28 n/a (libQt5DBus.so.5)
                #7  0x00007f964d32cfc6 n/a (libQt5Core.so.5)
                #8  0x00007f964ccc44cf start_thread (libpthread.so.0)
                #9  0x00007f964ce4f2d3 __clone (libc.so.6)
                
                Stack trace of thread 2735:
                #0  0x00007f964ce449ef __poll (libc.so.6)
                #1  0x00007f9647160630 n/a (libxcb.so.1)
                #2  0x00007f96471622db xcb_wait_for_event (libxcb.so.1)
                #3  0x00007f96433adb81 n/a (libQt5XcbQpa.so.5)
                #4  0x00007f964d32cfc6 n/a (libQt5Core.so.5)
                #5  0x00007f964ccc44cf start_thread (libpthread.so.0)
                #6  0x00007f964ce4f2d3 __clone (libc.so.6)
                
                Stack trace of thread 2753:
                #0  0x00007f964ce449ef __poll (libc.so.6)
                #1  0x00007f9655f98120 n/a (libglib-2.0.so.0)
                #2  0x00007f9655f990c3 g_main_loop_run (libglib-2.0.so.0)
                #3  0x00007f9655dd5bc8 n/a (libgio-2.0.so.0)
                #4  0x00007f9655f74bb1 n/a (libglib-2.0.so.0)
                #5  0x00007f964ccc44cf start_thread (libpthread.so.0)
                #6  0x00007f964ce4f2d3 __clone (libc.so.6)
                
                Stack trace of thread 2763:
                #0  0x00007f964ce449ef __poll (libc.so.6)
                #1  0x00007f9655f98120 n/a (libglib-2.0.so.0)
                #2  0x00007f9655f981f1 g_main_context_iteration (libglib-2.0.so.0)
                #3  0x00007f964d56103c _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5)
                #4  0x00007f964d5074cc _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5)
                #5  0x00007f964d32be52 _ZN7QThread4execEv (libQt5Core.so.5)
                #6  0x00007f964d32cfc6 n/a (libQt5Core.so.5)
                #7  0x00007f964ccc44cf start_thread (libpthread.so.0)
                #8  0x00007f964ce4f2d3 __clone (libc.so.6)
                
                Stack trace of thread 2764:
                #0  0x00007f964cccac45 pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
                #1  0x00007f964d332cb4 _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt5Core.so.5)
                #2  0x00007f964d332d92 _ZN14QWaitCondition4waitEP6QMutexm (libQt5Core.so.5)
                #3  0x00007f9655b299b6 _ZN3OCC12DiscoveryJob23remote_vio_opendir_hookEPKcPv (libnextcloudsync.so.0)
                #4  0x00007f9655a6c640 _Z17csync_vio_opendirP7csync_sPKc (libocsync.so.0)
                #5  0x00007f9655a63fb9 _Z9csync_ftwP7csync_sPKcPFiS0_St10unique_ptrI17csync_file_stat_sSt14default_deleteIS4_EEEj (libocsync.so.0)
                #6  0x00007f9655a64509 _Z9csync_ftwP7csync_sPKcPFiS0_St10unique_ptrI17csync_file_stat_sSt14default_deleteIS4_EEEj (libocsync.so.0)
                #7  0x00007f9655a64509 _Z9csync_ftwP7csync_sPKcPFiS0_St10unique_ptrI17csync_file_stat_sSt14default_deleteIS4_EEEj (libocsync.so.0)
                #8  0x00007f9655a64509 _Z9csync_ftwP7csync_sPKcPFiS0_St10unique_ptrI17csync_file_stat_sSt14default_deleteIS4_EEEj (libocsync.so.0)
                #9  0x00007f9655a64509 _Z9csync_ftwP7csync_sPKcPFiS0_St10unique_ptrI17csync_file_stat_sSt14default_deleteIS4_EEEj (libocsync.so.0)
                #10 0x00007f9655a64509 _Z9csync_ftwP7csync_sPKcPFiS0_St10unique_ptrI17csync_file_stat_sSt14default_deleteIS4_EEEj (libocsync.so.0)
                #11 0x00007f9655a64509 _Z9csync_ftwP7csync_sPKcPFiS0_St10unique_ptrI17csync_file_stat_sSt14default_deleteIS4_EEEj (libocsync.so.0)
                #12 0x00007f9655a64509 _Z9csync_ftwP7csync_sPKcPFiS0_St10unique_ptrI17csync_file_stat_sSt14default_deleteIS4_EEEj (libocsync.so.0)
                #13 0x00007f9655a64509 _Z9csync_ftwP7csync_sPKcPFiS0_St10unique_ptrI17csync_file_stat_sSt14default_deleteIS4_EEEj (libocsync.so.0)
                #14 0x00007f9655a522aa _Z12csync_updateP7csync_s (libocsync.so.0)
                #15 0x00007f9655b286f8 _ZN3OCC12DiscoveryJob5startEv (libnextcloudsync.so.0)
                #16 0x00007f9655af455b n/a (libnextcloudsync.so.0)
                #17 0x00007f964d53626a _ZN7QObject5eventEP6QEvent (libQt5Core.so.5)
                #18 0x00007f964dfa0362 _ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent (libQt5Widgets.so.5)
                #19 0x00007f964dfa9819 _ZN12QApplication6notifyEP7QObjectP6QEvent (libQt5Widgets.so.5)
                #20 0x00007f964d508962 _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt5Core.so.5)
                #21 0x00007f964d50b1c6 _ZN23QCoreApplicationPrivate16sendPostedEventsEP7QObjectiP11QThreadData (libQt5Core.so.5)
                #22 0x00007f964d5619d4 n/a (libQt5Core.so.5)
                #23 0x00007f9655f9639e g_main_context_dispatch (libglib-2.0.so.0)
                #24 0x00007f9655f981b1 n/a (libglib-2.0.so.0)
                #25 0x00007f9655f981f1 g_main_context_iteration (libglib-2.0.so.0)
                #26 0x00007f964d561020 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5)
                #27 0x00007f964d5074cc _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5)
                #28 0x00007f964d32be52 _ZN7QThread4execEv (libQt5Core.so.5)
                #29 0x00007f964d32cfc6 n/a (libQt5Core.so.5)
                #30 0x00007f964ccc44cf start_thread (libpthread.so.0)
                #31 0x00007f964ce4f2d3 __clone (libc.so.6)
                
                Stack trace of thread 2737:
                #0  0x00007f964ce449ef __poll (libc.so.6)
                #1  0x00007f9655f98120 n/a (libglib-2.0.so.0)
                #2  0x00007f9655f981f1 g_main_context_iteration (libglib-2.0.so.0)
                #3  0x00007f964d561020 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5)
                #4  0x00007f964d5074cc _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5)
                #5  0x00007f964d32be52 _ZN7QThread4execEv (libQt5Core.so.5)
                #6  0x00007f964d32cfc6 n/a (libQt5Core.so.5)
                #7  0x00007f964ccc44cf start_thread (libpthread.so.0)
                #8  0x00007f964ce4f2d3 __clone (libc.so.6)
                
                Stack trace of thread 2751:
                #0  0x00007f964ce449ef __poll (libc.so.6)
                #1  0x00007f9655f98120 n/a (libglib-2.0.so.0)
                #2  0x00007f9655f981f1 g_main_context_iteration (libglib-2.0.so.0)
                #3  0x00007f9655f98242 n/a (libglib-2.0.so.0)
                #4  0x00007f9655f74bb1 n/a (libglib-2.0.so.0)
                #5  0x00007f964ccc44cf start_thread (libpthread.so.0)
                #6  0x00007f964ce4f2d3 __clone (libc.so.6)
                
                Stack trace of thread 2734:
                #0  0x00007f964ce449ef __poll (libc.so.6)
                #1  0x00007f9655f98120 n/a (libglib-2.0.so.0)
                #2  0x00007f9655f981f1 g_main_context_iteration (libglib-2.0.so.0)
                #3  0x00007f964d561020 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5)
                #4  0x00007f964d5074cc _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5)
                #5  0x00007f964d50f4d6 _ZN16QCoreApplication4execEv (libQt5Core.so.5)
                #6  0x000055efe6156853 main (nextcloud)
                #7  0x00007f964cd77153 __libc_start_main (libc.so.6)
                #8  0x000055efe6156d8e _start (nextcloud)

Just to make sure - everything is up to date?
sudo pacman-mirrors -f && sudo pacman -Syyu

Just to mention: I am running the latest Nextcloud client (community version) with Manjaro Cinnamon (recently reinstalled), no issues there.

Already did it, actually I'm always with the system completely up to date.

Does Nextcloud requires qt5-base on Cinnamon as well? Because I think the culprit might be this file that is being shown on the stack trace:

$ pkgfile libQt5Network.so.5
extra/qt5-base

I am currently not able to check that for you (not at my Linux rig now) but I will do later on. I used the minimal ISO of Cinnamon this time and the package list indeed states
qt5-base 5.14.0-1 as being a part of it. So I am pretty sure it is a part of my setup now.

I just installed a fresh install of Manjaro Gnome and the problem happens on it too. My guess is that qt5 is not up to date on Cinnamon and the latest version of qt5 is breaking nextcloud-client somehow. I will keep using the web browser while a fix is not release. Thank you.

Well, that cannot be the case (Cinnamon) since I run that and my Nextcloud app works very smooth here so. Nextcloud desktop sync client 2.6.2-1 is my version. Next to that you mention you have installed Gnome and it happens there too? So it has nothing to do with Manjaro DE's but probably with Nextcloud.

I use Nextcloud client 2.6.2 on KDE Plasma with QT5 5.14.1. No issues here.

Since both KDE and Gnome Manjaro fresh installs are presenting the same problem my other guess is my CPU is causing this issue, since it is the new Zen2 architecture Ryzen 3600 with 6 cores and 12 threads and the stack trace is showing messages about thread pool errors.

Maybe. I have both a Ryzen 2700U with 4C/8T and a Ryzen 2700 with 8C/16T.

Maybe indeed, I am on an Intel i5, so that is also completely different😏

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