Bug#949710: /usr/bin/plasmashell: segfaults sporadically but only when using app dropdown menu
Hi Bernhard, you seem to be triaging a lot of segfault bugs recently ;-) >Usually when a segfault happens in 'dmesg' output should >appear two lines about this event. Maybe you could forward >these to the report too. We debugged this together, as it just happened when we were discussing the bugreport again. Interestingly enough, there is nothing related in dmesg (last entry a couple of minutes after boot). >If it is possible to install systemd-coredump a backtrace >would be automatically added to the journal, which could >be viewed by 'journalctl --no-pager'. We installed systemd-coredump. >[1] https://wiki.debian.org/HowToGetABacktrace#Installing_the_debugging_symbols We installed all debug symbol packages (from the goodies) and gdb-minimal (or does it need gdb full?) and will see when it happens next. Some more ideas: • it only happens on a Tuxedo laptop, but not on a Mac mini • while it happened, VMs (libvirt/virt-manager/SPICE-QXL) were in use Display is: lspci… 00:02.0 VGA compatible controller: Intel Corporation UHD Graphics 620 (rev 07) … and lshw… *-display description: VGA compatible controller product: Intel Corporation vendor: Intel Corporation physical id: 2 bus info: pci@:00:02.0 version: 07 width: 64 bits clock: 33MHz capabilities: pciexpress msi pm vga_controller bus_master cap_list rom configuration: driver=i915 latency=0 resources: irq:127 memory:db00-dbff memory:9000-9fff ioport:f000(size=64) memory:c-d As for the X video subsystem in use, xserver-xorg-video-all is installed and I don’t know how to find out the one in actual use, but the following X modules are loaded: [64.097] (II) LoadModule: "glx" [64.106] (II) LoadModule: "modesetting" [64.108] (II) LoadModule: "fbdev" [64.109] (II) LoadModule: "vesa" [64.129] (II) LoadModule: "fbdevhw" [64.130] (II) LoadModule: "glamoregl" [64.251] (II) LoadModule: "fb" [64.593] (II) LoadModule: "libinput" (This is just one more, fbdevhw, than my own laptop has.) I think it’s using KMS and no extra X driver. As to firmware, i915/kbl_dmc_ver1_04.bin (v1.4) is loaded, as are intel/ibt-12-16.ddc, intel/ibt-12-16.sfi, and others (iwlwifi, Blåtand, r8169) that are unrelated. Not sure how much this helps… bye, //mirabilos -- 15:39⎜«mika:#grml» mira|AO: "mit XFree86® wär’ das nicht passiert" - muhaha 15:48⎜ also warum machen die xorg Jungs eigentlich alles kaputt? :)15:49⎜ thkoehler: weil sie als Kinder nie den gebauten Turm selber umschmeissen durften? -- ~/.Xmodmap wonders…
Bug#949710: /usr/bin/plasmashell: segfaults sporadically but only when using app dropdown menu
Hello Sarah, I am sorry, but the given information might not be enough for the maintainers to solve the crash. Usually when a segfault happens in 'dmesg' output should appear two lines about this event. Maybe you could forward these to the report too. If it is possible to install systemd-coredump a backtrace would be automatically added to the journal, which could be viewed by 'journalctl --no-pager'. 'coredumpctl gdb' could also show these information and if the package gdb is also installed a '(gdb)' prompt should appear, where the command 'thread apply all bt full' should provide detailed information where the crash happened. This information would be much better if the package plasma-workspace-dbgsym and maybe some for shared libraries get installed from the repository described here [1]. (If output gets too much pages, maybe attach as file.) Kind regards Bernhard [1] https://wiki.debian.org/HowToGetABacktrace#Installing_the_debugging_symbols
Bug#949710: /usr/bin/plasmashell: segfaults sporadically but only when using app dropdown menu
Package: plasma-workspace Version: 4:5.14.5.1-1 Severity: normal Sporadically, when using the app dropdown menu (to select one of several windows of the same app), the dropdown menu is empty (and its width is only narrow) and when selecting this with mouseover, plasmashell crashes with segmentation fault. Attaching console output of such a crash. -- System Information: Debian Release: 10.2 APT prefers stable-updates APT policy: (500, 'stable-updates'), (500, 'stable') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 4.19.0-6-amd64 (SMP w/4 CPU cores) Locale: LANG=C.UTF-8, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE= (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages plasma-workspace depends on: ii dbus-x11 [dbus-session-bus] 1.12.16-1 ii drkonqi 5.14.5-1 ii frameworkintegration 5.54.0-1 ii gdb-minimal [gdb]8.2.1-2+b3 ii iso-codes4.2-1 ii kactivitymanagerd5.14.5-1 ii kded55.54.0-1 ii kinit5.54.0-1 ii kio 5.54.1-1 ii kpackagetool55.54.0-1 ii kwin-common 4:5.14.5-1 ii libappstreamqt2 0.12.5-1 ii libc62.28-10 ii libcolorcorrect5 4:5.14.5.1-1 ii libgcc1 1:8.3.0-6 ii libgps23 3.17-7 ii libice6 2:1.0.9-2 ii libkf5activities55.54.0-1 ii libkf5auth5 5.54.0-2 ii libkf5baloo5 5.54.0-1 ii libkf5bookmarks5 5.54.0-1 ii libkf5calendarevents55.54.0-1 ii libkf5completion55.54.0-1 ii libkf5config-bin 5.54.0-1+deb10u1 ii libkf5configcore55.54.0-1+deb10u1 ii libkf5configgui5 5.54.0-1+deb10u1 ii libkf5configwidgets5 5.54.0-1 ii libkf5coreaddons55.54.0-1 ii libkf5crash5 5.54.0-1 ii libkf5dbusaddons55.54.0-1 ii libkf5declarative5 5.54.0-1 ii libkf5globalaccel-bin5.54.0-1 ii libkf5globalaccel5 5.54.0-1 ii libkf5guiaddons5 5.54.0-1 ii libkf5holidays5 1:5.54.0-1 ii libkf5i18n5 5.54.0-1 ii libkf5iconthemes55.54.0-1 ii libkf5idletime5 5.54.0-1 ii libkf5itemviews5 5.54.0-1 ii libkf5jobwidgets55.54.0-1 ii libkf5js55.54.0-1 ii libkf5jsembed5 5.54.0-1 ii libkf5kdelibs4support5 5.54.0-1 ii libkf5kiocore5 5.54.1-1 ii libkf5kiofilewidgets55.54.1-1 ii libkf5kiogui55.54.1-1 ii libkf5kiowidgets55.54.1-1 ii libkf5networkmanagerqt6 5.54.0-1 ii libkf5newstuff5 5.54.0-2 ii libkf5notifications5 5.54.0-1 ii libkf5notifyconfig5 5.54.0-1 ii libkf5package5 5.54.0-1 ii libkf5plasma55.54.0-1 ii libkf5plasmaquick5 5.54.0-1 ii libkf5prison55.54.0-1+b2 ii libkf5quickaddons5 5.54.0-1 ii libkf5runner55.54.0-1 ii libkf5service-bin5.54.0-1 ii libkf5service5 5.54.0-1 ii libkf5solid5 5.54.0-1 ii libkf5texteditor55.54.0-1 ii libkf5textwidgets5 5.54.0-1 ii libkf5wallet-bin 5.54.0-1 ii libkf5wallet55.54.0-1 ii libkf5waylandclient5 4:5.54.0-1 ii libkf5widgetsaddons5 5.54.0-1 ii libkf5windowsystem5 5.54.0-1 ii libkf5xmlgui55.54.0-1 ii libkscreenlocker55.14.5-1 ii libksgrd74:5.14.5-1 ii libkworkspace5-5 4:5.14.5.1-1 ii libphonon4qt5-4 4:4.10.2-1 ii libplasma-geolocation-interface5 4:5.14.5.1-1 ii libprocesscore7 4:5.14.5-1 ii libprocessui74:5.14.5-1 ii libqalculate20 2.8.2-1 ii libqt5core5a
