Occasional crashes in meta_window_updates_are_frozen on touch input in X11
I have a "Dell XPS 13 2-in-1 7390" with a Wacom touchscreen. Every now and then I encounter crashes with the following backtrace:
#0 0x00007f0dd2ed9840 in meta_window_updates_are_frozen (window=0x0) at ../src/core/window.c:3822
#1 0x00007f0dd2eb33a4 in meta_window_actor_sync_updates_frozen (self=0x557f46c4d3a0) at ../src/compositor/meta-window-actor.c:1917
#2 0x00007f0dd2ea2c28 in meta_compositor_sync_updates_frozen (compositor=<optimized out>, window=<optimized out>) at ../src/compositor/compositor.c:658
#3 0x00007f0dd2efff97 in meta_window_x11_update_sync_request_counter (window=0x557f46bb2e80, new_counter_value=107281) at ../src/x11/window-x11.c:3834
#4 0x00007f0dd2eeaec7 in handle_other_xevent (x11_display=x11_display@entry=0x557f448b5ca0, event=event@entry=0x7ffe0c786b80) at ../src/x11/events.c:1254
#5 0x00007f0dd2eeba0b in meta_x11_display_handle_xevent (event=0x7ffe0c786b80, x11_display=0x557f448b5ca0) at ../src/x11/events.c:1857
#6 0x00007f0dd2eeba0b in xevent_filter (xevent=0x7ffe0c786b80, event=<optimized out>, data=0x557f448b5ca0) at ../src/x11/events.c:1899
#7 0x00007f0dd2b5a8bf in gdk_event_apply_filters (xevent=xevent@entry=0x7ffe0c786b80, event=event@entry=0x557f477298e0, window=window@entry=0x0) at ../../../../../gdk/x11/gdkeventsource.c:79
#8 0x00007f0dd2b5acaa in gdk_event_source_translate_event (xevent=0x7ffe0c786b80, event_source=0x557f44830010) at ../../../../../gdk/x11/gdkeventsource.c:198
#9 0x00007f0dd2b5acaa in _gdk_x11_display_queue_events (display=0x557f44283260) at ../../../../../gdk/x11/gdkeventsource.c:341
#10 0x00007f0dd2b23c10 in gdk_display_get_event (display=display@entry=0x557f44283260) at ../../../../gdk/gdkdisplay.c:441
#11 0x00007f0dd2b5a952 in gdk_event_source_dispatch (source=<optimized out>, callback=<optimized out>, user_data=<optimized out>) at ../../../../../gdk/x11/gdkeventsource.c:363
#12 0x00007f0dd3a14ead in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#13 0x00007f0dd3a15130 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#14 0x00007f0dd3a15403 in g_main_loop_run () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#15 0x00007f0dd2ec8cdc in meta_run () at ../src/core/main.c:676
#16 0x0000557f4421f845 in ()
#17 0x00007f0dd2c75bbb in __libc_start_main (main=0x557f4421f470, argc=1, argv=0x7ffe0c786f08, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe0c786ef8) at ../csu/libc-start.c:308
#18 0x0000557f4421fa2a in ()
I observe these mainly when dragging a finger to scroll in Firefox and Xournalpp. When the crash occurs, the shell restarts, and windows on the first virtual desktop appear to have been closed.
Version/machine info
-- System Information: Debian Release: bullseye/sid APT prefers testing APT policy: (990, 'testing'), (500, 'unstable-debug'), (500, 'stable-updates'), (500, 'unstable'), (500, 'stable'), (1, 'experimental') Architecture: amd64 (x86_64) Foreign Architectures: i386Kernel: Linux 5.4.0-rc7 (SMP w/8 CPU cores) Kernel taint flags: TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8), LANGUAGE=de_DE:de (charmap=UTF-8) Shell: /bin/sh linked to /usr/bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled
Versions of packages gnome-shell depends on: ii dconf-gsettings-backend [gsettings-backend] 0.34.0-1 ii evolution-data-server 3.34.1-1+b1 ii gir1.2-accountsservice-1.0 0.6.55-1 ii gir1.2-atspi-2.0 2.34.0-3 ii gir1.2-freedesktop 1.62.0-2 ii gir1.2-gcr-3 3.34.0-1 ii gir1.2-gdesktopenums-3.0 3.34.0-2 ii gir1.2-gdm-1.0 3.34.1-1 ii gir1.2-geoclue-2.0 2.5.5-1 ii gir1.2-glib-2.0 1.62.0-2 ii gir1.2-gnomebluetooth-1.0 3.34.0-1 ii gir1.2-gnomedesktop-3.0 3.34.1-1 ii gir1.2-gtk-3.0 3.24.12-2akpatch ii gir1.2-gweather-3.0 3.34.0-1 ii gir1.2-ibus-1.0 1.5.21-2 ii gir1.2-mutter-5 3.34.1+git20191107-1 ii gir1.2-nm-1.0 1.20.6-1 ii gir1.2-nma-1.0 1.8.24-1 ii gir1.2-pango-1.0 1.44.6-1 ii gir1.2-polkit-1.0 0.116-2 ii gir1.2-rsvg-2.0 2.44.14-1 ii gir1.2-soup-2.4 2.68.2-1 ii gir1.2-upowerglib-1.0 0.99.11-1 ii gjs 1.58.1-1 ii gnome-backgrounds 3.34.0-1 ii gnome-settings-daemon 3.34.1-1+b1 ii gnome-shell-common 3.34.1+git20191024-1 ii gsettings-desktop-schemas 3.34.0-2 ii libatk-bridge2.0-0 2.34.1-1 ii libatk1.0-0 2.34.1-1 ii libc6 2.29-3 ii libcairo2 1.16.0-4 ii libcroco3 0.6.13-1 ii libecal-2.0-1 3.34.1-1+b1 ii libedataserver-1.2-24 3.34.1-1+b1 ii libgcr-base-3-1 3.34.0-1 ii libgdk-pixbuf2.0-0 2.40.0+dfsg-1 ii libgirepository-1.0-1 1.62.0-2 ii libgjs0g 1.58.1-1 ii libgles2 1.1.0-1+b1 ii libglib2.0-0 2.62.2-3 ii libglib2.0-bin 2.62.2-3 ii libgnome-autoar-0-0 0.2.3-2 ii libgstreamer1.0-0 1.16.1-1 ii libgtk-3-0 3.24.12-2akpatch ii libical3 3.0.5-2 ii libjson-glib-1.0-0 1.4.4-2 ii libmutter-5-0 3.34.1+git20191107-1 ii libnm0 1.20.6-1 ii libpango-1.0-0 1.44.6-1 ii libpangocairo-1.0-0 1.44.6-1 ii libpolkit-agent-1-0 0.116-2 ii libpolkit-gobject-1-0 0.116-2 ii libpulse-mainloop-glib0 13.0-3 ii libpulse0 13.0-3 ii libsecret-1-0 0.19.1-1 ii libsystemd0 243-5 ii libwayland-server0 1.17.0-1 ii libx11-6 2:1.6.8-1 ii libxfixes3 1:5.0.3-1 ii mutter 3.34.1+git20191107-1 ii python3 3.7.5-1
Versions of packages gnome-shell recommends: ii bolt 0.8-4 ii chrome-gnome-shell 10.1-5 ii gdm3 3.34.1-1 ii gkbd-capplet 3.26.1-1 ii gnome-control-center 1:3.34.1-1 ii gnome-user-docs 3.34.0-2 ii ibus 1.5.21-2 ii iio-sensor-proxy 2.8-1 ii switcheroo-control 1.3.1-2 ii unzip 6.0-25
Versions of packages gnome-shell suggests: pn gir1.2-telepathyglib-0.12 pn gir1.2-telepathylogger-0.2
Versions of packages gnome-session depends on: ii gnome-session-bin 3.34.1-1 ii gnome-session-common 3.34.1-1 ii gnome-settings-daemon 3.34.1-1+b1
Versions of packages gnome-session suggests: ii desktop-base 10.0.3 ii gnome-keyring 3.34.0-1
Versions of packages gnome-settings-daemon depends on: ii gnome-settings-daemon-common 3.34.1-1 ii gsettings-desktop-schemas 3.34.0-2 ii libasound2 1.1.9-1 ii libc6 2.29-3 ii libcairo2 1.16.0-4 ii libcanberra-gtk3-0 0.30-7 ii libcanberra0 0.30-7 ii libcolord2 1.4.3-4 ii libcups2 2.3.0-6 ii libfontconfig1 2.13.1-2+b1 ii libgcr-base-3-1 3.34.0-1 ii libgdk-pixbuf2.0-0 2.40.0+dfsg-1 ii libgeoclue-2-0 2.5.5-1 ii libgeocode-glib0 3.26.1-1 ii libglib2.0-0 2.62.2-3 ii libgnome-desktop-3-18 3.34.1-1 ii libgtk-3-0 3.24.12-2akpatch ii libgudev-1.0-0 233-1 ii libgweather-3-16 3.34.0-1 ii liblcms2-2 2.9-3+b1 ii libmm-glib0 1.10.4-0.1 ii libnm0 1.20.6-1 ii libnotify4 0.7.8-1 ii libnspr4 2:4.23-1 ii libnss3 2:3.47-1 ii libpam-systemd 243-5 ii libpango-1.0-0 1.44.6-1 ii libpangocairo-1.0-0 1.44.6-1 ii libpolkit-gobject-1-0 0.116-2 ii libpulse-mainloop-glib0 13.0-3 ii libpulse0 13.0-3 ii libupower-glib3 0.99.11-1 ii libwacom2 1.1-1 ii libwayland-client0 1.17.0-1 ii libx11-6 2:1.6.8-1 ii libxext6 2:1.3.3-1+b2 ii libxi6 2:1.7.9-1
Versions of packages gnome-settings-daemon recommends: ii iio-sensor-proxy 2.8-1 ii pulseaudio 13.0-3
Versions of packages libgjs0g depends on: ii gir1.2-glib-2.0 1.62.0-2 ii libc6 2.29-3 ii libcairo-gobject2 1.16.0-4 ii libcairo2 1.16.0-4 ii libffi6 3.2.1-9 ii libgcc1 1:9.2.1-19 ii libgirepository-1.0-1 1.62.0-2 ii libglib2.0-0 2.62.2-3 ii libmozjs-60-0 60.8.0-2 ii libreadline8 8.0-3 ii libstdc++6 9.2.1-19 ii libx11-6 2:1.6.8-1
Versions of packages gnome-shell is related to: ii libegl-mesa0 [libegl-vendor] 19.2.3-1 ii libgl1-mesa-dri 19.2.3-1 ii libglx-mesa0 [libglx-vendor] 19.2.3-1
-- no debconf information
(Version "3.24.12-2akpatch" of GTK+3 is Debian's version 3.24.12-2 with gtk!1121 (merged) applied (which should only affect Wayland input).