Bug#1120120: gnome-shell: Caps Lock layout switch causes infinite‑loop freeze
Danial Behzadi
dani.behzi at ubuntu.com
Wed Nov 5 17:52:58 GMT 2025
Package: gnome-shell
Version: 49.1-5
Severity: important
X-Debbugs-Cc: dani.behzi at ubuntu.com
Dear Maintainer,
I had set Caps Lock for switching to another layout in GNOME Shell. The expected behaviour is:
Press Caps Lock → switch to the next layout.
Press Caps Lock again → return to the default layout.
And it was working fine till now. But after upgrading to GNOME Shell 49 on Debian testing, it switch the layout back quickly and after a few rapid presses, the session hangs and the CPU spikes up, sounds like an infinite‑loop in the layout‑switch handling.
-- System Information:
Debian Release: forky/sid
APT prefers testing
APT policy: (500, 'testing')
Architecture: amd64 (x86_64)
Kernel: Linux 6.16.12+deb14+1-amd64 (SMP w/4 CPU threads; PREEMPT)
Locale: LANG=fa_IR.UTF-8, LC_CTYPE=fa_IR.UTF-8 (charmap=UTF-8), LANGUAGE not set
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] 0.49.0-2
ii gir1.2-accountsservice-1.0 23.13.9-8
ii gir1.2-adw-1 1.8.1-1
ii gir1.2-atk-1.0 2.58.1-1
ii gir1.2-atspi-2.0 2.58.1-1
ii gir1.2-freedesktop 1.86.0-6
ii gir1.2-gcr-4 4.4.0.1-7
ii gir1.2-gdesktopenums-3.0 49.1-1
ii gir1.2-gdkpixbuf-2.0 2.44.4+dfsg-1
ii gir1.2-gdm-1.0 49.1-6
ii gir1.2-geoclue-2.0 2.7.2-2
ii gir1.2-glib-2.0 2.86.1-1
ii gir1.2-gnomebg-4.0 44.4-1
ii gir1.2-gnomebluetooth-3.0 47.1-2
ii gir1.2-gnomedesktop-4.0 44.4-1
ii gir1.2-graphene-1.0 1.10.8-5
ii gir1.2-gstreamer-1.0 1.26.7-1
ii gir1.2-gtk-4.0 4.20.2+ds-2
ii gir1.2-gweather-4.0 4.4.4-3
ii gir1.2-ibus-1.0 1.5.32-2
ii gir1.2-mutter-17 49.1.1-2
ii gir1.2-nm-1.0 1.54.1-1
ii gir1.2-nma4-1.0 1.10.6-7
ii gir1.2-pango-1.0 1.56.3-2
ii gir1.2-polkit-1.0 126-2
ii gir1.2-rsvg-2.0 2.60.0+dfsg-1+b1
ii gir1.2-soup-3.0 3.6.5-4
ii gir1.2-upowerglib-1.0 1.90.10-1
ii gjs 1.86.0-2
ii gnome-control-center 1:49.1-2
ii gnome-settings-daemon 49.1-2
ii gnome-shell-common 49.1-5
ii gsettings-desktop-schemas 49.1-1
ii gstreamer1.0-pipewire 1.4.9-1
ii libatk-bridge2.0-0t64 2.58.1-1
ii libatk1.0-0t64 2.58.1-1
ii libc6 2.41-12
ii libcairo2 1.18.4-1+b1
ii libecal-2.0-3 3.56.2-4
ii libedataserver-1.2-27t64 3.56.2-4
ii libgcr-4-4 4.4.0.1-7
ii libgdk-pixbuf-2.0-0 2.44.4+dfsg-1
ii libgirepository-2.0-0 2.86.1-1
ii libgjs0 1.86.0-2
ii libgles2 1.7.0-1+b2
ii libglib2.0-0t64 2.86.1-1
ii libglib2.0-bin 2.86.1-1
ii libgnome-autoar-0-0 0.4.5-4
ii libgnome-desktop-4-2t64 44.4-1
ii libgraphene-1.0-0 1.10.8-5
ii libgtk-4-1 4.20.2+ds-2
ii libical3t64 3.0.20-2
ii libjson-glib-1.0-0 1.10.8+ds-1
ii libmutter-17-0 49.1.1-2
ii libnm0 1.54.1-1
ii libpango-1.0-0 1.56.3-2
ii libpipewire-0.3-0t64 1.4.9-1
ii libpolkit-agent-1-0 126-2
ii libpolkit-gobject-1-0 126-2
ii libpulse-mainloop-glib0 17.0+dfsg1-2+b1
ii libpulse0 17.0+dfsg1-2+b1
ii libsecret-1-0 0.21.7-2
ii libsoup-3.0-0 3.6.5-4
ii libsystemd0 258.1-2
ii libx11-6 2:1.8.12-1
ii libxext6 2:1.3.4-1+b3
ii libxfixes3 1:6.0.0-2+b4
ii python3 3.13.7-1
ii tecla 49.0-1
Versions of packages gnome-shell recommends:
ii bolt 0.9.10-1
ii evolution-data-server 3.56.2-4
ii gdm3 49.1-6
ii gnome-browser-connector 42.1-7
ii gnome-menus 3.38.1-1
ii gnome-remote-desktop 49.1-2
ii gnome-user-docs 49.1-1
ii ibus 1.5.32-2
ii iio-sensor-proxy 3.8-1
ii power-profiles-daemon 0.30-1.1
pn switcheroo-control <none>
ii unzip 6.0-29
Versions of packages gnome-shell suggests:
ii gir1.2-malcontent-0 0.13.1-1
pn gir1.2-telepathyglib-0.12 <none>
pn gir1.2-telepathylogger-0.2 <none>
ii gnome-shell-extension-prefs 49.1-5
Versions of packages gnome-session depends on:
ii adwaita-icon-theme 49.0-1
ii fonts-cantarell 0.303.1-4
ii gnome-session-bin 49.1-3
ii gnome-session-common 49.1-3
ii gnome-settings-daemon 49.1-2
ii xdg-desktop-portal-gnome 49.0-1
ii xwayland 2:24.1.8-1
Versions of packages gnome-session suggests:
ii desktop-base 14.0.0~pre2
ii gnome-keyring 48.0-4
Versions of packages gnome-settings-daemon depends on:
ii gnome-settings-daemon-common 49.1-2
ii gsettings-desktop-schemas 49.1-1
ii libasound2t64 1.2.14-2
ii libc6 2.41-12
ii libcanberra0 0.30-18
ii libcolord2 1.4.8-2
ii libcups2t64 2.4.14-1
ii libfontconfig1 2.15.0-2.4
ii libgck-2-2 4.4.0.1-7
ii libgcr-4-4 4.4.0.1-7
ii libgeoclue-2-0 2.7.2-2
ii libgeocode-glib-2-0 3.26.4-2
ii libglib2.0-0t64 2.86.1-1
ii libgnome-desktop-4-2t64 44.4-1
ii libgudev-1.0-0 238-7
ii libgweather-4-0t64 4.4.4-3
ii libmm-glib0 1.24.2-1
ii libnm0 1.54.1-1
ii libnotify4 0.8.6-2
ii libp11-kit0 0.25.9-2
ii libpam-systemd [logind] 258.1-2
ii libpolkit-gobject-1-0 126-2
ii libpulse-mainloop-glib0 17.0+dfsg1-2+b1
ii libpulse0 17.0+dfsg1-2+b1
ii libspa-0.2-bluetooth 1.4.9-1
ii libsystemd0 258.1-2
ii libupower-glib3 1.90.10-1
ii libx11-6 2:1.8.12-1
ii libxfixes3 1:6.0.0-2+b4
ii pipewire-audio 1.4.9-1
Versions of packages gnome-settings-daemon recommends:
ii iio-sensor-proxy 3.8-1
ii pipewire-audio 1.4.9-1
ii pkexec 126-2
ii systemd-oomd 258.1-2
ii x11-xserver-utils 7.7+11
Versions of packages gnome-settings-daemon suggests:
pn usbguard <none>
Versions of packages gnome-shell is related to:
ii libegl-mesa0 [libegl-vendor] 25.2.6-1
ii libgl1-mesa-dri 25.2.6-1
ii libglx-mesa0 [libglx-vendor] 25.2.6-1
-- no debconf information
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