Bug#854373: kwin-x11: kwin sometimes hangs with 100% cpu for kwin_x11
Package: kwin-x11
Version: 4:5.8.2-1+b1
Severity: normal
Dear Maintainer,
sometimes kwin_x11 hangs and can only be killed (SIGKILL, not SIGTERM)
via a console. Afterwards compositing is disabled. This happens quite
regularily with the current versions and the nvidia driver (375.26-2),
which probably should be fixed in the freeze before the stable release.
The steps to restart it without killing the session are quite a bit of
work:
- switch to linux console
- killall -9 kwin kwin_x11;sleep 3;DISPLAY=:0 kwin & exit
- switch to the X-Server again
- Sometimes you need to kill kwin again (focus on windows works again
now) and restart it
- Use systemsettings to re-enable compositing
- Use kwin --replace to get a working instance again
I am not sure what is causing the problems, but it happens too often as
i would recommend including it in this version into a stable release.
-- System Information:
Debian Release: 9.0
APT prefers testing
APT policy: (500, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 4.9.0-1-amd64 (SMP w/8 CPU cores)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages kwin-x11 depends on:
ii kwin-common 4:5.8.2-1+b1
ii libc6 2.24-9
ii libepoxy0 1.3.1-2
ii libgcc1 1:6.3.0-5
ii libkf5configcore5 5.28.0-1
ii libkf5coreaddons5 5.28.0-1
ii libkf5crash5 5.28.0-1
ii libkf5i18n5 5.28.0-1
ii libkf5windowsystem5 5.28.0-1
ii libkwinglutils9 4:5.8.2-1+b1
ii libkwinxrenderutils9 4:5.8.2-1+b1
ii libqt5core5a 5.7.1+dfsg-3+b1
ii libqt5gui5 5.7.1+dfsg-3+b1
ii libqt5widgets5 5.7.1+dfsg-3+b1
ii libqt5x11extras5 5.7.1~20161021-2
ii libstdc++6 6.3.0-5
ii libx11-6 2:1.6.4-3
ii libxcb-cursor0 0.1.1-3
ii libxcb-randr0 1.12-1
ii libxcb-xfixes0 1.12-1
ii libxcb1 1.12-1
ii libxi6 2:1.7.9-1
kwin-x11 recommends no packages.
kwin-x11 suggests no packages.
-- no debconf information
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