Package: kwin-x11 Version: 4:5.8.6-1 Severity: important Forwarded: https://bugs.kde.org/show_bug.cgi?id=343661
Hi, after some time my kde session stops redrawing some windows. I see this mostly in konsole and firefox (which are the majority of my long-running open windows). Clicking and typing is still working, but updates causes by this are only seen after forcing a redraw by e.g. minimizing+unminimizing, switching to another tab and back in konsole, ... Sometimes a firefox window also becomes completely black (but title and border are still OK), which can be fixed by minimizing and unminimizing. This time it took 4 days since the last reboot and X session start for the problem to show up for the first time. The workaround from the corresponding upstream bug is KWIN_EXPLICIT_SYNC=0 kwin_x11 --replace & This is working, but not a permanent fix, it may need to be repeated after some days since the problem reappears from time to time (within the same X session). I haven't played with any compositing options since I upgraded to stretch, not sure if I changed something in wheezy or jessie. Andreas -- System Information: Debian Release: 9.2 APT prefers stable-updates APT policy: (800, 'stable-updates'), (800, 'stable'), (700, 'testing'), (600, 'unstable'), (500, 'unstable-debug'), (500, 'testing-debug'), (500, 'stable-debug'), (500, 'oldstable-updates'), (500, 'oldstable-proposed-updates'), (500, 'oldoldstable-updates'), (500, 'oldoldstable-proposed-updates'), (500, 'oldoldstable'), (500, 'oldstable') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 4.9.0-4-amd64 (SMP w/8 CPU cores) Locale: LANG=C, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE= (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: sysvinit (via /sbin/init)