https://bugs.kde.org/show_bug.cgi?id=357009
Bug ID: 357009
Summary: Partial image freeze when changing display
configuration
Product: kwin
Version: 5.5.1
Platform: Archlinux Packages
OS: Linux
Status: UNCONFIRMED
Severity: major
Priority: NOR
Component: xrandr
Assignee: kwin-bugs-n...@kde.org
Reporter: maxim.starga...@gmail.com
On display attachment, when display configuration on laptop is changed, image
of window open on the laptop display is frozen, although mouse pointer remain
responsive and can move over it. Desktop on the attached monitor is fine in the
same time.
Restarting kwin (kwin_x11 --replace) helps, as well as disconnecting external
monitor - after configuration automatically falls back to initial single
display config.
Solution with restarting kwin works but seems to live xserver(?) in the strange
fragile state, which produce occasional image blinking and after some time
(hours of work) leads to xserver crashing.
Problem only observed with compositing turned on.
Issue was not there on the v. 5.4.3 and showed itself after upgrade to 5.5.0.
I am observing problem with xserver 1.18.0, although I am not absolutely shure
it was not there when I was using (for a quite short period of time) xorg
1.18.0 & kwin 5.4.3
No useful output is observed in system logs when problem occurs.
Reproducible: Always
Steps to Reproduce:
1. Connect external monitor (tested with vga connection only)
2. Observe the problem
3.
1-st gen. Core Intel video.
KWin Support Information: http://pastebin.com/tPiqxjhV
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