Bug 364720

Summary: QPainter backend does not redraw properly
Product: [Plasma] kwin Reporter: Fabian Vogt <fabian>
Component: platform-fbdevAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED DUPLICATE    
Severity: normal CC: bluescreenavenger, lbeltrame
Priority: NOR    
Version: git master   
Target Milestone: ---   
Platform: Other   
OS: Linux   
URL: http://susepaste.org/view/raw/52367542
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description Fabian Vogt 2016-06-24 19:45:06 UTC 
When starting KWin like:

KWIN_COMPOSE=Q kwin_wayland --framebuffer [...]

redrawing does not work properly. The mouse cursor for example does not get cleared and sometimes the cursor is not visible at all until triggering a redraw.

This diff I found (for RebeccaBlackOS) suggests that they had the same issue: https://github.com/n3rdopolis/rebeccablackos/blob/master/rebeccablackos_files/usr/share/RBOS_PATCHES/kwin.diff

Reproducible: Always
Comment 1 Martin Flöser 2016-06-25 08:13:57 UTC 
How about the DRM backend? Is it showing the same problems as framebuffer?
Comment 2 Fabian Vogt 2016-06-25 10:50:24 UTC 
The DRM backend works fine on my Laptop but is currently broken on QEmu (segfault, bug 364740) so I couldn't test it with the same setup yet.
Comment 3 Martin Flöser 2016-06-25 11:30:33 UTC 
ok, that sounds then like it's a problem in the framebuffer platform.
Comment 4 bluescreenavenger 2016-06-26 13:56:08 UTC 
https://bugs.kde.org/show_bug.cgi?id=356328
Comment 5 Martin Flöser 2016-06-27 06:06:51 UTC 
*** This bug has been marked as a duplicate of bug 356328 ***