Bug 413675

Summary: window transparency does not work
Product: [Plasma] kwin Reporter: Elmar Stellnberger (AT/K) <estellnb>
Component: coreAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED WORKSFORME    
Severity: normal    
Priority: NOR    
Version First Reported In: 5.15.4   
Target Milestone: ---   
Platform: Other   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Elmar Stellnberger (AT/K) 2019-10-31 15:08:08 UTC
I have set window transparency to be changed by scrolling with the wheel on the title bar (as always) but that takes no effect. xdpyinfo shows RENDER, Composite, GLX and DRI2 to be enabled. The output module for the compositor is set to OpenGL 2.0 in window settings.
Comment 1 Christoph Feck 2019-11-11 11:33:47 UTC
Works here (KWin/X11 on current Tumbleweed). Could you please add the outpuf of

qdbus org.kde.KWin /KWin supportInformation
Comment 2 Elmar Stellnberger (AT/K) 2019-11-11 11:37:45 UTC
I think the problem was that I selected GLX for rendering but the graphics card driver does not support it. I believe it should work with XRENDER on that machine. There are quite severe problems with Xorg when running KDE: https://bugs.freedesktop.org/show_bug.cgi?id=112185. You can use XRENDER but it will still crash the machine on the logout dialogue.
Comment 3 Vlad Zahorodnii 2019-11-18 12:55:02 UTC
(In reply to Elmar Stellnberger (AT/K) from comment #2)
> I think the problem was that I selected GLX for rendering but the graphics
> card driver does not support it. I believe it should work with XRENDER on
> that machine.
Please switch to OpenGL render backend and post output of
    qdbus org.kde.KWin /KWin supportInformation
Comment 4 Bug Janitor Service 2019-12-03 04:33:09 UTC
Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least
15 days. Please provide the requested information as soon as
possible and set the bug status as REPORTED. Due to regular bug
tracker maintenance, if the bug is still in NEEDSINFO status with
no change in 30 days the bug will be closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

If you have already provided the requested information, please
mark the bug as REPORTED so that the KDE team knows that the bug is
ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!
Comment 5 Bug Janitor Service 2019-12-18 04:33:12 UTC
This bug has been in NEEDSINFO status with no change for at least
30 days. The bug is now closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

Thank you for helping us make KDE software even better for everyone!