https://bugs.kde.org/show_bug.cgi?id=423014
Bug ID: 423014
Summary: kwin_x11/intel black screen with Depth 30 and
compositing
Product: kwin
Version: 5.19.0
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: compositing
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
SUMMARY
When kwin_x11 starts on an Xorg screen with a 30bpp visual, the screen is
totally black except for the cursor. The window manager is working normally,
and it's still possible to toggle compositing on and off with alt-shift-F12.
STEPS TO REPRODUCE
1. Get a laptop with Intel gpu (I used a i7-10710U, which has CML GT2)
2. Set X11 to 30bpp by dropping this config snippet to
/etc/X11/xorg.conf.d/10-depth.conf:
Section "Screen"
Identifier "default"
DefaultDepth 30
EndSection
3. Login!
OBSERVED RESULT
black screen
EXPECTED RESULT
A Plasma Desktop in its deep color magnificence.
SOFTWARE/OS VERSIONS
KDE Plasma Version: 5.18.5 (also tried with kwinft built from git master)
KDE Frameworks Version: 5.70.0
Qt Version: 5.14.2
mesa: 20.1.1
libdrm: 2.4.100
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