https://bugs.kde.org/show_bug.cgi?id=446936
Bug ID: 446936
Summary: git master - Cursor appears dark/corrupted with RDNA2
gpu under Wayland
Product: kwin
Version: git master
Platform: Compiled Sources
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: core
Assignee: kwin-bugs-n...@kde.org
Reporter: jonv...@outlook.com
Target Milestone: ---
SUMMARY
Running the latest git master build of Plasma Wayland on a Radeon 6700XT, the
cursor appears darker than it should be. Sort of a "corrupted" state. I believe
this is related to the gamma changes in MR
https://invent.kde.org/plasma/kwin/-/merge_requests/1335 - using the full gamma
ramp from the kernel driver causes an issue with the coloring of the cursor.
This happens under X11 as well, and not just with Plasma. Under X11, the issue
can be mitigated by using the modesetting driver and disabling the UseGammaLUT
option.
It looks like this is an issue with amdgpu, there has been an open issue over
for quite a while:
https://gitlab.freedesktop.org/drm/amd/-/issues/1513
I would grab a screenshot, but it doesn't show up well. The best example is in
the issue above.
Submitting this for awareness and tracking.
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
Kernel Version: 5.15.7-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 5800X 8-Core Processor
Memory: 15.6 GiB of RAM
Graphics Processor: AMD Radeon RX 6700 XT
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