https://bugs.kde.org/show_bug.cgi?id=381934
Bug ID: 381934
Summary: Initiating Kwin Desktop Grid effect freezes screen –
sometimes (AMDGPU/radeon)
Product: kwin
Version: 5.10.3
Platform: Archlinux Packages
OS: Linux
Status: UNCONFIRMED
Severity: normal
Priority: NOR
Component: effects-desktop-grid
Assignee: kwin-bugs-n...@kde.org
Reporter: m...@elbmurf.de
Target Milestone: ---
I'm experiencing this bug for a few years now. Back then with a Radeon HD 7770,
a R9 380 and now a RX 480, all with free drivers (radeon/AMDGPU) on different
motherboards. It's very simple: Sometimes, not every time, but by around 50% of
tries, the screen freezes when I initiate the "Desktop Grid"/"Raster" effect.
Sometimes this doesn't freeze the screen directly but seems to make the WM
somehow 'sick' so it crashes/freezes at a random other effect over the next
half hour. I can only reset the X server, lose work in the process and do a
relogin.
All other effects run fine without crashing Kwin or freezing the screen. I
thought a long time this must be a somehow driver related bug, pointing the
finger at AMD's poor driver quality in the past, but after three years, this is
rather unlikely.
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