https://bugs.kde.org/show_bug.cgi?id=431446
Colin Griffith <tyna...@gmail.com> changed:
What |Removed |Added
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CC| |tyna...@gmail.com
--- Comment #21 from Colin Griffith <tyna...@gmail.com> ---
I have this exact same issue (on an AMD card though; see bottom for details),
and have to press Alt+Shift+F12 twice (toggle compositing; once to turn off,
once to turn on) every few hours. It seems to sometimes happen around the time
I get a notification, and I know for a fact that this correlates because I'll
be playing a game with the game's window in the top left corner of my monitor
and everything will be fine, but then a notification appears and instantly
causes the game to freeze as the Plasma notification popup slides into view.
As it slides into view it leaves a 'trail' of itself across the window behind
it, usually some other program like Firefox that I have running behind the
game's window. The window the trail appears on is otherwise frozen, I believe,
but I have not explicitly tested for that. I just know that the game does
appear frozen, and the freezing occurs exactly at the same instant that the
plasma popup for the notification starts sliding into view.
Audio in the game still runs, and I can pause and hear the game pause, and see
the game's current state once I've toggled compositing. I could leave
compositing off and that probably fixes it, but then Firefox has a weird black
box around the autoscroll marker when I middle-click auto scroll in it, and
other weird little graphical bugs that annoy me.
Sometimes the first indication that something like this has happened is that
I'll go to switch windows, but I'll notice that hovering over taskbar entries
doesn't change the color or lightness of the taskbar entry in question, and
then things start to flicker when the preview popup tries to materialize.
The big difference, however, is that I am NOT on an Intel GPU. I have an AMD R9
290X, and use the AMDGPU driver (rather than the radeonsi driver). It's still a
Mesa driver, but it'd be more similar to Intel's Iris driver as both it and
AMDGPU use the Gallium framework.
If it matters, I have two monitors and have both calibrated using a
colorimeter, with KDE loading the calibration at start. I also use X11 (since
display calibration doesn't work under Wayland yet).
I'm using KDE Neon and have all packages fully up-to-date. Issues like this
have been happening for a long time, though; at first it only happened around
semitransparent windows (usually plasma widgets that pop over other windows,
like the various application launcher menus and notifications), but then
started happening more often and with more and more window types.
There are various key differences though, and I'm actually thinking it's more
likely that these earlier occurrences around semi-transparent windows is a
separate bug that was fixed, and coincidentally a more severe but
similar-appearing bug appeared after the fix for the other one.
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