[plasmashell] [Bug 523988] Display remains stuck on dimmed gamma/DPMS state after sleep due to Wayland socket disconnect in PowerDevil

https://bugs.kde.org/show_bug.cgi?id=523988

--- Comment #2 from [email protected] ---
(In reply to Nate Graham from comment #1)
> This typically means KWin crashed. Is there a kwin_wayland backtrace in the
No kwin doesn't crash but maybe this showed up after my workaround which is
basically killing kwin_wayland and replacing it (restarting it) . I run this to
fix the bug:  "kwin_wayland --replace > /dev/null 2>&1 & "

> output of `coredumpctl --reverse`?
I just recreated the bug and it doesn't show anything related ( I only have 2
entries from FreeFileSync)

> Also: how many screens do you have, how are they connected, and what are they?
I have 2 monitors,  Asus VG27AQ3A plugged with DP port and HP L1908w plugged
with a HDMI to VGA.

I even tried "ddcutil setvcp 10 100 --display 1 --sleep-multiplier .5" instead
of restarting kwin_wayland but it didnt work. Both monitors stay in dimmed
state, restarting the powerDevil service doesnt do  anything too. The only
consistent workaround I found is restarting kwin_wayland.

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