https://bugs.kde.org/show_bug.cgi?id=494577
Jakob Petsovits <jpe...@petsovits.com> changed:
What |Removed |Added
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CC| |jpe...@petsovits.com
Status|REPORTED |NEEDSINFO
Resolution|--- |WAITINGFORINFO
--- Comment #10 from Jakob Petsovits <jpe...@petsovits.com> ---
That's a lot of confirmations. I wonder if you are all hitting the same issue,
or if they are slightly different.
The original bug report mentions that the brightness slider doesn't work as
expected anymore, "the monitor doesn't brighten beyond the dimmed value". This
would happen if hardware brightness controls are lost and KWin on Wayland uses
software brightness instead. There was a change that went into Plasma 6.2.3,
which will make sure that the slider disappears instead of now confusingly
controlling software brightness:
https://invent.kde.org/plasma/kwin/-/merge_requests/6670. But this does not fix
the underlying issue that Plasma gave up on hardware brightness controls.
There was another change that went into 6.2.1, which will retry any monitor
commands several times (spaced out over a few seconds) before giving up on
hardware brightness:
https://invent.kde.org/plasma/powerdevil/-/merge_requests/441 plus a small
addition for completeness,
https://invent.kde.org/plasma/powerdevil/-/merge_requests/445.
The initial bug report was reported against Plasma 6.2.0 - could I ask for
confirmation from the OP (hossains...@proton.me) to report if this is still
failing for you?
Other comments are mentioning that non-dimmed brightness needs to be restored
by adjusting the slider in the brightness applet. This indicates that hardware
brightness controls are generally working, so the root cause would be different
from the originally reported issue. I improved the dimming code somewhat in
Plasma 6.2.1 by restoring brightness values for each display individually:
https://invent.kde.org/plasma/powerdevil/-/merge_requests/433. However, this
isn't yet good enough if a dimmed monitor was unplugged and only comes back
later. We need to further improve robustness for un-dimming monitors. Also see:
https://invent.kde.org/plasma/powerdevil/-/issues/38
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