https://bugs.kde.org/show_bug.cgi?id=275433
Michael Butash <mich...@butash.net> changed:
What |Removed |Added
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CC| |mich...@butash.net
--- Comment #19 from Michael Butash <mich...@butash.net> ---
I started watching this thread, as I struggle daily with KDE to just maintain
some sanity with a dock/undock scenario with various displays. Multi-monitor
has been dysfunctional since 4.x kde days, and it seems still is.
I use a laptop as my main rig now with a TB3 dock adding 2x 4k displays.
Anytime this changes, KDE simply loses my settings, totally forgets, craps the
bed, crashes compositing, about whatever you can imagine it might do poorly, it
does. Not that most DE's are much better, KDE is particularly confounding.
If I dock, setup display manager for 3x 4k/60hz displays accordingly, I expect
it knows to revert back to that when it sees the dock and displays attached.
Instead it goes bonkers, reverts randomly to who knows what, and tends to just
reset settings in weird ways. Sometimes the dock or DP-to-HDMI adapters reset
to odd resolutions (like 1080p only), which freaks it out even worse, but it's
random how KDE responds to reconfigure the desktop, and usually horribly.
I cannot get KDE to act the same way twice in any scenario
display/resolution-wise. Why it cannot, is beyond me other than bugs or
unexpected behaviour, which for a laptop is not to be unexpected jacking into
random displays extensions.
Even the same setups reset every time, so it's 50 first dates every time I
connect my display. It resets resolution, position, refresh rate, sometimes
randomly mirrors, just all over the place. Even more confounding, my displays
reverse, randomly it disables my main laptop displays, and other things I just
can't rationalize other than being possessed by a spirit of chaos.
The worst thing is when I happen to accidentally power off a display, to bring
it back up, and it starts hiding my windows. Since being TV displays, I use a
remote to power them up/down, and occasionally it shuts off the wrong display.
My TB3 dock can only use 2x of the displays, so my 3rd I use for other things.
If the remote powers down the display, it really freaks KDE out that I simply
cannot use the display. Shutting off the display while connected will cause
KDE/xrandr to reposition things as it sees a temporary change, but even
bringing it back online, if I move a window to that display, it hides it
entirely as though offscreen. This is the freakin' worst, as it is
unresolvable without a hard reboot, even restarting sddm will not resolve.
This is super hard to explain how much grief KDE gives me with multi-monitor.
Compositing in KDE is the worst at full 3x 4k display resolution, even youtube
stttttuddddddders constantly on a fresh reboot to make it almost unusable, but
the compositing itself behaves randomly. KWin crash randomly, which is
apparent immediately, and restarting it from display settings/compositing,
disabling it will enable it, and vise-versa oppositely. Almost every aspect of
display settings from resolution to monitor alignment to compositing is buggy
to control in a predicable fashion.
The KDE display subsystem is just simply dysfunctional. I've tried digging for
significant log events or anything to tip me off to something easily
resolvable, but there is nothing. Xrandr looks good, just KDE can't seem to
manage display settings consistently for whatever reason.
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