KDE 5 and dual monitor set-ups

[evoweiss]

Hi all,

I'm running KDE 5 (or whatever they call it) and have had trouble getting the dual monitor configuration to 'stick'. In other words, if I log out or reboot the display settings are reset to something that doesn't work. I have a script that gets xrandr to reset the monitors to be correct, but cannot get this to automatically run. If I use KDE to set it to automatically start, nothing happens, i.e., the problem is the same. I've also putting it in .xprofile, but that doesn't seem to be working either.

The xrandr script is as follows:

[i4dnf]

Systemsettings -> Startup and Shutdown -> Background Services and disable Kscreen2, problem solved. Once setup you shouldn't even need the xrandr workaround.
(caveat: it won't adjust the layout dinamycally anymore when physically [dis]connecting screens, you'll have to adjust it manually from Systemsettings)
_________________
"The only difference between me and a madman is that I am not MAD" (SALVATOR DALI)

[evoweiss]

[i4dnf]

If this is a "static" setup, have you tried doing the necessary configuration in xorg.conf[.d], instead of relying on the xrandr script?
_________________
"The only difference between me and a madman is that I am not MAD" (SALVATOR DALI)

[evoweiss]

[radio_flyer]

I'm currently running three 4K displays in Plasma 5 without issues, using the amdgpu open-source driver.

The kscreen2 service is running. The three monitors are configured side-by-side in landscape ('Normal') orientation using the standard System Settings --> Display and Monitor --> Displays dialog. No xorg.conf or xrandr files needed.

In the past, when I've run into KDE issues with my multi-monitor setups, I've found issues in the following places:

~/.config/plasma-org.kde.plasma.desktop-appletsrc

Look for the 'plugin=org.kde.panel' "containment" (that's what KDE calls it) and make sure lastScreen=0. If not, change it and then "killall plasmashell; kstart plasmashell" to see if that fixes it.

Also, check out the kscreen.log file in:

~/.local/share/kscreen

That directory also contains randomly-named config files for kscreen2. I've had success in the past deleting those when things go wonky and letting kscreen recreate them. Unfortunately, wonky happens more often than not whenever KDE upgrades. And although I haven't had to do it recently, in the past I've occasionally made a kscreen config file read-only after kscreen made a working one in order to get it to stop moving displays around.

[evoweiss]

Hi there,

Thanks for this. Unfortunately, it did not solve the problem, which is the same as ever.

Best,

Alex