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#1 2022-07-10 12:31:09

midgard
Member
Registered: 2022-07-10
Posts: 8

Can't enable secondary monitor in KDE Plasma system settings.

I'm using the proprietary NVIDIA driver with a GTX 1650 on a Lenovo laptop.  I have a 1080p Samsung monitor plugged in via HDMI into my laptop.

System settings recognizes the monitor, but I can't enable it. When selecting the "Enable" checkmark and clicking "Apply" I get the following error in the terminal:

kf.coreaddons: "Could not load plugin from kcm_kscreen: The shared library was not found."

And nothing happens with the monitor.

How can I enable the second monitor and fix this issue? Thanks.

xrandr output here

lspci output here

Last edited by midgard (2022-07-10 12:33:45)

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#2 2022-08-09 20:22:17

4romany
Member
Registered: 2021-11-27
Posts: 25

Re: Can't enable secondary monitor in KDE Plasma system settings.

I'm running KDE and as soon as I bring up the "display configuration" screen I see that exact error.  I thought that was the issue I was having on my laptop + external monitor setup - making the external monitor primary never survived a reboot.   But I just re-installed Arch from scratch - my previous issue with making the external monitor primary past a reboot is no longer a problem.   But I still see that same exact error (kf.coreaddons) when I go into the display configuration screen - but as far as I can tell its not an issue.  Certainly not the issue I was having.   Not sure this helps you or anyone else but wanted to throw it out there...

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#3 2022-08-09 22:16:26

seth
Member
Registered: 2012-09-03
Posts: 50,012

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#4 2022-08-10 00:37:54

4romany
Member
Registered: 2021-11-27
Posts: 25

Re: Can't enable secondary monitor in KDE Plasma system settings.

Seth, I already had the latest kscreen installed...

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#5 2022-08-10 05:39:23

seth
Member
Registered: 2012-09-03
Posts: 50,012

Re: Can't enable secondary monitor in KDE Plasma system settings.

It is what provides kcm_kscreen so if that error message implies that it's kcm_kscreen that cannot load a further plugin, there's probably some context?
There's https://bbs.archlinux.org/viewtopic.php?id=277442 so this seems common and because of https://ubuntuforums.org/showthread.php?t=2469684 unlikely to be "downstream" (quelle surprise…)

If there's no context, we can create some:

strace -f kcmshell5 kcm_kscreen > /tmp/kscreen.strace 2>&1

Upload that file (1st link below)

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