Arch Linux

Celelste

Member

Registered: 2023-02-05

Posts: 2

Second monitor turns off after login

I am using kde plasma 5.25.5 and after boot my laptop screen is mirrored to my monitor, but after logging in the monitor turns off. i have tried using optimus-manager and have gotten it to successfully switch to the nvidia card, which after some tinkering i got my monitor to work. after disconnecting my laptop from my monitor and reconnecting it this issue popped up. i tried my original fix which no longer seems to work.

xrandr output: https://pastebin.com/dzjN0bM8

i should also note that i am relatively new to arch as a whole

Last edited by Celelste (2023-02-05 22:09:03)

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,076

Re: Second monitor turns off after login

Is your screen even attached to the nvidia card? What's your output of

lspci | grep -E 'VGA|3D'
xrandr --listproviders

if your nvidia card is irrelevant then nothing you will change here will have an effect. General from symptoms whatever you did will initially be overridden by KDE's Kscreen, that is known to occasionally have some issues with monitor config detection/adjustment though betterment should be coming with the next plasma release. In any case, try to configure your screens in kscreen in KDEs systemsettings which is what will try to handle the screen. If you can't fix it there no matter what you do, you could also disable kscreen entirely by disabling the daemon in

kcmshell5 kcm_kded

Celelste

Member

Registered: 2023-02-05

Posts: 2

Re: Second monitor turns off after login

disabling kscreen did the trick!, for future reference the outputs of the top two commands confirmed that my gpu was in use, connected etc. thx