[kde] [Bug 468904] External monitors connected to dGPU (NVIDIA) no longer working after upgrading to kde-plasma/plasma-meta-5.27.4
Niels
bugzilla_noreply at kde.org
Tue Apr 25 10:41:59 BST 2023
https://bugs.kde.org/show_bug.cgi?id=468904
Niels <nvaert1986 at hotmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEEDSINFO |RESOLVED
Resolution|WAITINGFORINFO |WORKSFORME
--- Comment #4 from Niels <nvaert1986 at hotmail.com> ---
I'm running X11 and xrandr showed both of the providers and all 3 the monitors,
but KDE did not see them in the configuration pane. There it only showed 1
monitor (they were blinking in stand-by).
The output was:
xrandr --listproviders
Providers: number : 2
Provider 0: id: 0x47 cap: 0xf, Source Output, Sink Output, Source Offload, Sink
Offload crtcs: 3 outputs: 6 associated providers: 1 name:modesetting
Provider 1: id: 0x2a1 cap: 0x2, Sink Output crtcs: 4 outputs: 7 associated
providers: 1 name:NVIDIA-G0
xrandr --listmonitors
Monitors: 3
0: +*DP-1-1.2 1920/518x1200/324+1920+0 DP-1-1.2
1: +eDP-1 1920/344x1080/193+0+60 eDP-1
2: +DP-1-1.3 1920/518x1200/324+3839+0 DP-1-1.3
I've been able to resolve the issue, by resetting my entire KDE configuration,
running the commands below (after entering a new session) and rebooting:
xrandr --setprovideroutputsource NVIDIA-G0 modesetting
xrandr --auto
The issue has been resolved for now, but seems like an issue during upgrade,
where wiping the KDE configuration resolves the issue.
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