| Summary: | External monitors connected to dGPU (NVIDIA) no longer working after upgrading to kde-plasma/plasma-meta-5.27.4 | ||
|---|---|---|---|
| Product: | [Plasma] plasmashell | Reporter: | Niels <nvaert1986> |
| Component: | general | Assignee: | Plasma Bugs List <plasma-bugs> |
| Status: | RESOLVED WORKSFORME | ||
| Severity: | normal | CC: | kde, nate |
| Priority: | NOR | ||
| Version: | 5.27.4 | ||
| Target Milestone: | 1.0 | ||
| Platform: | Gentoo Packages | ||
| OS: | Linux | ||
| Latest Commit: | Version Fixed In: | ||
| Sentry Crash Report: | |||
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Description
Niels
2023-04-24 13:44:24 UTC
Additional information: Running gentoo-sources-6.1.23 Running nvidia-drivers-530.41.03 (tried 525.xx.xx series too) Can you define what "stopped working" means in this context 1. Doesn't get power 2. Gets power, but can't be turned on 3. Can be turned on, but displays no image 4. Displays 4. Displays an "image" that's just all black, but you can at least move your cursor onto the screen and it shows up 5. Something else ? 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. Sorry this happened. In Plasma 5.27 we implemented a new system for mapping Plasma desktops and panels to screens that is fundamentally more correct by design, and as a result much more robust. We also added code to migrate old settings to this new system. Unfortunately, due to the non-determinism baked into the old system, the migration code works better the simpler your arrangement of screens, desktops, and panels was. For complex arrangements, we've seen a few reports like this. The good news is that this shouldn't recur going forward due to the new system we have in Plasma 5.27. So hopefully this is the last time it should ever happen! |