Display returning irregular (or not at all) after screen turns off

On a fresh install of Manjaro 24, when my monitor turns off, either by timing out according to the Power Management settings “Turn off screen” timeout, or by physically powering down the screen, the screen does not come back properly. I tried both X11 and Wayland to different effects:

  • On X11 it comes back in 640x480 resolution with no way to change the resolution back.
  • On Wayland it stays blank and the monitor does not recognize any input (the monitor stays in sleep mode).

Otherwise everything runs fine as long as the monitor doesn’t power off or go to sleep. I have to restart the system to get it back, and it comes back just fine.

The system is still running fine, as I am able to SSH into it, and the GPU is still attached and recognized. I tried following the Configure Graphics wiki and running the mhwd commands to no avail. I think it may be related to kernel 6.12, as my old Manjaro installation (on Kernel 6.6) had no issues with this.

What can I do to suss this out? Any next steps?

Notes: I am running a fresh install of Manjaro 24 being run as a VM on Unraid. I installed the proprietary NVidia drivers via the Manjaro Settings Manager. Details below:

  • Operating System: Manjaro Linux
  • KDE Plasma Version: 6.3.4
  • KDE Frameworks Version: 6.12.0
  • Qt Version: 6.9.0
  • Kernel Version: 6.12.21-4-MANJARO (64-bit)
  • Graphics Platform: Wayland
  • Processors: 16 × AMD Ryzen 9 5950X 16-Core Processor
  • Memory: 31.3 GiB of RAM
  • Graphics Processor: NVIDIA GeForce RTX 3080 Ti
  • Manufacturer: QEMU
  • Product Name: Standard PC (i440FX + PIIX, 1996)
  • System Version: pc-i440fx-9.1
1 Like

This is one of the known problems with the combination of Plasma and Nvidia, which is supposedly fixed in Plasma 6.3.5. :point_down:

3 Likes

Thank you! I hope that’s it. BTW, The text was correct but the link was wrong, it’s this:

Fixed a glitch affecting people with NVIDIA GPUs that could make the lock screen go black or flicker under certain circumstances. (Xaver Hugl, link)
From This Week in Plasma: The beginnings of Wayland session restore - KDE Blogs

And pardon my ignorance: Is it this extra/plasma-desktop package? I see it’s on 6.3.4-1. I assume the recommendation is for me to wait until that gets updated so I don’t do something to it…

Strictly speaking, yes, but you should always update your entire system, and not exclude any packages from updating.

There was another Stable Update today — see the Stable Updates thread — and today we Plasma users upgraded to Plasma 6.3.4.

The update also included an update to qt, among other things. So it’s imperative that you would update your whole system. Below are some tips for doing it as safely as possible. :point_down:

I would also advise emptying ~/.cache/ from the tty before updating, and while completely logged out of Plasma.

@glitteryio

When providing system information for Support purposes it’s best to ask your system directly for the required information;

Regards.


System Information

Output of this command (formatted according to forum requirements) may be useful for those wishing to help:

inxi --filter --verbosity=8

or the short form:

inxi -zv8

Be prepared to provide more information and outputs from other commands whenever asked. It’s equally important to provide as much actionable information as possible in your first post, rather than simply indicating there is a problem.

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