Video signal is sometime lost when using VRR

[thesword53]

NVIDIA Open GPU Kernel Modules Version

575.64.05

Please confirm this issue does not happen with the proprietary driver (of the same version). This issue tracker is only for bugs specific to the open kernel driver.

• I confirm that this does not happen with the proprietary driver package.

Operating System and Version

Arch Linux

Kernel Release

6.15.9-arch1-1

Please confirm you are running a stable release kernel (e.g. not a -rc). We do not accept bug reports for unreleased kernels.

• I am running on a stable kernel release.

Hardware: GPU

GeForce RTX 2080 SUPER

Describe the bug

When using VRR with the Alienware AW2725DF (2560x1440 360Hz DisplayPort) monitor and the frame rate is low, the monitor sometime looses video signal. I have to disable VRR by closing or unfocusing the game/app to get video signal back. If VRR is switch from on to off, the screen will briefly looses signal. The issue doesn’t happen with my 2 other screens (144Hz and 75Hz).

To Reproduce

• Set the monitor to 360Hz.
• Launch vrrtest and close it.
  In KDE Plasma display settings set Adaptive Sync to "Always" and wait.

nvidia-bug-report.log.gz

Bug Incidence

Sometimes

nvidia-bug-report.log.gz

nvidia-bug-report.log.gz

More Info

This issue can happens in games if the framerate goes below the monitor minimum refresh rate (48Hz) with both KDE and Gnome Wayland.

Monitor EDID: aw2725df_edid.gz
This issue also happens with the latest 580.65.06 driver.

[Binary-Eater]

Thanks @thesword53 for both the log and the EDID. Reading the monitor mode timings and EDID blocks, I am curious about one thing if its fast for you to run.

If you enable VRR (AdaptiveSync), launch vrrtest, and set the vrrtest fps to 200 fps while fullscreened, do you experience monitor blanking?

[thesword53]

If you enable VRR (AdaptiveSync), launch vrrtest, and set the vrrtest fps to 200 fps while fullscreened, do you experience monitor blanking?

No.

This happens when I toggle fullscreen from on to off or when I quit vrrtest when fullscreen is on. Both Xorg and Wayland are affected.
Here is a video showing the issue:
https://global.discourse-cdn.com/nvidia/original/4X/2/e/2/2e2f68ba6fe584b0c06546a45de0fc54b8c47973.mp4