Comment 15 for bug 1963805

This may be causing really weird issues I've seen since upgrading to 22.04.

I'm rocking an RTX 3060 ti (desktop GPU, as this is a desktop, not a laptop).

I have 3x monitors, all in landscape. Left and Right are 1920x1080@60hz, Middle is 2560x1440@165hz.

I have sync for all set to sync to the Middle monitor, so running at 165hz (so much smoother).

But since upgrading to 22.04 I've been having an issue that shows up after a seemingly random period of time. Typically days. And I don't yet know if it's related to modesetting, since I just followed the above steps to disable it, and it will be some time to know if it had any effect.

The problem is I'll be just working on one of my monitors (any of them) and that monitor suddenly stops updating the framebuffer, and it's just frozen displaying the single frame.

I can "behind the scenes" drag windows in and out of that monitor, but it never updates the image.

If I try to gracefully reboot with a sudo reboot, or other method, the computer hard-locks and never finishes shutting down or rebooting. And it ceases responding to any further input.

In this scenario the only solution is either a hard-reset button press, or hold power button down and force it off.

I've tried switching between nVidia drivers 530, 525, and 515. No change there.

I'm now back on 530 (all of these are nVidia proprietary blob drivers btw), and commented out the modeset aspect, as defined above, then rebooted. We'll see if that has any effect, but again, likely days before I'll even know or not.

And boy does this issue have like nobody talking about it online.

Additionally, there doesn't seem to be ANY errors output to logs at the time, no dmesg. And the closest thing most recently is the "Failed to grab modeset ownership" log entries, which I did get in my most recent example of this monitor freezing stuff. So it's hard to tell if it's related, or unrelated.

Quite frankly it's 2023, how has nVidia not sorted out modesetting yet?!??!

Here's hoping this solved it for me. Sorry I can't be of more help, but wanted to put something up that could be Google/Search Engine indexed, and maybe help someone in the process (sometimes it even helps me again, heh).