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graysky

When I run kodi-gbm, the GUI initially starts out smooth (menu animations, changing screens, etc), but after I play a video and return to the GUI, it is no longer smooth. I see choppiness and visual artifact on over parts that are moving/animated. I did not experience this when running kodi-x11. Is there a setting to tweak to restore the smooth GUI with kodi-gbm?

Here is a debug log.

**sarbes** · 2023-01-23, 15:39

Can you provide screenshots?

graysky · 2023-01-23, 15:49

Yes, I am hosting a short video clip showing the effect here. I did find this dirty regions page, but could not start kodi-gbm with a value of 2 (recommended from wiki) or a value of 1. Only a value of 3 and that caused the GUI resolution to get all messed up.

**sarbes** · 2023-01-23, 17:22

Odd. Can you build with https://github.com/xbmc/xbmc/pull/22012 and test again? I don't have high hopes, but it's worth a try.

graysky

That made it much worse Big Grin

It's easily 2x or 4x as choppy now. Confirmed building with gl or gles.

graysky · 2023-01-23, 18:10

Here is a short movie showing the effect with that patch applied.

thxwein · 2023-01-23, 19:49

Hi, i had the same problem with the "gles" build. I solved that by installing mesa 22.2.4. With the newer 22.3.1 series I had the exact same problem as you. I am on arch linux here.
Now i had the new 22.3.1 and newer installed and got it only working with the "gl" build.

best regards

graysky · 2023-01-23, 20:38

Thanks, this is also an Arch box. I am running it in 4k/60 Hz. Was that your resolution as well? I ask because I cannot reproduce the behavior on another monitor at a lower resolution.

thxwein · 2023-01-23, 22:28

Yes I am also on Tv with 4K/60Hz

**sarbes** · 2023-01-23, 23:05

Is there a bug report for Mesa? Do you have more info?

graysky

I can confirm this bug on a 3rd system but only when it is running in 2160p. Dropping down to 1440p or 1080p is fluid.

EDIT: @sarbes - Yes! https://gitlab.freedesktop.org/mesa/mesa/-/issues/7977 and https://github.com/LibreELEC/LibreELEC.tv/issues/7299

passing that variable to my systemd service fixes the issue:

Code:
% cat /etc/conf.d/kodi-standalone 

# Define environment variables to pass to the service below

mesa_glthread=false

graysky · 2023-02-26, 13:14

And to update, the problem has been fixed upstream with the release of mesa 22.3.5

**popcornmix** · 2023-03-17, 15:23

(2023-02-26, 13:14)graysky Wrote: And to update, the problem has been fixed upstream with the release of mesa 22.3.5

I'm curious to know, does https://github.com/xbmc/xbmc/pull/22012 still have an issue now you have the mesa fix?

graysky · 2023-03-17, 22:35

(2023-03-17, 15:23)popcornmix Wrote: I'm curious to know, does https://github.com/xbmc/xbmc/pull/22012 still have an issue now you have the mesa fix?

No issues patching Nexus with 22012 now. (Mesa 22.3.6 on the system).

graysky · 2023-08-06, 17:00

The bug was reintroduced with the release of 23.1.0, see: https://gitlab.freedesktop.org/mesa/mesa/-/issues/9115