[nouveau] Nux/Unity 7 panels appear as brightly coloured gradients under XMir with nouveau

[Thomas Voß]

Glitches are visible in this video: http://www.youtube.com/watch?v=twrWVEBih_E&feature=share

Configuration:

Pentium IV
1.5 GB RAM
Nvidia 6200 Graphic Card

[Daniel van Vugt (vanvugt)]

Looks like the nouveau of old. Hopefully it's Mir's fault but we don't know yet.

Do you have other cards you can test on the same machine? AMD? Intel integrated?

[Daniel van Vugt (vanvugt)]

Also, do you get this issue with nouveau?... --> bug 1195811

[Daniel van Vugt (vanvugt)]

Looking at the video again, it looks like a Nux issue drawing the Unity surfaces. I've seen many a driver-related bug (usually with Nvidia/nouveau) cause these kinds of artefacts with Unity. And in the past the solution has always been either:
  (a) Fix Nux/Unity to follow GL specs more closely; or
  (b) Upgrade the driver.

[Daniel van Vugt (vanvugt)]

Still get the issue? I'm pretty sure it is/was Nux/Unity.

[Daniel van Vugt (vanvugt)]

Reopened, confirmed by a duplicate that just came in.

[Daniel van Vugt (vanvugt)]

Mir is responsible for the screen as a whole. So if only part of it is wrong, it's not Mir.

We have however done XMir-specific work in the nouveau DDX to support XMir so that's a good candidate.

[Niko Wicaksono (wicaksono)]

I also got this on my machine with amd 6330 mobile

[Maarten Lankhorst (mlankhorst)]

can't remember when, but I've hit this bug before, probably a shader issue and it has been fixed in nouveau for a while now.