Re: drm/nouveau E[ DRM] fail ttm_validate

From: Kees Bakker
Date: Fri Jan 04 2013 - 16:39:59 EST

On 04-01-13 18:49, Marcin Slusarz wrote:
On Fri, Jan 04, 2013 at 01:21:14PM +0100, Kees Bakker wrote:

Right after I upgraded to Ubuntu quantal I started seeing these
Jan 4 12:18:12 koli kernel: [ 3705.970720] nouveau E[ DRM] fail ttm_validate
Jan 4 12:18:12 koli kernel: [ 3705.970726] nouveau E[ DRM] validate vram_list
Jan 4 12:18:12 koli kernel: [ 3705.970760] nouveau E[ DRM] validate: -12
This is userspace bug. See below.

A few times I had corrupted graphics, and I had to stop X. Restarting didn't
help and I had to reboot.

I'm running my own 3.7.1 kernel, so I also installed the 3.7.0 development kernel
from Ubuntu (3.7.0-7). And that kernel shows these messages too.

With the Ubuntu kernel the graphics corruption is milder. I can continue to work. Sometimes
I get a burst of the messages, but I have no clue how it is triggered.

Now the strange thing is that I was running my 3.7.1 kernel on Ubuntu precise
and I have never seen these messages before. What could be the case is that
xorg is doing something new and that is causing the errors.

precise 1:1.0.2-0ubuntu3
quantal 1:0.0.16+git20111201+b5534a1-1build2
(Please do not use distro codenames when reporting bugs upstream)

Quantal, being newer release than Precise, ships much older Nouveau DDX, WTF?
You used some PPA with Precise?
Sorry about that. That was a typo. I meant to say:
quantal 1:1.0.2-0ubuntu3
precise 1:0.0.16+git20111201+b5534a1-1build2

0.0.16 is known to behave like that - you need to upgrade to >= 1.0.

In other words, I have >= 1.0. But you suggest that it shouldn't
happen with >= 1.0
Should I report it on the nouveau list at ?

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