Character corruption with 2.6.37

Character corruption with 2.6.37

[Tino Keitel]

Hi,

I see character corruption in X with 2.6.37, libdrm 2.4.21 and 2.4.23,
intel-xorg 2.13 and Xserver 1.7.7 (Debian Sid). In the kernel, I see
such log entries:

[drm:i915_gem_object_unbind] *ERROR* Attempting to unbind pinned buffer

Xorg.0.log looks like this:

(WW) intel(0): intel_uxa_prepare_access: bo map failed: Invalid argument
(EE) intel(0): Failed to submit batch buffer, expect rendering
corruption or even a frozen display: Invalid argument.

This happens on a Mac mini Core Duo with i945 graphics.

Any hints how to fix this? I tested some 2.6.37-rc kernels (rc3 to rc8)
without having this issue. So it might be some upgrade of another
component. I downgraded libdrm2 from 2.4.23 to 2.4.21, and restarted
the X server, but it didn't help.

Regards,
Tino

Re: Character corruption with 2.6.37

[Tino Keitel]

On Wed, Jan 19, 2011 at 09:57:00 +0100, Tino Keitel wrote:
> Hi,
> 
> I see character corruption in X with 2.6.37, libdrm 2.4.21 and 2.4.23,
> intel-xorg 2.13 and Xserver 1.7.7 (Debian Sid). In the kernel, I see
> such log entries:
> 
> [drm:i915_gem_object_unbind] *ERROR* Attempting to unbind pinned buffer
> 
> Xorg.0.log looks like this:
> 
> (WW) intel(0): intel_uxa_prepare_access: bo map failed: Invalid argument
> (EE) intel(0): Failed to submit batch buffer, expect rendering
> corruption or even a frozen display: Invalid argument.
> 
> This happens on a Mac mini Core Duo with i945 graphics.

Addition: I not only saw character corruption. Web browsers (tried
Firefox and Midori (webkit-based) show rendering errors at some point,
up to a completely garbled tab window.

Regards,
Tino

Re: Character corruption with 2.6.37

[Niccolò Belli]

Il 19/01/2011 09:57, Tino Keitel ha scritto:
> I see character corruption in X with 2.6.37

Same problem here with GMA45, 2.6.37 and latest graphic stack snapshot.
There is no error in dmesg, but I see corruption in the title bars.

Darkbasic