Ubuntu
mesa package

On 965G glxgears fails with DRM_I830_CMDBUFFER: -22

Bug #66645 reported by Alex Willmer on 2006-10-17

Affects		Status	Importance	Assigned to	Milestone
	mesa (Debian)	Fix Released	Unknown	debbugs #394311
	mesa (Ubuntu)	Fix Released	Undecided	Unassigned

Bug Description

glxgears and other opengl programs fail as follows:

alex@bertha:~$ glxgears
DRM_I830_CMDBUFFER: -22

This is using latest libdrm, kernel, xorg on an intel x3000/G965 chipset. libgl1-mesa-glx 6.5.1~20060817-0ubuntu3 is installed.

Revision history for this message

Alex Willmer (alex-moreati) wrote on 2006-10-17:

Xorg.log Edit (62.4 KiB, text/plain)

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Alex Willmer (alex-moreati) wrote on 2006-10-17:

dmesg Edit (29.0 KiB, text/plain)

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Alex Willmer (alex-moreati) wrote on 2006-10-17:

glxinfo Edit (5.0 KiB, text/plain)

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Erik Andrén (erik-andren) wrote on 2006-11-12:

I can confirm this bug

Changed in mesa:
status:	Unconfirmed → Confirmed

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Paul Sladen (sladen) wrote on 2006-11-13:

Is this on 6.06LTS, 6.10 or fiesty?

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Erik Andrén (erik-andren) wrote on 2006-11-13:

Both Edgy and Feisty. I haven't tried Dapper.

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Benoit Pruneau (bpruneau) wrote on 2006-12-07:

For information, on Debian, they have already find the trouble:

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=394311

But I don't know how to do that with Ubuntu, I'm a beginner in Linux, with Ubuntu 6.10

Revision history for this message

Paul Sladen (sladen) wrote on 2006-12-07:

IIRC, this was already applied for 6.10.

Bug Watch Updater (bug-watch-updater) on 2006-12-09

Changed in mesa:
status:	Unknown → Unconfirmed

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Peter Cordes (peter-cordes) wrote on 2006-12-14:

It's not fixed in AMD64 Edgy. I had to apt-get source ... to build with -fno-strict-aliasing. That fixed that problem.

Bug Watch Updater (bug-watch-updater) on 2006-12-26

Changed in mesa:
status:	Unconfirmed → Confirmed

Bug Watch Updater (bug-watch-updater) on 2007-01-03

Changed in mesa:
status:	Confirmed → Fix Released

Revision history for this message

Alex Willmer (alex-moreati) wrote on 2007-01-24:

#10

I can confirm this is still not fixed for Feisty. Recompiling mesa 6.5.1~20060817-0ubuntu4 with -fno-strict-aliasing fixed the problem.

Modified configs/debian:

DEBIAN_COMMON_CFLAGS = -ansi -pedantic -Wall -fPIC -std=c99 \
-fno-strict-aliasing

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Sam (sam-rfc1149-deactivatedaccount) wrote on 2007-02-07:

#11

Confirmed as well here. Could someone produce a package with -fno-strict-aliasing added to CFLAGS/CXXFLAGS in configs/debian and configs/debian-static?

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Alex Willmer (alex-moreati) wrote on 2007-02-07:

#12

Patch Edit (725 bytes, text/plain)

I think I've done this right, patch made against current Feisty mesa, fixes the CMDBUFFER error.

A warning is still printed to the console:
libGL warning: 3D driver claims to not support visual 0x5a

This bug seems closely related to latest comments in bugs 62135 & 61951. Following this patch glxgears and ppracer work. Compiz does not, windows appear as blank boxes.

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Alex Willmer (alex-moreati) wrote on 2007-02-11:

#13

I hacked together some custom packages from Debian experimental for libdrm_2.3.0 and mesa_6.5.2. Using these, the "libGL warning: 3D driver claims to not support visual 0x5a" is still reported.

Following installation of these packages and an X server restart desktop-effects half works. Windows draw with a thick black edge surrounding the border, tool tips have a similar white edge. After a short time window contents gradually fail to draw, widgets and icons become blank on hover. Resizing a window restores it's contents.

It would appear there's more to fixing compiz on 965G than upgrading mesa/libdrm.

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Alex Willmer (alex-moreati) wrote on 2007-02-12:

#14

The meaning of the libGL warning can be found on the Gentoo Wiki:
http://gentoo-wiki.com/HARDWARE_Intel_DG965MQMKR#Integrated_Video_Intel_X3000

Visual 0x5a is for 23bit, i810 driver supports only up to 24bit

Revision history for this message

Alex Willmer (alex-moreati) wrote on 2007-02-24:

#15

The upgrade in feisty to mesa 6.5.2 and libdrm 2.3.0 has fully fixed this bug. The visual 0x5a message remains, but isn't relevant.