[i945] X does not load with UXA enabled because of no dri for virtual > 2048. (UXA bug)

[Stephen Monteith]

Binary package hint: xserver-xorg-video-intel

Enabled UXA, X does not load, get an error message about DRI with framebuffer over 2048. I'll update this with the exact message.

ProblemType: Bug
Architecture: i386
DistroRelease: Ubuntu 9.04
Package: xserver-xorg-video-intel 2:2.6.3-0ubuntu9
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersion: Linux version 2.6.28-11-generic (buildd@palmer) (gcc version 4.3.3 (Ubuntu 4.3.3-5ubuntu4) ) #42-Ubuntu SMP Fri Apr 17 01:57:59 UTC 2009
SourcePackage: xserver-xorg-video-intel
Uname: Linux 2.6.28-11-generic i686

[Stephen Monteith (stephen-monteith)]

Here is the exact error:

Ubuntu is running in low-graphics mode

The following error was encountered. You may need
to update your configuration to solve this.

(EE) intel(0): Cannot support DRI with frame buffer width
> 2048

------

With UXA disabled I can load X and it supports the maximum resolution of the monitors.

[Stephen Monteith (stephen-monteith)]

Running X without any external monitor attached, UXA enabled works.

There appears to be a limit in the driver when uxa is enabled on how large the virtual resolution can be.

Here is that contents of the xorg.conf only using the laptop display:

# xorg.conf (X.Org X Window System server configuration file)
#
# This file was generated by dexconf, the Debian X Configuration tool, using
# values from the debconf database.
#
# Edit this file with caution, and see the xorg.conf manual page.
# (Type "man xorg.conf" at the shell prompt.)
#
# This file is automatically updated on xserver-xorg package upgrades *only*
# if it has not been modified since the last upgrade of the xserver-xorg
# package.
#
# Note that some configuration settings that could be done previously
# in this file, now are automatically configured by the server and settings
# here are ignored.
#
# If you have edited this file but would like it to be automatically updated
# again, run the following command:
# sudo dpkg-reconfigure -phigh xserver-xorg

Section "Monitor"
 Identifier "Configured Monitor"
EndSection

Section "Screen"
 Identifier "Default Screen"
 Monitor "Configured Monitor"
 Device "Configured Video Device"
 SubSection "Display"
  Virtual 1280 800
 EndSubSection
EndSection

Section "Device"
 Identifier "Configured Video Device"
 Option "AccelMethod" "uxa"
EndSection

[Bryce Harrington (bryce)]

For Karmic we're making UXA bugs like these a top priority, so I would like to forward this one upstream. First though, we need to verify the issue still exists with the latest upstream release. Would you please install and test the 2.7.0 driver and reproduce the bug, and let us know ASAP? A PPA with a Jaunty version of this driver is available at: https://edge.launchpad.net/~ubuntu-x-swat/+archive/x-updates/

[Stephen Monteith (stephen-monteith)]

I just tried the latest driver from the x-updates ppa. The issue was not corrected in this driver.

I'm attaching my Xorg.0.log from this attempt.