[gm45] Dual head corruption on 2.6.37 lucid backport
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Invalid
|
Medium
|
Unassigned |
Bug Description
Lenovo X301 laptop, 4G ram, Intel(R) Core(TM)2 Duo CPU U9400 @ 1.40GHz. Intel GM45 Express graphic chipset, Kubuntu 10.4.1 LTS Lucid 32 bits, Xorg driver "intel"
# uname -a
Linux wall-e 2.6.37-
# version.log
Ubuntu 2.6.37-
Symptoms:
When starting X with the external screen attached to the VGA connector, I can't type anything in the login/password at the kdm greeter dialog. I can switch to VT1. Then I can kill kdm. Restarting kdm gives fatal error with technical messages about gem.
Starting without the external screen is okay. If I plug the external screen and start using it (xrandr), the cursor becomes corrupted when it is inside a konsole window on the laptop screen, but gets back to normal outside this window. Then X freezes after a while.
Working single-headed without plugging the external screen at all is fine so far.
Previous versions 2.6.35 and 2.6.32 did not do this
Previous version 2.6.37-11 already had the problem.
ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: linux-image (not installed)
Regression: Yes
Reproducible: Yes
ProcVersionSign
Uname: Linux 2.6.37-
Architecture: i386
Date: Thu Jan 6 14:52:34 2011
ProcEnviron:
LANGUAGE=
PATH=(custom, user)
LANG=fr_FR.UTF-8
SHELL=/bin/bash
SourcePackage: linux
[lspci]
00:00.0 Host bridge [0600]: Intel Corporation Mobile 4 Series Chipset Memory Controller Hub [8086:2a40] (rev 07)
Subsystem: Lenovo Device [17aa:20e0]
00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07)
Subsystem: Lenovo Device [17aa:20e4]
description: | updated |
tags: | added: kubuntu |
tags: |
added: regression-release removed: regression-potential |
description: | updated |
summary: |
- Dual head corruption on 2.6.37 lucid backport + [gm45] Dual head corruption on 2.6.37 lucid backport |
Changed in linux (Ubuntu): | |
status: | New → Confirmed |
Changed in linux (Ubuntu): | |
status: | New → Confirmed |
tags: | added: cscc |
dmesg attached (without X freezing).