[i945gme] Using an external monitor has caused visual effect to regress to none and compiz cannot be used
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| xserver-xorg-video-intel (Ubuntu) |
Confirmed
|
Undecided
|
Unassigned | ||
Bug Description
Binary package hint: xorg
Compiz working fine. Use an external display for the first time and it works after much jiggling. On return to standard laptop screen all visual effects are disabled and cannot be re-enabled.
ProblemType: Bug
Architecture: i386
DistroRelease: Ubuntu 9.04
Package: xorg 1:7.4~5ubuntu18
ProcEnviron:
LANG=en_GB.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: xorg
Uname: Linux 2.6.28-11-generic i686
Update: Upon re-connecting the external display, after several reboots, I was able to re-enable the visual effects and compiz. Whatever changes the "display" tool is making to my desktop resolution clearly has an affect on compiz and visual effects in general.
My problem is resolved at present. However the bug still remains.
[lspci]
00:00.0 Host bridge [0600]: Intel Corporation Mobile 945GME Express Memory Controller Hub [8086:27ac] (rev 03)
Subsystem: Samsung Electronics Co Ltd Device [144d:ca00]
00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 945GME Express Integrated Graphics Controller [8086:27ae] (rev 03)
Subsystem: Samsung Electronics Co Ltd Device [144d:ca00]
| JMFTheVCI (jmfthevci) wrote | #1 |
| description: | updated |
| affects: | xorg (Ubuntu) → xserver-xorg-video-intel (Ubuntu) |
| Changed in xserver-xorg-video-intel (Ubuntu): | |
| status: | New → Confirmed |
| tags: | added: dual-head |
| tags: | added: compiz |
| description: | updated |
| summary: |
- Using an external monitor has caused visual effect to regress to none - and compiz cannot be used + [i945gme] Using an external monitor has caused visual effect to regress + to none and compiz cannot be used |
| tags: | added: 945gme |
| Geir Ove Myhr (gomyhr) wrote | #2 |
Unfortunately, your chipset (945gme) has a hardware limitation in that it does not support hardware acceleration if the virtual desktop (as defined in xorg.conf) exceeds 2048 in one direction. This usually happens when you use an extended desktop side-by-side. A possible workaround is to place the monitors above one another. This bug is a duplicate of bug 146859.