** Description changed:
Binary package hint: xserver-xorg-video-intel
- On Jaunty latest on a Dell Latitude X1 (i915GMS), with an externally
- connected Dell 2405, the external (sometimes the internal) screen stays
- dark after going through suspend/resume via lid close.
-
- I can mostly recover from the situation by Alt-F1 to shell and
- restarting GDM. However, things are very weird afterwards. Both gnome
- panels sits directly on top of each other. Maximizing windows on the
- external screen result in ~100 pixel wide windows, although the screen
- has got 1920 pixels and the desktop background spreads to all of those.
+ On Karmic latest KMS (and Jaunty Non-KMS) on a Dell Latitude X1
+ (i915GMS), with an externally connected Dell 2405, suspending by closing
+ the lid destroys the video configuration. Briefly before going to
+ standby, the displays switch to mirrored mode and a low resolution.
+ After waking up, the configuration has to be manually restored via
+ xrandr or Display Properties.
- Suspending via FUSA or pm-suspend instead works as expected.
- Turning on "Pipe-A forcing" does not help with the problem.
- - I have the same issue on Karmic and Non-KMS (either EXA or UXA), but *not*
on KMS.
- - The bug shows up in either extended desktop or mirrored configuration, does
not matter.
- - Kind of related: When I deactivate the external display with screen
resolution prefs and close the lid, the external display is briefly activated
and used for (extended?) Desktop - why?
This is a regression from Intrepid and Hardy.
+
+ ANALYSIS OF THE PROBLEM:
+
+ - destroying the display config happens somewhere within acpid, because the
issue is not present when I shutdown acpid.
+ - /etc/acpi/events/asus-wireless seems to be involved, because when I move
that away (and reload acpid), the issue is not present
+ - that event invokes /etc/acpi/asus-wireless.sh
+ - destroying the display config happens somewher inside
toggleAllWirelessStates(), because when I comment this and all following lines
out the issue is not present. If this line is still in, and the following out,
the issue is present.
+ - I currently do not know how to debug further
[lspci]
00:00.0 Host bridge: Intel Corporation Mobile 915GM/PM/GMS/910GML Express
Processor to DRAM Controller (rev 03)
Subsystem: Dell Device 01a3
00:02.0 VGA compatible controller: Intel Corporation Mobile 915GM/GMS/910GML
Express Graphics Controller (rev 03)
Subsystem: Dell Device 01a3
--
[i915] dualscreen: video config is destroyed by suspending via lid (KMS)
https://bugs.launchpad.net/bugs/352708
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