Description of problem: The screen stays blank when I close the lid of my Dell Inspiron D630 laptop and open it a few seconds later. When I hit CTRL + ALT + F2 afterwards it switches on and displays the text login (as expected); when I hit CTRL + ALT + F1 now I get back to X and see the password dialog from gnome-screensaver I would have expected to see after opening the lid. All of the above only happens with the 2.6.32 based F12 kernels from koji -- for example kernel-2.6.32.7-37.fc12.x86_64. It works just fine with those that are based on 2.6.31 -- like kernel-2.6.31.9-174.fc12.x86_64 Additional info: * KMS is active; xorg-x11-server-Xorg-1.7.4-3.fc12.x86_64 xorg-x11-drv-intel-2.9.1-1.fc12.x86_64 * Intel GM965: 00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller [8086:2a02] (rev 0c) * The acpi subsystem according to the content of the file /proc/acpi/button/lid/LID/state seems to properly detect when the lid was opened I'm willing to debug this further if somebody gives me an idea in which direction to look next.
Just one more data point: Found a similar report at http://bugzilla.kernel.org/show_bug.cgi?id=14997
I have a similar problem, also introduced by 2.6.32, unfortunately in my case after reopening the lid I see sometimes a few windows shortly flashing and then only the mouse cursor, nothing else -- I always have to restart X, which is really annoying. Even worse: I don't see anything related in /var/log/messages or /var/log/Xorg.0.log. Switching between VT's doesn't help me, but I found out that my X server is running on VT 8 -- how could that come? (Note: I have a clean F12 installation with latest updates-testing). Any ideas how to track this down (besides bisecting kernel code as proposed in the upstream bug)?
Uhm, forgot to mention: I've an Intel 4500 card, my smolt profile is there: http://www.smolts.org/client/show/pub_2079d6ed-4c12-4609-9d46-443e490a1010
I have an Inspiron 1525 (the one that came with Ubuntu) and have the same issue on Fedora 12, all updates installed (I don't use updates-testing).
Oh, forgot to mention that if I boot with "nomodeset" on the kernel command line, the backlight turns back on normally when I open the lid. The problem only occurs with kernel video mode setting enabled.
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