Pagefip vs modeset race.
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/777956
Title:
X display with Intel i915 driver occasionally goes blank after resume
from suspend
Status in “xserver-xorg-video-intel” package in Ubuntu:
Fix Released
Bug description:
Binary package hint: xorg
I have had Ubuntu 10.04 on my laptop (see details in attachments)
since September 2010. I have been using kernel modeset. This one has a
hybrid Intel/ATI display. I disabled the ATI one and only used the
Intel. Here is the relevant lspci output:
00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset
Integrated Graphics Controller (rev 07)
00:02.1 Display controller: Intel Corporation Mobile 4 Series Chipset
Integrated Graphics Controller (rev 07)
For a while this laptop suspended and resumed with no problem
whatsoever. I use this laptop as a work machine that I suspend/resume
often (once or twice a day if not more). Recently (for a few months)
the laptop sometimes wake up with a bizzare behavior on the LCD
display: it flashes a bright light then the LCD went black. Never to
recover until I rebooted the laptop. Trying to suspend and resume
again won't help.
The result from dmesg etc came from a fresh reboot, so it might not
show anything there.
Once I tried to "scavenge" for debug info or other logged problems
when this happened by gathering all the dmesg, /var/log/kern,
/var/log/messages or /var/log/Xorg.0.log -- they did not contain
anything useful AFAIK. I can attach them if you want.
The difficulty is that this bug would not appear consistently. It only
appears randomly and I can't tell when it would happen. I am filing
this bug report just in case other Thinkpad users with intel
integrated graphics also experienced similar problem (or if it has
been reported elsewhere). I have a suspicion that perhaps some kernel
update in the past caused this bug, since it never happened before.
Another point to consider: from time to time I would use xrandr to
duplicate or extend the display to external VGA projector. (`xrandr
-q' is usually all I did and the magic is done). Not sure if this has
to do with the problem said above.
ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: xorg 1:7.5+5ubuntu1
ProcVersionSignature: Ubuntu 2.6.32-31.61-generic 2.6.32.32+drm33.14
Uname: Linux 2.6.32-31-generic x86_64
Architecture: amd64
Date: Thu May 5 11:47:45 2011
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64
(20100816.1)
MachineType: LENOVO 2764CTO
PccardctlIdent:
Socket 0:
no product info available
PccardctlStatus:
Socket 0:
no card
ProcCmdLine: BOOT_IMAGE=/vmlinuz-2.6.32-31-generic
root=UUID=bd2ced17-1c8e-475d-8630-23a7d9363d51 ro quiet nosplash
ProcEnviron:
PATH=(custom, user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: xorg
Symptom: display
dmi.bios.date: 10/30/2008
dmi.bios.vendor: LENOVO
dmi.bios.version: 7UET50WW (1.20 )
dmi.board.name: 2764CTO
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias:
dmi:bvnLENOVO:bvr7UET50WW(1.20):bd10/30/2008:svnLENOVO:pn2764CTO:pvrThinkPadT400:rvnLENOVO:rn2764CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 2764CTO
dmi.product.version: ThinkPad T400
dmi.sys.vendor: LENOVO
glxinfo: Error: [Errno 2] No such file or directory
system:
distro: Ubuntu
codename: lucid
architecture: x86_64
kernel: 2.6.32-31-generic
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