Public bug reported: 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 ** Affects: xorg (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug lucid -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/777956 Title: X display with Intel i915 driver occasionally goes blank after resume from suspend _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp