It seems that the crash initially reported doesn't happen every time and is a side issue (I'll update the title and description to remove the crash). The real issue is that the screen is black with some random white dots scattered on the top of the monitor (picture attached). It seems that xorg is running fine without anything changing on the screen. CapsLock still turns on and off the LED.
I started a gdb session from a remote computer anticipating to do a full backtrace after the crash. Since the crash didn't happen I just took some backtraces and went on. I switched VT a few times, and that resulted in a SIGUSR1 and I had to tell gdb to continue. Attaching the gdb session log. Since this seems related to KMS (which a presume is part of DRM) I turned on DRM debugging by echo 1 | sudo tee /sys/module/drm/parameters/debug This results in a lot of extra information in the dmesg output. Attaching that as well. Anything else I should do? ** Attachment added: "gdb-Xorg-VESA.txt" http://launchpadlibrarian.net/29238381/gdb-Xorg-VESA.txt ** Attachment added: "img_1503.jpg" http://launchpadlibrarian.net/29238382/img_1503.jpg ** Attachment added: "dmesg-drmdebug.txt" http://launchpadlibrarian.net/29238383/dmesg-drmdebug.txt ** Summary changed: - [i965GM] Xorg crashes on startup when using driver "VESA" (KMS bug) + [i965GM] Xorg starts to black screen with some corruption when using driver "VESA" (KMS bug) ** Description changed: Binary package hint: xserver-xorg-video-vesa When adding the line Driver "VESA" - to the "Device" section of xorg.conf, xorg crashes on startup. It starts normally when I use UMS instead of KMS (i915.modeset=0 on boot). + to the "Device" section of xorg.conf, xorg starts up with only a black screen with a few lines of scattered white dots on the upper part. It starts normally when I use UMS instead of KMS (i915.modeset=0 on boot). This is a Lenovo X61 Tablet which has intel 965GM graphics. [lspci] 00:00.0 Host bridge [0600]: Intel Corporation Mobile PM965/GM965/GL960 Memory Controller Hub [8086:2a00] (rev 0c) Subsystem: Lenovo Device [17aa:20b3] 00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller [8086:2a02] (rev 0c) Subsystem: Lenovo Device [17aa:20b5] ProblemType: Bug Architecture: i386 Date: Sat Jul 18 16:56:13 2009 DistroRelease: Ubuntu 9.10 MachineType: LENOVO 7764CTO Package: xserver-xorg-video-vesa 1:2.2.0-1 ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.31-3-generic root=UUID=938751f9-b020-46b7-a6d6-d4ec43b0c40a ro single ProcEnviron: LANG=en_US.UTF-8 SHELL=/bin/bash ProcVersionSignature: Ubuntu 2.6.31-3.19-generic RelatedPackageVersions: xserver-xorg 1:7.4+3ubuntu5 libgl1-mesa-glx 7.5~rc4-1ubuntu3 libdrm2 2.4.11-1ubuntu1 xserver-xorg-video-intel 2:2.7.99.901+git20090702.74227141-0ubuntu1 xserver-xorg-video-ati 1:6.12.99+git20090629.f39cafc5-0ubuntu1 SourcePackage: xserver-xorg-video-vesa Uname: Linux 2.6.31-3-generic i686 dmi.bios.date: 07/29/2008 dmi.bios.vendor: LENOVO dmi.bios.version: 7SET34WW (1.20 ) dmi.board.name: 7764CTO 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:bvr7SET34WW(1.20):bd07/29/2008:svnLENOVO:pn7764CTO:pvrThinkPadX61Tablet:rvnLENOVO:rn7764CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 7764CTO dmi.product.version: ThinkPad X61 Tablet dmi.sys.vendor: LENOVO fglrx: Not loaded system: distro: Ubuntu architecture: i686kernel: 2.6.31-3-generic ** Tags added: corruption ** Tags removed: crash -- [i965GM] Xorg starts to black screen with some corruption when using driver "VESA" (KMS bug) https://bugs.launchpad.net/bugs/401214 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs