It looks like memory allocation trouble in DRM with the "intel" video driver.
I booted today with the 2.6.36-1-generic-pae #7~lucind1-Ubuntu kernel. It does not set the external screen at the correct resolution (regression compared to .32) Usually it works otherwise, but I had the bug occur today also with 2.6.36. I switched between VT1 (console) and VT7 (the stuck X at kdm greeter stage) a few times for experiment. In /var/log/kern.log I had about a dozen of the following: Jan 7 09:41:46 wall-e kernel: [ 7.128517] [drm:i915_gem_madvise_ioctl] *ERROR* Attempted i915_gem_madvise_ioctl() on a pinned object and a few pairs of: Jan 7 09:42:37 wall-e kernel: [ 56.828954] [drm:drm_mode_getfb] *ERROR* invalid framebuffer id These messages also appear in dmsg, where they are followed by [ 56.856042] Skipping EDID probe due to cached edid In xorg.log when I switch to the VT7 there is: (II) Open ACPI successful (/var/run/acpid.socket) (II) AIGLX: Resuming AIGLX clients after VT switch (II) intel(0): No memory allocations (EE) intel(0): Couldn't create pixmap for fbcon (II) intel(0): EDID vendor "LEN", prod id 16500 (II) intel(0): Printing DDC gathered Modelines: (II) intel(0): Modeline "1440x900"x0.0 102.00 1440 1488 1520 1836 900 903 909 926 -hsync -vsync (55.6 kHz) (II) intel(0): Modeline "1440x900"x0.0 85.00 1440 1488 1520 1836 900 903 909 926 -hsync -vsync (46.3 kHz) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/698120 Title: Dual head corruption on 2.6.37 lucid backport -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
