On Sat, Mar 16, 2013 at 01:04:34PM +0100, Stephan Boettcher wrote:
Moin,
[1.] One line summary of the problem:
Both screens stay blank during boot with 3.8.3.
[2.] Full description of the problem/report:
When booting the screens go blank soon after showing the grub menu. Starting X11 does not bring the screens up either. In /var/log/dmesg two lines appear (diff -u):
@@ -432,8 +434,10 @@ [drm] Supports vblank timestamp caching Rev 1 (10.10.2010). [drm] Driver supports precise vblank timestamp query. vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem +i915 0000:00:02.0: No connectors reported connected with modes +[drm] Cannot find any crtc or sizes - going 1024x768 fbcon: inteldrmfb (fb0) is primary device -Console: switching to colour frame buffer device 240x75 +Console: switching to colour frame buffer device 128x48 i915 0000:00:02.0: fb0: inteldrmfb frame buffer device i915 0000:00:02.0: registered panic notifier i915: No ACPI video bus found
Can you please file a bug report against bugs.freedesktop.org. Please boot both broken and working kernel with drm.debug=0xe added to your kernel cmdline and attach the complete dmesg of each to the bug report.
If you can do a quick bisect to figure out the offending commit, that would be good, too. And can you please also check whether the latest 3.9-rc kernel is affect? We need to know that since stable rules mandate that regressions in stable kernels can only be fixed once upstream is known to work.
Thanks, Daniel