Messages in this thread | | | Date | Sun, 21 Nov 2010 10:30:43 +0000 | Subject | Re: kernel 2.6.37-rc2 breaks i915 graphics | From | Chris Wilson <> |
| |
On Sun, 21 Nov 2010 10:23:44 +0000, Chris Vine <chris@cvine.freeserve.co.uk> wrote: > Hi, > > With kernel 2.6.37-rc2, i915 graphics usually fails on boot-up after > modesetting with my Lenovo S12 netbook which uses the Intel 945GME > Express Integrated Graphics Controller. It displays up to the point at > which modesetting takes place and then usually goes blank. > > There may be some kind of race at work here: first, sometimes (maybe 1 > times in 4) graphics comes up correctly on a first cold boot, but I > have never managed to get it to come up on a warm reboot. Secondly, > graphics can be restored when I know (but cannot see) that boot-up has > concluded, simply by suspending the laptop and then resuming. Resuming > the laptop after a suspend always brings up the graphics correctly.
Add drm.debug=0xe to your boot commandline and compare if there is any difference between a successful cold boot, a broken cold boot and a warm boot. Similarly, comparing the output of intel_reg_dumper after each should yield a few clues as to what stage in the boot process we fail. -Chris
-- Chris Wilson, Intel Open Source Technology Centre
| |