On Thu, Nov 22, 2012 at 7:23 PM, Henrik Rydberg rydberg@euromail.se wrote:
My apologies for the long delay in answering, I've somehow mixed up different bugreports and thought I've sent you a patch to test already. Anyway, please test
Tested-by: Henrik Rydberg <rydberg@euromail.se>Can you please boot with drm.debug=0xe added to your kernel cmdline with that patch applied and attach the full dmesg?
Are you looking for something in particular? The patch obviously works because edp_bpp is never set. The reason seems to be
[ 1.634759] [drm:intel_parse_bios], VBT signature missing
In the source, a few lines above that message, we have something that looks suspciciously like an off-by-one error:
/* Scour memory looking for the VBT signature */ for (i = 0; i + 4 < size; i++) {If that matters or not, I do not know. Any more tests would have to wait until tomorrow.
Yeah, the utter lack of a vbt fits very nicely, thanks for checking, I've merged the patch into drm-intel-fixes and will forward it for inclusion into 3.7 rsn. -Daniel