On Mon, Jul 07, 2014 at 06:40:20PM +0200, Thomas Richter wrote: > On 07.07.2014 17:04, Daniel Vetter wrote: > >On Sat, Jun 21, 2014 at 01:57:32PM +0200, Thomas Richter wrote: > >>Hi Daniel, dear intel experts, > >> > >>this a bug report for the intel i945GM integrated graphics chipset (*NOT* > >>the 830GM this time). Since at least 3.12.0, but also with the latest > >>intel-drm-nightly, I have no boot console on the 945GM chipset, the screen > >>just remains blank. /var/log/messages shows an assertion failure, see the > >>attached kernel log for details, booted with drm.debug=0x0e. > >> > >>The problem appears if the kernel is booted with the vga=792 option - note > >>that the panel in this laptop is a 1024x768 and thus this is the native > >>resolution. The problem does not appear with a text console. > >> > >>This sounds remarkably similar to the deadlock the 830GM had a while ago > >>when booting with a graphical console, also with vga=792. > > > >Should be unrelated - more likely it's some fumble in the modeset > >sequence, i945 is known to be picky in that area. Just to confirm: Latest > >3.16-rc kernels are still broken? > > At least 3.16-rc from one and a half week ago is affected, too. I'm > currently not in reach of the machine - actually almost as far appart as > possible. > > >Can you please boot with drm.debug=0xe and grab a new dmesg with the > >backtrace? > > I'll try next week. What do you mean by "backtrace" apart from > drm.debug=0x0e? Just the entire dmesg up to the WARNING. > >>As soon as X is initialized, graphics work again, I just don't have a boot > >>console. > > > >So once X is running fbcon also works again, i.e. it's only the initial > >boot console that's black? > > Exactly. Once X is up, the console is fine again, too. > > Greetings from Sapporo (<- which explains my unavailability), Ok, enjoy your stay then ;-) -Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
