Maik Zumstrull wrote: > On Sun, Oct 7, 2012 at 7:26 PM, Julien Cristau <jcristau at debian.org> wrote: >> On Mon, Oct 1, 2012 at 03:24:32 -0700, Jonathan Nieder wrote: >>> - without this patch, modern X errors out instead of starting, [...] >> I'd expect X to start with vesa or fbdev, rather than erroring out? > > There's a corner case when X and the kernel know about the graphics > device, but libdrm doesn't, in which case an assertion in the X driver > fails and X doesn't start. Upstream libdrm has been okay for a few > releases. I think Julien means the case where the kernel does not know about the graphics device. From [1]: | 3.2 crashes as well, but not as hard as 3.4. With 3.2, X doesn't come | up, but you can switch to a console and reboot. 3.4 needs the reset | button. X should have been able to start using the vesa or fbdev driver. I'm not sure why that doesn't happen --- do you have an Xorg log from booting and trying to start X with a 3.2.y kernel without the "drm/i915: add Ivy Bridge GT2 Server entries" patch? Thanks, Jonathan [1] http://bugs.debian.org/684767
