Hi On 2015-06-08, Ander Conselvan De Oliveira wrote: > On Mon, 2015-06-08 at 11:06 +0300, Ander Conselvan De Oliveira wrote: > > On Sun, 2015-06-07 at 04:32 +0200, Stefan Lippers-Hollmann wrote: > > > On 2015-06-07, Ville Syrjälä wrote: > > > > On Fri, Jun 05, 2015 at 11:18:21PM +0200, Stefan Lippers-Hollmann wrote: > > > > > On 2015-04-20, Dave Airlie wrote: [...] > > > > > > Ander Conselvan de Oliveira (28): > > > > > [...] > > > > > > drm/i915: Allocate connector state together with the connectors > > > > > [...] > > > > > > > > > > This commit introduces a regression relative to v4.0 on an Intel > > > > > D945GCLF2 mainboard[1] (Atom 330) with Intel 82945G/GZ onboard graphics > > > > > using its (only-) VGA connector for me. > > > > > > > > > > v4.1-rc6-52-gff25ea8: > > > > > [ 13.265699] BUG: unable to handle kernel NULL pointer dereference at 0000000000000010 > > > > > [ 13.265723] IP: [<ffffffffa0556f01>] intel_modeset_update_connector_atomic_state+0x61/0x90 [i915] > > > > > > > > Hmm. Smells like a connector with a NULL state pointer, and the bad > > > > commit touched exactly the part that sets it up. I can't immediately > > > > spot any place where we'd forget to set it up though. > > > > > > > > Can you try with something like this so we'd at least find out which > > > > connector(s) is/are at fault here? > > > > > > With the patch applied, the kernel (v4.1-rc6-104-g4b17069) locks up even > > > harder, so I had to switch to a serial console in order to fetch the > > > boot messages: > > > > > > [ 13.492784] connector = ffff880079bb8000 > > > [ 13.910439] connector = ffff8800795b5800 > > > [ 14.463114] connector = ffff8800795b6000 > > > [ 14.700707] connector = ffff8800795b6800 > > > [ 14.869418] connector = ffff8800795b7000 > > > [ 14.923848] connector = ffff8800795b7000 > > > > > > Full, gzipped, bootlog attached - thanks a lot for your efforts. > > > > Could you repeat the process with drm.debug=0xe in your kernel command > > line and send the logs again? > > Never mind, Ville's patch produced all the information necessary. Please > give the patch I just sent a try. Thanks a lot, as already reported as a response to your patch, your change "drm/i915: Allocate connector state together with the connectors" fixes the problem for me. Regards Stefan Lippers-Hollmann _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
