On 01 Mar, Chris Wilson wrote: > On Sun, Mar 01, 2015 at 12:57:01AM +0300, Andrey Skvortsov wrote: > > On 28 Feb, Chris Wilson wrote: > > > On Sat, Feb 28, 2015 at 03:20:37PM +0300, Andrey Skvortsov wrote: > > > > Unfortunately this is not the last bug, that breaks i915/drm working > > > > on my laptop. Sometimes system successfully loads with couple warnings mentioned in > > > > previous mail: > > > > > > > > [ 26.922953] WARNING: CPU: 1 PID: 767 at drivers/gpu/drm/i915/i915_gem.c:4525 i915_gem_free_object+0x13f/0x288 [i915]() > > > > [ 26.922954] WARN_ON(obj->frontbuffer_bits) > > > > > > That's inocuous, but for the serious hang, you may want to try > > > video=SVIDEO-1:d on the kernel commandline to workaround the hang. (Check > > > /sys/class/drm/card/ for the actual name of the connector for TV). I > > > think Ville mentioned he was looking/looked at the atomic-vs-load_detect > > > changes that is at the heart of the issue here. (Admittedly he did say > > > it was worthy of a drink or two.) > > > -Chris > > > > Thank you for the help. I've tried to add to the kernel command line > > 'video=card0-SVIDEO-1:d video=card0-VGA-1:d'. But despite of that > > kernel crashes with 'BUG: unable to handle kernel NULL pointer > > dereference at' occasionally. > > Remove the card0- and combine both into a single video= stanza: > video=SVIDEO-1:d,VGA-1:d I've just tried that, but the crash with NULL pointer dereference still happens. -- Best regards, Andrey Skvortsov Secure e-mail with gnupg: See http://www.gnupg.org/ PGP Key ID: 0x57A3AEAD
Attachment:
signature.asc
Description: Digital signature
_______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
