On Wed, Jul 08, 2015 at 08:40:17AM +0200, Michal Hocko wrote: > I have just tried to boot 4.2-rc1 and cannot seem to reproduce the issue > anymore. > > On Tue 07-07-15 10:43:58, Daniel Vetter wrote: > [...] > > Can you please > > boot with drm.debug=0xf (lots more nois in dmesg with this) and reproduce? > > I only need the last few pages before the WARNING backtrace, just to > > understand a bit better what's going on there. > > And 0xf debug level seem to paper over the problem because I do not see > the warning even with 4.1 where I am able to reproduce this reliably. > This suggests this is a timing sensitive issue. Ok that's starting to get nasty. Can you please test what happens when you boot with drm.vblankoffdelay=0 and whether drm.vblankoffdelay=1000 has an effect on reproduction rate? No debug output needed. -Daniel -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
