On Tue, 5 Apr 2011 18:11:37 +0300, Pekka Enberg <penb...@kernel.org> wrote: > Hi Chris, > > On Tue, Apr 5, 2011 at 5:34 PM, Chris Wilson <ch...@chris-wilson.co.uk> wrote: > > If the outputs are active and continuing to access the GATT when we > > teardown the PTEs, then there is a potential for us to hang the GPU. > > The hang tends to be a PGTBL_ER with either an invalid host access or > > an invalid display plane fetch. > > > > v2: Reorder IRQ initialisation to defer until after GEM is setup. > > > > Reported-by: Pekka Enberg <penb...@kernel.org> > > Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk> > > Tested-by: Daniel Vetter <daniel.vet...@ffwll.ch> (855GM) > > I no longer get a blank screen after boot but flicker got more > aggressive during boot (it calms down after I've logged in). I see > tons of these in dmesg that don't appear with 2.6.39-rc1:
Well the PGTBL_ER is still there. I'm thinking it might worth a check to see if that is asserted even before we start... > [ 10.175843] [drm:intel_update_fbc], > [ 10.183100] [drm:i915_driver_irq_handler], pipe A underrun > [ 10.185085] [drm:i915_driver_irq_handler], pipe A underrun > [ 10.186082] [drm:i915_driver_irq_handler], pipe A underrun > [ 10.187087] [drm:i915_driver_irq_handler], pipe A underrun > [ 10.189082] [drm:i915_driver_irq_handler], pipe A underrun > [ 10.190085] [drm:i915_driver_irq_handler], pipe A underrun If I'm understanding the dmesg correctly, then these start even before we setup the first crtc. Whether that means we're not completely disabling all outputs or that we set a register incorrectly I don't know. Comparing an intel_reg_dumper with and without the patch applied might give a clue if it is a register that is set differently due to the reordering. The other question is of course whether you see those in 2.6.39-rc1 as well... Probably not since they will correspond with the increased flicker. -Chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
