Hi Chris, On Tue, Apr 5, 2011 at 5:34 PM, Chris Wilson 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 > Signed-off-by: Chris Wilson > Tested-by: Daniel Vetter (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: [ 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 I've attached the full dmesg. Pekka