On Mon, Mar 28, 2011 at 10:09 PM, Chris Wilson <chris at chris-wilson.co.uk> wrote: > On Mon, 28 Mar 2011 21:53:32 +0300, Pekka Enberg <penberg at kernel.org> > wrote: >> On Mon, Mar 28, 2011 at 9:43 PM, Pekka Enberg <penberg at kernel.org> wrote: >> > On Thu, Mar 24, 2011 at 1:34 PM, Dave Airlie <airlied at linux.ie> wrote: >> >> It should have the fix for your i915 in the intel patches, along with >> >> a couple of radeon fixes, and the vblank change + fix. >> > >> > I'm seeing some laptop screen flicker during boot and a while after I >> > log in (it then seems to go away). It's my trusty old Macbook with >> > i915 and Ubuntu 10.04. I see this in dmesg: >> > >> > [ ? ?1.782046] [drm] initialized overlay support >> > [ ? ?1.782075] [drm] capturing error event; look for more information >> > in /debug/dri/0/i915_error_state >> > [ ? ?1.782889] render error detected, EIR: 0x00000010 >> > [ ? ?1.782933] page table error >> > [ ? ?1.782970] ? PGTBL_ER: 0x00000102 >> > [ ? ?1.783009] [drm:i915_report_and_clear_eir] *ERROR* EIR stuck: >> > 0x00000010, masking >> > [ ? ?1.783063] render error detected, EIR: 0x00000010 >> > [ ? ?1.783106] page table error >> > [ ? ?1.783143] ? PGTBL_ER: 0x00000102 >> > >> > I'm attaching the full dmesg, i915_error_state, and .config. > > Right, looks like we have an issue with setting up the hardware for > KMS/GEM whilst it is still active. As we disable the outputs anyway for > the KMS takeover, we can arrange to do so first and so prevent this bug. > The side-effect will be that initial screen blanking will last a little > bit longer.
Let me know if there's a patch/git tree to test. The flicker is extremely annoying and I boot the machine often because it's my main kernel development laptop. >> I'm also seeing these errors now which seem to be new from 2.6.38-final: >> >> [ ?437.566022] [drm:i915_gem_mmap_gtt] *ERROR* Attempting to mmap a >> purgeable buffer >> [ ?437.566187] [drm:i915_gem_mmap_gtt] *ERROR* Attempting to mmap a >> purgeable buffer >> [ ?437.566232] [drm:i915_gem_mmap_gtt] *ERROR* Attempting to mmap a >> purgeable buffer >> [ ?437.566275] [drm:i915_gem_mmap_gtt] *ERROR* Attempting to mmap a >> purgeable buffer >> [ ?437.566318] [drm:i915_gem_mmap_gtt] *ERROR* Attempting to mmap a >> purgeable buffer > > That's an old userspace bug, which so far no one has been able to > reproduce on the upstream ddx. Is it harmless? Why is the kernel complaining about it?
