[Intel-gfx] [regression] drm/i915: cleanup per-pipe reg usage

[Jesse Barnes]

On Thu, 17 Feb 2011 21:54:23 +0100
Alexey Fisher <bug-track at fisher-privat.net> wrote:

> Am Donnerstag, den 17.02.2011, 10:32 -0800 schrieb Jesse Barnes:
> > On Thu, 17 Feb 2011 08:26:20 +0100
> > Alexey Fisher <bug-track at fisher-privat.net> wrote:
> > 
> > > Am Mittwoch, den 16.02.2011, 10:57 -0800 schrieb Jesse Barnes:
> > > > On Sat, 12 Feb 2011 22:02:36 +0100
> > > > Alexey Fisher <bug-track at fisher-privat.net> wrote:
> > > > 
> > > > > In attachment are reg_dumps.
> > > > > 
> > > > > intel_1 - is gdm login screen, every thing is ok
> > > > > intel_2 - is after login, noise
> > > > > intel_3 - is after mouse pointer was placed to the upper left corner,
> > > > > image is ok again.
> > > > > 
> > > > > Am Samstag, den 12.02.2011, 18:09 +0000 schrieb Chris Wilson:
> > > > > > 
> > > > > > On Sat, 12 Feb 2011 15:16:16 +0100, Alexey Fisher
> > > > > > <bug-track at fisher-privat.net> wrote:
> > > > > > > Video is in attachment.
> > > > > > > 
> > > > > > > If mouse pointer is on the left top corner i get still image .. if
> > > > > > not -
> > > > > > > noise.
> > > > > > 
> > > > > > I think intel_reg_dumper before/after will be the best guide as to
> > > > > > where
> > > > > > the mistake crept in.
> > > > > > -Chris
> > > > 
> > > > Also, seeing the kernel messages from a clean boot after setting
> > > > drm.debug=4 would help; they'll tell us what FIFO watermarks we used
> > > > and might help me track down the flicker.
> > > 
> > > the bad files are from version 2.6.38-rc2-00090-g9db4a9c
> > > the good are 2.6.38-rc2-00079-g4a1dc3f
> > 
> > Hm watermarks actually look good, but the cursor b control reg is
> > different for some reason.
> > 
> > Oops, I see a problem.  Does this patch help?
> 
> Yes, it is working!
> 
> Thank you.

Can you try the other patch I posted as well and reply with your
tested-by if it still works (it should!)?

Thanks,
-- 
Jesse Barnes, Intel Open Source Technology Center