[Intel-gfx] I915 regression : black screen at boot / Sandybridge Mobile (GT2)

[Jesse Barnes]

On Thu, 12 Jan 2012 23:42:35 +0100
Vincent Vanackere <vincent.vanackere at gmail.com> wrote:

> On Thu, Jan 12, 2012 at 23:24, Jesse Barnes <jbarnes at virtuousgeek.org>wrote:
> 
> > On Thu, 12 Jan 2012 23:21:10 +0100
> > Vincent Vanackere <vincent.vanackere at gmail.com> wrote:
> > > I'm happy to report that this patch indeed fixes the issue for me (tested
> > > both on linus' master and drm-intel-next).
> > > Note that I had to apply it by hand (the patch was mangled by your mailer
> > > ?), therefore I'm resending your fix as an attachment in case other
> > people
> > > are interested.
> > >
> > > Many thanks for the quick fix !
> >
> > Great, thanks for testing.  Your fixed up patch was missing one line
> > though, can you re-test with it added?
> >
> > After the:
> >        temp &= ~PORT_TRANS_SEL_MASK;
> > you need to also add a:
> >        temp |= PORT_TRANS_SEL_CPT(pipe);
> >
> > in case you end up running the LVDS off of transcoder B.
> >
> >
> Tested with the (attached, hopefully correct) patch and it still works. :-)

Yay, thanks a lot!  I'll send it upstream now.

-- 
Jesse Barnes, Intel Open Source Technology Center
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 836 bytes
Desc: not available
URL: <http://lists.freedesktop.org/archives/intel-gfx/attachments/20120112/6843dcbd/attachment.sig>