[Intel-gfx] Breaking suspend/resume by the Pipe A quirk

[Chris Wilson]

On Tue, Jun 03, 2014 at 05:19:26PM +0200, Thomas Richter wrote:
> Am 03.06.2014 17:14, schrieb Chris Wilson:
> >On Tue, Jun 03, 2014 at 05:04:52PM +0200, Thomas Richter wrote:
> >>Am 03.06.2014 16:45, schrieb Daniel Vetter:
> >>
> >>>
> >>>Yeah, both connectors use CRTC 0. Have you tried what happens if you:
> >>>- disable DVI1 first (--off)
> >>>- then enable it on crtc 1?
> >>
> >>Same difference, internal screen goes blank with --off, and stays
> >>blank after moving it to crtc 1 if I try to re-enable it with --auto
> >>or --mode.
> >
> >The oddity in the config is that the LVDS is reported as disconnected.
> >That should not be happening unless there is some sharing going on
> >inside the DVO chip.
> 
> Please note that on this specific notebook, the internal screen is
> connected via DVI, not via LVDS. I don't know what they did with the
> LVDS output, it's probably - as said - just disconnected.

I should have said VGA. Thinking about it, it is likely a shared DDC line
so that only a single EDID can be read.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre