[git pull] drm tree for 3.12-rc1

Jesse Barnes jbarnes at virtuousgeek.org
Thu Sep 5 15:32:43 PDT 2013

On Thu, 5 Sep 2013 12:18:32 -0700
Linus Torvalds <torvalds at linux-foundation.org> wrote:

> On Thu, Sep 5, 2013 at 3:41 AM, Dave Airlie <airlied at linux.ie> wrote:
> >
> > i915: Haswell PC8+ support and eLLC support, HDMI 4K support, initial per-process VMA pieces,
> >       watermark reworks, convert to generic hdmi infoframes, encoder reworking, fastboot support,
> Hmm.
> The first time I booted this, I just got a black screen on my Haswell
> desktop when X11 started up.  I could ctrl-alt-BS and ctrl-alt-del to
> reboot the machine, and neither the Xorg.0.log nor the dmesg contained
> anything interesting.

Did the console come back after ctl-alt-bs?  Or was it just a blind
reboot?  Troubling that it doesn't happen again...

> I was about to try to bisect it, but decided to see how repeatable it
> was, and it didn't happen again. But it also hasn't ever happened
> before, so I'm a bit worried.
> This is with the DP cable, which has made my other Haswell issues go away.
> I'm also a bit bummed that hw acceleration of video doesn't seem to
> work on Haswell, meaning that full-screen is now a jerky mess. I fear
> that that is user-space libraries/X.org, but I thought I'd mention it
> in the hope of getting a "oh, it's working for us, you'll get a fix
> for it soon".

AFAIK we have libva support out there for HSW.  The trick is getting
your stack to actually use it.  Gwenole or Sean may be able to help.

> Because my shiny new 65W haswell is really nice and does a "make
> allmodconfig" in half the time of my old machine, but the GPU side has
> been something of a step backwards...

Well we definitely don't want that...

Jesse Barnes, Intel Open Source Technology Center

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