[git pull] drm for rc1

[Dave Airlie]

On Tue, Jan 11, 2011 at 2:16 PM, Linus Torvalds
<torvalds at linux-foundation.org> wrote:
> On Mon, Jan 10, 2011 at 2:59 PM, Dave Airlie <airlied at linux.ie> wrote:
>> Highlights:
>> core/drivers: add support for high precision vblank timestamps
>> radeon: pageflipping support, Gen2 PCIE support
>> nouveau: reworked VRAM and VM support
>> intel: better ILK/SNB powersaving support, Full GTT support
>
> Lowlights: it's broken.
>
> I get millions of messages like:
>
>  ...
>  [ 8482.000414] [drm:i915_hangcheck_ring_idle] *ERROR* Hangcheck
> timer elapsed... render ring idle [waiting on 30938, at 30938], missed
> IRQ?
>  [ 8485.918124] [drm:i915_hangcheck_ring_idle] *ERROR* Hangcheck
> timer elapsed... render ring idle [waiting on 31068, at 31068], missed
> IRQ?
>  [ 8487.926963] [drm:i915_hangcheck_ring_idle] *ERROR* Hangcheck
> timer elapsed... render ring idle [waiting on 31129, at 31129], missed
> IRQ?
>  ...
>
> and everything is very choppy. I assume it's the power saving thing
> that broke again, but that's just a total random guess, I have nothing
> to actually back that up with.
>
> It worked fine after boot, but those problems began at 8287.139375
> (about two hours after boot - it may have coincided with screen saver,
> but who knows?)  and have been happening constantly since. The machine
> is not really usable, I'm writing this with annoying 2-second pauses
> every once in a while.

Okay I'll try and reproduce and curse Chris and Jesse, does booting with
i915.powersave=0 help any?

Dave.