linux-kernel - Re: [git pull] drm for rc1

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Date:	Tue, 11 Jan 2011 14:51:40 +1000
From:	Dave Airlie <airlied@...il.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Dave Airlie <airlied@...ux.ie>,
	Chris Wilson <chris@...is-wilson.co.uk>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Eric Anholt <eric@...olt.net>,
	Daniel Vetter <daniel.vetter@...ll.ch>,
	linux-kernel@...r.kernel.org,
	DRI mailing list <dri-devel@...ts.freedesktop.org>
Subject: Re: [git pull] drm for rc1

On Tue, Jan 11, 2011 at 2:48 PM, Dave Airlie <airlied@...il.com> wrote:
> On Tue, Jan 11, 2011 at 2:16 PM, Linus Torvalds
> <torvalds@...ux-foundation.org> wrote:
>> On Mon, Jan 10, 2011 at 2:59 PM, Dave Airlie <airlied@...ux.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?

I've also noticed Chris has some more patches in drm-intel-next I
haven't got in this pull request.

I don't think he's sent me a pull request though so not telling how
stable they are.

Dave.
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