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    SubjectRe: [git pull] drm for rc1
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    Date
    "Dave Airlie" <airlied@gmail.com> wrote:

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

    Arg. It's been ok on my ILK systems, but Chris has found some issues with out watermarking code iirc; apparently we're underflowing the display FIFO, causing all sorts of trouble. If it works before the pull of Dave's tree, can you bisect?

    Thanks,
    --
    Jesse Barnes, Intel Open Source Technology Center
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