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    SubjectRe: Revert 737a3bb9416ce2a7c7a4170852473a4fcc9c67e8 ?
    Michel Dänzer wrote:

    >>> That does sound like the GPU locks up. Do you get any messages in dmesg
    >>> about lockups and attempts to reset the GPU at any time?
    >>
    >> No.
    >
    > Hmm, I guess the constant SIGALRMs might prevent the lockup detection
    > from kicking in... Maybe you can try starting the X server with
    > -dumbSched to see if that gets things along any further, but in the end
    > there's probably no way around figuring out what causes the lockup and
    > fixing that anyway.

    I have an old AGP box that locks with 600g + agpgart - It used to give
    GPU lockup to dmesg/log, but (I only test it occasionally) it doesn't
    anymore. I can still sysrq OK.

    I wonder if something changed in recent months in the drm/whatever code
    that has changed/blocked the logging.
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