[Bug 90725] [965g] Undetected bit17 swizzling (note desktop not mobile)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90725

--- Comment #44 from Fab Stz <fabstz-it at yahoo.fr> ---
(In reply to Chris Wilson from comment #39)
> In the meantime, can I please ask you to run a git bisection on
> xf86-video-intel:

I always had bad displays. Result of git bisection :

0d42b0ed25d4112e0b3e3218e5c42947bbeb9e27 is the first bad commit
commit 0d42b0ed25d4112e0b3e3218e5c42947bbeb9e27
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Wed Dec 24 08:12:52 2014 +0000

    sna/gen7: Limit threads on HSW GT1

    For whatever reason, it seems that for HSW GT1 we cannot specify the
    maximum value of the field and leave it to the hardware to clamp the
    value to the maximum supported. The impact should be zero other than the
    possibilty it workarounds an issue if the hardware doesn't apply the
    limit.

    References: https://bugs.freedesktop.org/show_bug.cgi?id=87564
    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>

:040000 040000 ea65d57f3c6f2e8ce48d2dc3f20dda9c0c9e1147
feb8dd1f98bc4a14d9fddcca3be4272b9fdc211a M      src


Latest git containing these two commits from Comment 42 and Comment 43
> commit b0aa9d349ddf727dc544bc46d066f990d3e42776
> commit dbfbbcb4b37548172fd6fe9a6976e5ec310477ca
fixed both issues (the crashing issue and the display issue of attachment
116237 )

So I can say I didn't face any issue yet with kernel I915_BIT_6_SWIZZLE_9_10_17
+ git as of today 11am GMT whether I use --enable-debug=full or don't set
debug=full

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