[Bug 47034] [G45] mode set failure with testdisplay, low resolution modes fail and display doesn't come back

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=47034

Chris Wilson <chris at chris-wilson.co.uk> changed:

           What    |Removed                     |Added
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             Status|NEW                         |NEEDINFO

--- Comment #15 from Chris Wilson <chris at chris-wilson.co.uk> ---
Can you please test drm-intel-fixes? Specifically

commit 52bd02d8e3fd83201a1a81bdb4ec6fc0b54d24a0
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Fri Dec 7 10:43:24 2012 +0000

    drm/i915: Clear self-refresh watermarks when disabled

    If we elect to disable self-refresh as they require too many FIFO
    entries, clear the values prior to writing them into the registers. If
    they are too large they may occupy more bits than available and so
    corrupt neighbouring WM values.

    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
    Reviewed-by: Jesse Barnes <jbarnes at virtuousgeek.org>
    Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>

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