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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - [G45] mode set failure with testdisplay, low resolution modes fail and display doesn't come back"
href="https://bugs.freedesktop.org/show_bug.cgi?id=47034#c16">Comment # 16</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - [G45] mode set failure with testdisplay, low resolution modes fail and display doesn't come back"
href="https://bugs.freedesktop.org/show_bug.cgi?id=47034">bug 47034</a>
from <span class="vcard"><a class="email" href="mailto:guang.a.yang@intel.com" title="yangguang <guang.a.yang@intel.com>"> <span class="fn">yangguang</span></a>
</span></b>
<pre>Created <span class=""><a href="attachment.cgi?id=71707" name="attach_71707" title="dmesg with commit 52bd02d8e3fd83201a1a81bdb4ec6fc0b54d24a0">attachment 71707</a> <a href="attachment.cgi?id=71707&action=edit" title="dmesg with commit 52bd02d8e3fd83201a1a81bdb4ec6fc0b54d24a0">[details]</a></span>
dmesg with commit 52bd02d8e3fd83201a1a81bdb4ec6fc0b54d24a0
(In reply to <a href="show_bug.cgi?id=47034#c15">comment #15</a>)
<span class="quote">> Can you please test drm-intel-fixes? Specifically
>
> commit 52bd02d8e3fd83201a1a81bdb4ec6fc0b54d24a0
> Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
> 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 <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
> Reviewed-by: Jesse Barnes <<a href="mailto:jbarnes@virtuousgeek.org">jbarnes@virtuousgeek.org</a>>
> Signed-off-by: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>></span >
I try this commit with -fixes, but the issue still occurs, the modes which
below 800x600 can't be displayed.</pre>
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