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<body><span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [i915GM regression] black screen with self-refresh on fbcon but not X"
href="https://bugs.freedesktop.org/show_bug.cgi?id=76103">bug 76103</a>
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<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Status</td>
<td>ASSIGNED
</td>
<td>RESOLVED
</td>
</tr>
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<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>FIXED
</td>
</tr></table>
<p>
<div>
<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [i915GM regression] black screen with self-refresh on fbcon but not X"
href="https://bugs.freedesktop.org/show_bug.cgi?id=76103#c25">Comment # 25</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [i915GM regression] black screen with self-refresh on fbcon but not X"
href="https://bugs.freedesktop.org/show_bug.cgi?id=76103">bug 76103</a>
from <span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span></b>
<pre>commit 2ab1bc9df01dbc19b55b2271100db7407fa6bfdc
Author: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>>
Date: Mon Apr 7 08:54:21 2014 +0200
drm/i915: Disable self-refresh for untiled fbs on i915gm
Apparently it doesn't work. X-tiled self-refresh works flawlessly
otoh. Apparently X still works correctly with linear framebuffers, so
might just be an issue with the initial modeset. It's unclear whether
this just borked wm setup from our side or a hw restriction, but just
disabling gets things going.
Note that this regression was only brought to light with
commit 3f2dc5ac05714711fc14f2bf0ee5e42d5c08c581
Author: Ville Syrjälä <<a href="mailto:ville.syrjala@linux.intel.com">ville.syrjala@linux.intel.com</a>>
Date: Fri Jan 10 14:06:47 2014 +0200
drm/i915: Fix 915GM self-refresh enable/disable
before that self-refresh for i915GM didn't work at all.
Kudos to Ville for spotting a little bug in the original patch I've
attached to the bug.
Cc: Ville Syrjälä <<a href="mailto:ville.syrjala@linux.intel.com">ville.syrjala@linux.intel.com</a>>
Cc: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Bugzilla: <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [i915GM regression] black screen with self-refresh on fbcon but not X"
href="show_bug.cgi?id=76103">https://bugs.freedesktop.org/show_bug.cgi?id=76103</a>
Tested-by: Krzysztof Mazur <<a href="mailto:krzysiek@podlesie.net">krzysiek@podlesie.net</a>>
Cc: Krzysztof Mazur <<a href="mailto:krzysiek@podlesie.net">krzysiek@podlesie.net</a>>
Cc: <a href="mailto:stable@vger.kernel.org">stable@vger.kernel.org</a>
Reviewed-by: Ville Syrjälä <<a href="mailto:ville.syrjala@linux.intel.com">ville.syrjala@linux.intel.com</a>>
Signed-off-by: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>>
[Jani: rebase on top of drm-next with primary plane support.]
Signed-off-by: Jani Nikula <<a href="mailto:jani.nikula@intel.com">jani.nikula@intel.com</a>></pre>
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