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<body><span class="vcard"><a class="email" href="mailto:krisman@collabora.co.uk" title="krisman@collabora.co.uk">krisman@collabora.co.uk</a>
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<a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - [igt]kms_frontbuffer_tracking@fbc-suspend fails"
href="https://bugs.freedesktop.org/show_bug.cgi?id=100020">bug 100020</a>
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<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">Status</td>
<td>REOPENED
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<td>ASSIGNED
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<b><a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - [igt]kms_frontbuffer_tracking@fbc-suspend fails"
href="https://bugs.freedesktop.org/show_bug.cgi?id=100020#c8">Comment # 8</a>
on <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - [igt]kms_frontbuffer_tracking@fbc-suspend fails"
href="https://bugs.freedesktop.org/show_bug.cgi?id=100020">bug 100020</a>
from <span class="vcard"><a class="email" href="mailto:krisman@collabora.co.uk" title="krisman@collabora.co.uk">krisman@collabora.co.uk</a>
</span></b>
<pre>(In reply to Dorota Czaplejewicz from <a href="show_bug.cgi?id=100020#c7">comment #7</a>)
<span class="quote">> I think your report is something else; several asserts are next to each
> other.</span >
I understand your point and I agree, The SNB issue should be handled
separately, I'm opening a new bug for that.
Still, I reproduced the bug you reported here on a Haswell this time.
Bisecting Linux shows the failure started after f7e9b004b8a3 ("drm/i915/fbc:
inline intel_fbc_can_choose()"), which introduced a new error handling for the
CRTC FBC selection.
The proposed fix is a patch to IGT (attached), which catches the error
handling scenario introduced by that patch.
Patch also submitted to the IGT list for review.</pre>
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