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<body><span class="vcard"><a class="email" href="mailto:chewi@gentoo.org" title="James Le Cuirot <chewi@gentoo.org>"> <span class="fn">James Le Cuirot</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED NOTOURBUG - Slow VDPAU (rv770_restrict_performance_levels_before_switch failed)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=89987">bug 89987</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>NEW
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<td>RESOLVED
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<td style="text-align:right;">Resolution</td>
<td>---
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<td>NOTOURBUG
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED NOTOURBUG - Slow VDPAU (rv770_restrict_performance_levels_before_switch failed)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=89987#c9">Comment # 9</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED NOTOURBUG - Slow VDPAU (rv770_restrict_performance_levels_before_switch failed)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=89987">bug 89987</a>
from <span class="vcard"><a class="email" href="mailto:chewi@gentoo.org" title="James Le Cuirot <chewi@gentoo.org>"> <span class="fn">James Le Cuirot</span></a>
</span></b>
<pre>Sincere apologies for this but it looks like this is actually a bug in VLC.
Several factors threw me off, namely that mplayer isn't playing ball either
(don't know why yet), that I upgraded the kernel around the same time, that UVD
was introduced in 3.18, and the error in dmesg, all of which made it look like
a kernel problem.
Doesn't that mean it would have still been broken when going back to 3.17?
Actually it kinda was but not nearly as badly so I guess I didn't notice when
filing this bug. Under that kernel version, it looks as though it drops every
other frame in a smooth manner. Under recent kernels, it barely moves at all. I
started downgrading various userspace components like libvdpau, Mesa, and
xf86-video-ati to see whether any of those made a difference but it wasn't
until I downgraded VLC from 2.2 to 2.1 that the problem went away, both under
3.17 and 4.1. I also tried VLC git master under 4.1 and strangely it behaves
like 2.2 does under 3.17, dropping every other frame. Very confusing.
I am now bisecting to track down the precise cause.</pre>
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