<html>
<head>
<base href="https://bugs.freedesktop.org/" />
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [HSW] Upgrading from kernel 3.13.x to 3.14.x causes FPS drops during video playback in XBMC"
href="https://bugs.freedesktop.org/show_bug.cgi?id=75725">75725</a>
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>[HSW] Upgrading from kernel 3.13.x to 3.14.x causes FPS drops during video playback in XBMC
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Severity</th>
<td>critical
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Reporter</th>
<td>bugzilla1@gmx.com
</td>
</tr>
<tr>
<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Version</th>
<td>XOrg CVS
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/Intel
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=95055" name="attach_95055" title="dmesg">attachment 95055</a> <a href="attachment.cgi?id=95055&action=edit" title="dmesg">[details]</a></span>
dmesg
XBMC is an OpenGL application which can use VAAPI to decode videos.
Since upgrading to a kernel of the 3.14.x-family (from 3.14-rc1), I experience
significant FPS drops in video playback.
Reverting back to a kernel of the 3.13.x-family resolves that issue. Watching
videos under 3.14.x is therefore at the moment impossible.
Turning VSync off or on doesn't solve the problem.
Required information:
Chipset: HSW
uname -m: x86_64
uname -r: 3.14.0-031400rc5-generic
Distribution: Ubuntu 13.10
Machine or mobo model: Fujitsu ESPRIMO Q920
Display connector: DisplayPort (conncted to the TV via a HDMI adapter)
Please find attached:
dmesg</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the QA Contact for the bug.</li>
<li>You are on the CC list for the bug.</li>
<li>You are the assignee for the bug.</li>
</ul>
</body>
</html>