<html>
<head>
<base href="https://bugs.freedesktop.org/" />
</head>
<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 - [hsw] WAIT_FOR_EVENT hangs (full screen vsync on pipe 1 with BCS)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=69119">bug 69119</a>
<br>
<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>
<tr>
<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 - [hsw] WAIT_FOR_EVENT hangs (full screen vsync on pipe 1 with BCS)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=69119#c12">Comment # 12</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [hsw] WAIT_FOR_EVENT hangs (full screen vsync on pipe 1 with BCS)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=69119">bug 69119</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 8ff8eb2b38dc705f5c86f524c1cd74a811a7b04c
Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Date: Mon Sep 9 16:23:04 2013 +0100
sna/hsw: Scanline waits require both DERRMR and forcewake
Oh my, bspec is missing a few details on how to perform a scanline wait
on Haswell. But by using the extra steps required for Ivybridge, we can
successfully send events from the scanout to the BCS ring. Sadly this
again means that to use vsync on Haswell requires preventing the GPU
from sleeping whilst it waits for the scanout to advance.
Reported-by: Dan Doel <<a href="mailto:dan.doel@gmail.com">dan.doel@gmail.com</a>>
Bugzilla: <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [hsw] WAIT_FOR_EVENT hangs (full screen vsync on pipe 1 with BCS)"
href="show_bug.cgi?id=69119">https://bugs.freedesktop.org/show_bug.cgi?id=69119</a>
Signed-off-by: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
That seemed to fix it for my test cases (windowed swaps on all 3 pipes), please
do reopen if it is still broken for you.</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>
</ul>
</body>
</html>