<html>
<head>
<base href="https://bugs.freedesktop.org/">
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [hsw] i915 resume latency 909 ms"
href="https://bugs.freedesktop.org/show_bug.cgi?id=100540">100540</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[hsw] i915 resume latency 909 ms
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>XOrg git
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/Intel
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>jani.nikula@intel.com
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>Moving from <a href="https://bugzilla.kernel.org/show_bug.cgi?id=76211">https://bugzilla.kernel.org/show_bug.cgi?id=76211</a> reported by Len
Brown.
The last observation there was:
This problem still exists in Linux-4.8.0, though the delay
on this machine is now 909 ms, rather than 1,200 ms.
Attached, please find the analzye_suspend.py output as run
on the same laptop as above, installed with Ubuntu 16.10
and its 4.8.0-22-generic kernel.
Curiously, i915 resume invokes intel_hdmi_detect FOUR TIMES --
twice in a kthread, and again twice in-line. This costs 160ms
each time it is invoked.</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>