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<base href="https://bugs.freedesktop.org/" />
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<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [Baytrail-M] eDP responsiveness issues of slow i915 module init , slow resume time and slow suspend time"
href="https://bugs.freedesktop.org/show_bug.cgi?id=69250">69250</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>[Baytrail-M] eDP responsiveness issues of slow i915 module init , slow resume time and slow suspend time
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Severity</th>
<td>major
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Reporter</th>
<td>yangweix.shui@intel.com
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/Intel
</td>
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<th>Product</th>
<td>DRI
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=85690" name="attach_85690" title="dmesg: 3 response time">attachment 85690</a> <a href="attachment.cgi?id=85690&action=edit" title="dmesg: 3 response time">[details]</a></span>
dmesg: 3 response time
Environment:
--------------------
Kernel: (drm-intel-next-queued)6c4a8962a4a078cacfc8eb5d4bd79f6343b8cd7a
Author: Jesse Barnes <<a href="mailto:jbarnes@virtuousgeek.org">jbarnes@virtuousgeek.org</a>>
Date: Tue Sep 10 14:54:42 2013 -0700
drm/i915/vlv: re-enable hotplug detect based probing on VLV/BYT
lspci:
--------------------
00:02.0 VGA compatible controller: Intel Corporation ValleyView Gen7 (rev 0a)
Description:
--------------------
On Baytrail, 3 response time of i915 init,suspend and resume are quite larger
than expected. I list the result below:
Acquire initcall time:
1661.503 msecs
Acquire suspend time:
831.419 msecs
Acquire resume time:
9375.159 msecs
Another IVB mobile(Apple MacBook Pro) 3 response time of eDP:
Acquire initcall time:
2465.873 msecs
Acquire suspend time:
1304.496 msecs
Acquire resume time:
1036.836 msecs
Steps:
--------------------
1. booting with kernel command: "initcall_debug drm.debug=0xe"
2. dmesg | grep -i -e "i915_init|PM:.*complete|00:02.0+"
3. calculate related times</pre>
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