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<base href="https://bugs.freedesktop.org/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [RV610] Freeze when turning on an external monitor after resume from suspend"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94933">94933</a>
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<th>Summary</th>
<td>[RV610] Freeze when turning on an external monitor after resume from suspend
</td>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
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<th>OS</th>
<td>Linux (All)
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>DRM/Radeon
</td>
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<th>Assignee</th>
<td>dri-devel@lists.freedesktop.org
</td>
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<th>Reporter</th>
<td>nicolamori@aol.com
</td>
</tr></table>
<p>
<div>
<pre>I have a laptop with a Mobility Radeon HD3470 (RV610) and Plasma 5.6.2 as
desktop environment. After suspending to RAM and resuming, I experience a
system freeze when trying to switch to a dual monitor setup using an external
monitor connected to the VGA output. The dual monitor can be turned on without
problems before the suspend/resume cycle.
I don't know which logs/information could be useful to diagnose the problem, so
I will provide it on demand. Thanks.
System details
--------------
VGA: Mobility Radeon HD3470 (RV610)
OS: ArchLinux 64 bit, kernel 4.4.7, xf86-video-ati 7.7.0
Desktop: Plasma 5.6.2 (with KF5 5.21 and Qt 5.6.0)
Steps to reproduce
------------------
- Start the system with only the laptop panel turned on
- Suspend to RAM and then resume
- Connect an external monitor
- Enable the external monitor with xrandr or with the KCM module (System
settings -> Display and Monitor -> Display configuration)</pre>
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</p>
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