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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - TearFree is lost after switching output monitors"
href="https://bugs.freedesktop.org/show_bug.cgi?id=96180">96180</a>
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<th>Summary</th>
<td>TearFree is lost after switching output monitors
</td>
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<th>Product</th>
<td>xorg
</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>Driver/intel
</td>
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<th>Assignee</th>
<td>chris@chris-wilson.co.uk
</td>
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<th>Reporter</th>
<td>mkj@gotu.dk
</td>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
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<pre>I'm running latest Debian Stretch on a ThinkPad X1 Carbon 20A7, sometimes
attached to a dock.
When detaching or attaching my dock with a DP monitor attached, my video output
gets teared. I saw this in the attached Xorg.0.log:
[ 807.026] (II) intel(0): switch to mode <a href="mailto:2560x1440@60.0">2560x1440@60.0</a> on DP2-2 using pipe
1, position (0, 0), rotation normal, reflection none
[ 1123.133] (EE) intel(0): Failed to prepare CRTC for page flipping, disabling
TearFree
[ 1123.690] (II) intel(0): switch to mode <a href="mailto:2560x1440@60.0">2560x1440@60.0</a> on eDP1 using pipe 0,
position (0, 0), rotation normal, reflection none
[ 1123.986] (EE) intel(0): Failed to prepare CRTC for page flipping, disabling
TearFree
[ 1123.991] (II) intel(0): Disabled output DP2-1
[ 1123.991] (II) intel(0): Disabled output DP2-2
[ 1123.991] (II) intel(0): Disabled output DP2-3
[ 11204.479] (II) intel(0): Enabled output DP2-1
[ 11204.479] (II) intel(0): Enabled output DP2-2
[ 11204.479] (II) intel(0): Enabled output DP2-3
Any ideas?</pre>
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