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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [HD Graphics 3000] [SNA] TearFree option ineffective after screensaver, screen power-off"
href="https://bugs.freedesktop.org/show_bug.cgi?id=93446">93446</a>
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<th>Summary</th>
<td>[HD Graphics 3000] [SNA] TearFree option ineffective after screensaver, screen power-off
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<th>Product</th>
<td>xorg
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<th>Version</th>
<td>unspecified
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<th>Hardware</th>
<td>x86-64 (AMD64)
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<th>OS</th>
<td>Linux (All)
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>normal
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<th>Priority</th>
<td>medium
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<th>Component</th>
<td>Driver/intel
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<th>Assignee</th>
<td>chris@chris-wilson.co.uk
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<th>Reporter</th>
<td>phillipedison1891@gmail.com
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=120590" name="attach_120590" title="Contains Dmesg contents (with drm.debug=0x06) and Xorg log">attachment 120590</a> <a href="attachment.cgi?id=120590&action=edit" title="Contains Dmesg contents (with drm.debug=0x06) and Xorg log">[details]</a></span>
Contains Dmesg contents (with drm.debug=0x06) and Xorg log
My Samsung laptop screen experiences tearing when using SNA acceleration in
Ubuntu 15.10. Setting "TearFree" to "true" in the X configuration fixes
this... but when certain things happen, the tearing comes back, and the only
way to stop it is to log out and log back in, which restarts the X server. The
aforementioned certain things are:
* mate-screensaver is activated
* Screen powers off after a period of time, per Ubuntu power settings
Activating the MATE screensave alone doesn't break it, and neither does just
letting the screen power off. *Both* have to happen to break the TearFree.
I have attached a tarball containing both the dmesg contents (with drm debug
lever 0x06) and the X log.
Best wishes,
Phillip</pre>
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