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<base href="https://bugs.freedesktop.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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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 --- - [HD Graphics 4000] Garbage on screen on Samsung NP900X3E-A02"
href="https://bugs.freedesktop.org/show_bug.cgi?id=64332">64332</a>
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>[HD Graphics 4000] Garbage on screen on Samsung NP900X3E-A02
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Severity</th>
<td>major
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Reporter</th>
<td>urs-mailinglists@lampshade.ch
</td>
</tr>
<tr>
<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Version</th>
<td>XOrg CVS
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/Intel
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=78995" name="attach_78995" title="picture of the bug on X11">attachment 78995</a> <a href="attachment.cgi?id=78995&action=edit" title="picture of the bug on X11">[details]</a></span>
picture of the bug on X11
Chipset: IvyBridge Mobile
system architecture: x86_64
libdrm: 2.4.40
OpenGL version string: 3.0 Mesa 8.0.5
xorg-xserver: 2:1.12.4-6
intel module version 2.20.14
kernel version: 3.8-trunk-amd64
Linux distribution: Debian sid with kernel 3.8 from experimental
Machine: Samsung NP900X3E-A02
Display connector: laptop screen, embedded display port ?
Start the machine with X windows, display artifacts appear: I see long black
lines across the screen, looks to be at places with high contrast, like window
edges and textbox edges. When moving the window, the artifacts either move with
it or disappear. Strangely, if a line was present for long, it can "stay" on
the screen across reboots, being even visible in BIOS and in Windows 8 if I
reboot in the other OS. Turning the machine totally off and letting it like
that for a long time makes the artifact disappear.
This happens every time. See picture attached
Starting the machine with kernel option noreboot (and also noacpi) makes the
bug disappear. (Xorg starts using the FBDEV vesa driver)
See also the discussion here: <a href="https://01.org/linuxgraphics/node/84">https://01.org/linuxgraphics/node/84</a></pre>
</div>
</p>
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