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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Occasionally random uninitialised memory appears to be dumped when applications fullscreen or the VT is switched"
href="https://bugs.freedesktop.org/show_bug.cgi?id=106850">106850</a>
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<th>Summary</th>
<td>Occasionally random uninitialised memory appears to be dumped when applications fullscreen or the VT is switched
</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/Intel
</td>
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<th>Reporter</th>
<td>fdbugs@fratti.ch
</td>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=140069" name="attach_140069" title="the bug occurring on tty2">attachment 140069</a> <a href="attachment.cgi?id=140069&action=edit" title="the bug occurring on tty2">[details]</a></span>
the bug occurring on tty2
Occasionally random uninitialised memory appears to be dumped when applications
fullscreen or the VT is switched
Occasionally, a pattern that looks like uninitialised memory is vomited on top
of the screen, usually when an application enters fullscreen, or a VT switch is
done.
Moving the mouse makes the pattern disappear in a Xorg VT, but not on the tty.
The regular look of the pattern makes me think that this is some area of
possibly kernel memory that is being dumped onto the framebuffer. It also
appears on top of everything.
Steps to reproduce:
1. fullscreen mpv with a video playing a bunch, or switch VTs a bunch
2. notice how the corruption disappears when the mouse cursor is moved
Occurrence with fullscreening mpv appears to happen in bursts and then not at
all for a while, which is why it's hard to put a number on the tries you need
to reproduce it.
✓ fratti@archbook ~ $ uname -m
x86_64
✓ fratti@archbook ~ $ uname -r
4.16.13-2-ARCH
Distribution: Arch Linux
Machine: Tuxedo InfinityBook 13" with Intel Corporation HD Graphics 620 (rev
02)
Display connector: eDP</pre>
</div>
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