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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>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - garbage on screen after gdm VT switch"
href="https://bugs.freedesktop.org/show_bug.cgi?id=90406">90406</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>garbage on screen after gdm VT switch
</td>
</tr>
<tr>
<th>Product</th>
<td>xorg
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
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<th>OS</th>
<td>Linux (All)
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>medium
</td>
</tr>
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<th>Component</th>
<td>Driver/Radeon
</td>
</tr>
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<th>Assignee</th>
<td>xorg-driver-ati@lists.x.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>grawity@gmail.com
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>xorg-team@lists.x.org
</td>
</tr></table>
<p>
<div>
<pre>GNOME's gdm 3.16 uses separate VTs for the login screen & user session.
Somehow, when it switches the VTs, garbage is displayed on screen for a short
while (instead of the expected gray gdm texture). It goes away as soon as
gnome-shell begins its launch animation.
At the same time, I get this in dmesg:
[ 1294.609195] radeon 0000:01:00.0: evergreen_cs_track_validate_texture:851
texture bo too small (layer size 4325376, offset 0, max layer 1, depth 1, bo
size 4227072) (1408 768)
[ 1294.609247] [drm:radeon_cs_ioctl [radeon]] *ERROR* Invalid command stream !
Specifically, the "garbage" appears to be uninitialized memory, since after
soft reboot I can still see shredded parts of my previous session. (Very
similar to #72979, even though that one is for nouveau and I use radeon.)
screen: LVDS at 1366x768
kernel 4.0, 4.1~rc3
gdm 3.16.1
xorg-server 1.17.1
xf86-video-ati 7.5.0</pre>
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