<html>
<head>
<base href="https://bugs.freedesktop.org/" />
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Running EGL demos on DRM from mesa-demos causes a corrupted output on NV50"
href="https://bugs.freedesktop.org/show_bug.cgi?id=55294">55294</a>
</td>
</tr>
<tr>
<th>Assignee</th>
<td>nouveau@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>Running EGL demos on DRM from mesa-demos causes a corrupted output on NV50
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>xorg-team@lists.x.org
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Reporter</th>
<td>lubosz@gmail.com
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Version</th>
<td>git
</td>
</tr>
<tr>
<th>Component</th>
<td>Driver/nouveau
</td>
</tr>
<tr>
<th>Product</th>
<td>xorg
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=67649" name="attach_67649" title="kernel log with nouveau.reg_debug=0x600">attachment 67649</a> <a href="attachment.cgi?id=67649&action=edit" title="kernel log with nouveau.reg_debug=0x600">[details]</a></span>
kernel log with nouveau.reg_debug=0x600
When I try to run the mesa demos on the EGL/DRM backend I get a corrupted
screen.
You can find the demos here:
<a href="http://cgit.freedesktop.org/mesa/demos/tree/src/egl/opengl">http://cgit.freedesktop.org/mesa/demos/tree/src/egl/opengl</a>
The binaries for the EGL/DRM backend have a "_screen" suffix.
The demos are using eglut with the eglut_screen/drm backend.
The following kernel errors are printed:
[drm] nouveau 0000:01:00.0: EvoCh 0 Mthd 0x086c Data 0x00005564 (0x0084 0x04)
[drm] nouveau 0000:01:00.0: EvoCh 1 Mthd 0x080c Data 0x00005564 (0x0084 0x04)
You can find a screenshot and an kernel log with the "nouveau.reg_debug=0x600"
flag in the attachment.
Kernel 3.6.0 RC5 on NV50.
A similar kernel error can be found in this bug:
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED INVALID - dmesg error: [drm] nouveau 0000:02:00.0: EvoCh 0 Mthd 0x0000 Data 0x00000400 (0x0002 0x01)"
href="show_bug.cgi?id=27483">https://bugs.freedesktop.org/show_bug.cgi?id=27483</a></pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the assignee for the bug.</li>
</ul>
</body>
</html>