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<base href="https://bugs.freedesktop.org/" />
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<th>Priority</th>
<td>medium
</td>
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<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - AMD LLANO repeated gpu lockups adn softresets"
href="https://bugs.freedesktop.org/show_bug.cgi?id=58115">58115</a>
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<th>Assignee</th>
<td>xorg-driver-ati@lists.x.org
</td>
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<th>Summary</th>
<td>AMD LLANO repeated gpu lockups adn softresets
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>xorg-team@lists.x.org
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr>
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<th>OS</th>
<td>Linux (All)
</td>
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<th>Reporter</th>
<td>kphillisjr@gmail.com
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<th>Hardware</th>
<td>x86-64 (AMD64)
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
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<th>Component</th>
<td>Driver/Radeon
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<th>Product</th>
<td>xorg
</td>
</tr></table>
<p>
<div>
<pre>When dealing multiple displays there's some chips that have a hard coded limit
that should never be exceeded. Currently there is probably very few protections
in code to prevent this, and this can ultimately lead to systems being
unbootable.
Test hardware:
Amd A6-3400m (hd6520G) w/ hd6650m dedicated
Linux Mint 13 w/ ubuntu xorg edgers installed.
Radeon driver from xorg edgers.
The test:
Connect 3 displays to an amd llano based pc.
start the machine.
Login
attempt to enable the all three panels (This should not be allowed to "work"
but it passes even though it should fail )
restart pc
attempt to login again ( At this step it should fail)
Please note that the a6-series chips most of the time can only handle two
displays at once, and if you force all three to go, it'll lead to gpu stalls.</pre>
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</p>
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