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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - unable to use nvidia gpu after suspend"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102648">102648</a>
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<th>Summary</th>
<td>unable to use nvidia gpu after suspend
</td>
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<th>Product</th>
<td>xorg
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<th>Version</th>
<td>unspecified
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<th>Hardware</th>
<td>x86-64 (AMD64)
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<th>OS</th>
<td>Linux (All)
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>critical
</td>
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<th>Priority</th>
<td>medium
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<th>Component</th>
<td>Driver/nouveau
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<th>Assignee</th>
<td>nouveau@lists.freedesktop.org
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<th>Reporter</th>
<td>razorsis100@gmail.com
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<th>QA Contact</th>
<td>xorg-team@lists.x.org
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=134145" name="attach_134145" title="dmesg with the problem before and after suspend">attachment 134145</a> <a href="attachment.cgi?id=134145&action=edit" title="dmesg with the problem before and after suspend">[details]</a></span>
dmesg with the problem before and after suspend
Os: Arch X86_64 Updated regularly
System : Notebook Asus X556UR
Tried with bumblebee nvidia:
Works perefectly after boot
but after a suspend/wake optirun output: Failed to initialize secondary GPU
only way to make it work again is:
reboot or pci bus remove/rescan(doesn't work sometimes)
So I consulted with Lekensteyn and did numerous testings
checked nvidia card powermanagement, parent bus power mangement
PM is on for both but it just doesn't work after suspend/wake
switched to nouveau (removed bumblebee nvidia)
tested with lspci, no errors after boot
but after suspend/wake: DRM: failed to idle channel 0 [DRM]
So he suggested to file a bug for nouveau with kernel log and acpidump</pre>
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