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<base href="https://bugs.freedesktop.org/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [DRI2][PRIME] display black window when enable GPU offloading"
href="https://bugs.freedesktop.org/show_bug.cgi?id=95069">95069</a>
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<th>Summary</th>
<td>[DRI2][PRIME] display black window when enable GPU offloading
</td>
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<th>Product</th>
<td>xorg
</td>
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<th>Version</th>
<td>unspecified
</td>
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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>normal
</td>
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<th>Priority</th>
<td>medium
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<th>Component</th>
<td>Driver/intel
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<th>Assignee</th>
<td>chris@chris-wilson.co.uk
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<th>Reporter</th>
<td>qiang.yu@amd.com
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=123154" name="attach_123154" title="Xorg log">attachment 123154</a> <a href="attachment.cgi?id=123154&action=edit" title="Xorg log">[details]</a></span>
Xorg log
Laptop: DELL
OS: Ubuntu 16.04
CPU + iGPU: Intel i5-6300U
dGPU: AMD R5 M255
Reproduce:
fresh install Ubuntu 16.04
$ DRI_PRIME=1 glxgears
the output window is black. change focus to other window will make
the window content.
But two situation works fine:
1. use modesetting DDX for intel iGPU
2. recompile Intel DDX with "--enable-debug=full"
GDB into DDX:
in sna_share_pixmap_backing(), priv->pinned is set, so return FALSE.
But when I step through sna_pixmap_move_to_gpu(), the priv->pinned is
not set. It seems some race condition happens.</pre>
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