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<th>Priority</th>
<td>medium
</td>
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - In a tri-head configuration on a laptop, one of the external screens is not repainted"
href="https://bugs.freedesktop.org/show_bug.cgi?id=78293">78293</a>
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<th>Assignee</th>
<td>chris@chris-wilson.co.uk
</td>
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<th>Summary</th>
<td>In a tri-head configuration on a laptop, one of the external screens is not repainted
</td>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
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<th>OS</th>
<td>All
</td>
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<th>Reporter</th>
<td>mail@kirill-mueller.de
</td>
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<th>Hardware</th>
<td>Other
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
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<th>Version</th>
<td>git
</td>
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<th>Component</th>
<td>Driver/intel
</td>
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<th>Product</th>
<td>xorg
</td>
</tr></table>
<p>
<div>
<pre>This is a relaunch of <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - intel-virtual-output: one remote head fails to update"
href="show_bug.cgi?id=76271">https://bugs.freedesktop.org/show_bug.cgi?id=76271</a> .
Ubuntu 13.10, Intel video driver and i-v-o from Git (ef178f7). One of my two
external screens is not repainted and does not even show the cursor. In "perf
top", heavy usage is shown for nvidia_drv.so and [drm] when running glxgears:
35.94% [drm] [k] drm_clflush_page
9.90% nvidia_drv.so [.] 0x000000000007f0a4
8.88% [kernel] [k] mutex_spin_on_owner
4.39% [kernel] [k] __sg_page_iter_next.part.9
3.00% i965_dri.so [.] 0x0000000000032a36
2.40% [kernel] [k] __sg_page_iter_next
2.14% [kernel] [k] mspin_lock
2.04% intel_drv.so [.]
memcpy_from_tiled_x__swizzle_9_
0.87% [kernel] [k] __ticket_spin_lock
0.87% perf [.] 0x000000000004bb42
0.81% libxul.so [.] 0x00000000018f56ee
0.62% Xorg [.] 0x000000000013d3b8
0.59% libdrm_intel.so.1.0.0 [.] 0x00000000000066a2
0.58% libdricore9.2.1.so.1.0.0 [.] 0x0000000000149852
0.52% [i915] [k] ivybridge_irq_handler
0.50% [drm] [k] drm_clflush_sg
No heavy lag anymore.
Things to check:
- Stock video driver (I think this works, but will re-check)
- Setting Option "AllowSHMPixmaps" "true" in /etc/bumblebee/xorg.conf.nvidia
(will check)
- Attach debug output from i-v-o
- ?</pre>
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