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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 - Intel Broadwell intel_cpu_fifo_underrun_irq_handler"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94174">94174</a>
</td>
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<th>Summary</th>
<td>Intel Broadwell intel_cpu_fifo_underrun_irq_handler
</td>
</tr>
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<th>Product</th>
<td>DRI
</td>
</tr>
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<th>Version</th>
<td>XOrg git
</td>
</tr>
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
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<th>OS</th>
<td>Linux (All)
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>DRM/Intel
</td>
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
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<th>Reporter</th>
<td>a.titeica@navx.com
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>Kernel 4.5.0-rc4 x86_64
Laptop TOSHIBA SATELLITE Z30-B with Intel Broadwell: Intel(R) Core(TM) i5-5200U
CPU @ 2.20GHz
Error in the logs:
[drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe C FIFO
underrun
[drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO
underrun
[drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO
underrun
With 2 external monitors attached (HDMI and VGA) the VGA display goes blank for
a second and comes back.
A strange is that the VGA monitor is detected as eDP.
I will attach dmesg with 'drm.debug=0x1e log_buf_len=1M' on the kernel command
line, xrandr --verbose and Xorg.0.log.</pre>
</div>
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