<html>
<head>
<base href="https://bugs.freedesktop.org/">
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [DRM-INTEL] linux kernel dmesg-warn CPU pipe A FIFO underrun"
href="https://bugs.freedesktop.org/show_bug.cgi?id=111838">111838</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[DRM-INTEL] linux kernel dmesg-warn CPU pipe A FIFO underrun
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>x86 (IA32)
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>minor
</td>
</tr>
<tr>
<th>Priority</th>
<td>not set
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/Intel
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>atzlinux@yeah.net
</td>
</tr>
<tr>
<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>Created <span class=""><a href="attachment.cgi?id=145542" name="attach_145542" title="dmesg">attachment 145542</a> <a href="attachment.cgi?id=145542&action=edit" title="dmesg">[details]</a></span>
dmesg
On computer boot,the linux kernel dmesg has the following error info:
[ 4.477187] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU
pipe A FIFO underrun
[ 4.477272] [drm:intel_set_cpu_fifo_underrun_reporting [i915]] *ERROR* pipe
B underrun
[ 4.477348] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU
pipe B FIFO underrun
[ 4.477187] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU
pipe A FIFO underrun
[ 4.477272] [drm:intel_set_cpu_fifo_underrun_reporting [i915]] *ERROR* pipe
B underrun
[ 4.477348] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU
pipe B FIFO underrun
I had report this bug on Debian:
<a href="https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=941197">https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=941197</a>
-- system architecture: ("uname -m") i686
-- kernel version: ("uname -r") 4.19.0-6-686
4.19.0-6-686 #1 SMP Debian 4.19.67-2+deb10u1 (2019-09-20) i686 GNU/Linux
-- Linux distribution:Debian 10.1
-- Machine or mother board model:
dmidecode info about machine type:
BIOS Information
Vendor: Phoenix Technologies LTD
Version: R0042G9
Release Date: 01/19/2005
System Information
Manufacturer: Sony Corporation
Product Name: VGN-B99C
Version: C2004ZYP
Serial Number: 28194290-9106065
UUID: e7fb2880-4b65-11c6-8c2a-00014a075a9a</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the assignee for the bug.</li>
<li>You are on the CC list for the bug.</li>
<li>You are the QA Contact for the bug.</li>
</ul>
</body>
</html>