<html>
<head>
<base href="https://bugs.freedesktop.org/" />
</head>
<body><span class="vcard"><a class="email" href="mailto:huax.lu@intel.com" title="lu hua <huax.lu@intel.com>"> <span class="fn">lu hua</span></a>
</span> changed
<a class="bz_bug_link
bz_status_NEW "
title="NEW - [BSW]igt/kms_setmode sporadically causes *ERROR* CPU pipe C FIFO underrun"
href="https://bugs.freedesktop.org/show_bug.cgi?id=85906">bug 85906</a>
<br>
<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Status</td>
<td>NEEDINFO
</td>
<td>NEW
</td>
</tr></table>
<p>
<div>
<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [BSW]igt/kms_setmode sporadically causes *ERROR* CPU pipe C FIFO underrun"
href="https://bugs.freedesktop.org/show_bug.cgi?id=85906#c2">Comment # 2</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [BSW]igt/kms_setmode sporadically causes *ERROR* CPU pipe C FIFO underrun"
href="https://bugs.freedesktop.org/show_bug.cgi?id=85906">bug 85906</a>
from <span class="vcard"><a class="email" href="mailto:huax.lu@intel.com" title="lu hua <huax.lu@intel.com>"> <span class="fn">lu hua</span></a>
</span></b>
<pre>root@x-bsw08:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# ./kms_setmode
--run-subtest clone-exclusive-crtc
IGT-Version: 1.9-g9846e7f (x86_64) (Linux:
3.19.0_drm-intel-nightly_dbd79c_20150213+ x86_64)
Testing: clone-exclusive-crtc 2 connector combinations
Test id#1 CRTC count 2
CRTC[20] [Pipe A] Mode: 1920x1080@60Hz Connectors: eDP-1[41]
CRTC[25] [Pipe B] Mode: 640x480@60Hz Connectors: HDMI-A-1[34] (NC)
Test id#2 CRTC count 2
CRTC[25] [Pipe B] Mode: 1920x1080@60Hz Connectors: eDP-1[41]
CRTC[20] [Pipe A] Mode: 640x480@60Hz Connectors: HDMI-A-1[34] (NC)
Test id#3 CRTC count 2
CRTC[20] [Pipe A] Mode: 1920x1080@60Hz Connectors: eDP-1[41]
CRTC[30] [Pipe C] Mode: 640x480@60Hz Connectors: HDMI-A-2[47] (NC)
Test id#4 CRTC count 2
CRTC[25] [Pipe B] Mode: 1920x1080@60Hz Connectors: eDP-1[41]
CRTC[30] [Pipe C] Mode: 640x480@60Hz Connectors: HDMI-A-2[47] (NC)
Test id#5 CRTC count 2
CRTC[20] [Pipe A] Mode: 640x480@60Hz Connectors: HDMI-A-1[34] (NC)
CRTC[30] [Pipe C] Mode: 640x480@60Hz Connectors: HDMI-A-2[47] (NC)
Test id#6 CRTC count 2
CRTC[25] [Pipe B] Mode: 640x480@60Hz Connectors: HDMI-A-1[34] (NC)
CRTC[30] [Pipe C] Mode: 640x480@60Hz Connectors: HDMI-A-2[47] (NC)
Testing: clone-exclusive-crtc 3 connector combinations
Test id#7 CRTC count 3
CRTC[20] [Pipe A] Mode: 1920x1080@60Hz Connectors: eDP-1[41]
CRTC[25] [Pipe B] Mode: 640x480@60Hz Connectors: HDMI-A-1[34] (NC)
CRTC[30] [Pipe C] Mode: 640x480@60Hz Connectors: HDMI-A-2[47] (NC)
Test id#8 CRTC count 3
CRTC[25] [Pipe B] Mode: 1920x1080@60Hz Connectors: eDP-1[41]
CRTC[20] [Pipe A] Mode: 640x480@60Hz Connectors: HDMI-A-1[34] (NC)
CRTC[30] [Pipe C] Mode: 640x480@60Hz Connectors: HDMI-A-2[47] (NC)
Subtest clone-exclusive-crtc: SUCCESS (43.524s)
root@x-bsw08:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# dmesg -r|egrep
"<[1-4]>"|grep drm
<3>[ 341.728152] [drm:i9xx_check_fifo_underruns [i915]] *ERROR* pipe B
underrun
<3>[ 341.744854] [drm:valleyview_pipestat_irq_handler [i915]] *ERROR* CPU pipe
B FIFO underrun
<3>[ 342.214618] [drm:valleyview_pipestat_irq_handler [i915]] *ERROR* CPU pipe
A FIFO underrun
<3>[ 342.214653] [drm:valleyview_pipestat_irq_handler [i915]] *ERROR* CPU pipe
C FIFO underrun</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the QA Contact for the bug.</li>
<li>You are on the CC list for the bug.</li>
<li>You are the assignee for the bug.</li>
</ul>
</body>
</html>