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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 - [IVB DP] FIFO underrun when trying to set a high display mode"
href="https://bugs.freedesktop.org/show_bug.cgi?id=85621">85621</a>
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<th>Summary</th>
<td>[IVB DP] FIFO underrun when trying to set a high display mode
</td>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>All
</td>
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<th>OS</th>
<td>Linux (All)
</td>
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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
</td>
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<th>Component</th>
<td>DRM/Intel
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<th>Reporter</th>
<td>anssi@mageia.org
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=108650" name="attach_108650" title="Dmesg with drm-intel-nightly, drm.debug=0x06, modeset at 100sec">attachment 108650</a> <a href="attachment.cgi?id=108650&action=edit" title="Dmesg with drm-intel-nightly, drm.debug=0x06, modeset at 100sec">[details]</a></span>
Dmesg with drm-intel-nightly, drm.debug=0x06, modeset at 100sec
When trying to set <a href="mailto:3440x1440@59.94">3440x1440@59.94</a> on a DP monitor, I get the following
messages:
[ 494.659559] [drm:ivybridge_set_fifo_underrun_reporting] *ERROR* uncleared
fifo underrun on pipe A
[ 494.659562] [drm:ivb_err_int_handler] *ERROR* Pipe A FIFO underrun
[ 494.659571] [drm:cpt_set_fifo_underrun_reporting] *ERROR* uncleared pch fifo
underrun on pch transcoder A
[ 494.659572] [drm:cpt_serr_int_handler] *ERROR* PCH transcoder A FIFO
underrun
and the screen stays blank until I switch back to e.g. <a href="mailto:3440x1440@29.97">3440x1440@29.97</a>.
This happens with stable 3.17 and with current drm-intel-nightly:
2014y-10m-29d-08h-35m-03s.
Mainboard: ASUS MAXIMUS V GENE, latest BIOS
GPU: 00:02.0 VGA compatible controller [0300]: Intel Corporation Xeon E3-1200
v2/3rd Gen Core processor Graphics Controller [8086:0162] (rev 09)
Attached dmesg with drm.debug=0x06 on drm-intel-nightly, reg dump with a
working and non-working mode, vbios dump, Xorg.log, and xrandr --verbose.
In the dmesg and Xorg.log, the output is set to <a href="mailto:3440x1440@59.94">3440x1440@59.94</a> at 100sec, and
to <a href="mailto:3440x1440@29.97">3440x1440@29.97</a> at 115sec.</pre>
</div>
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