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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [IVB] xrandr eDP1 scale-from hangs with external displays"
href="https://bugs.freedesktop.org/show_bug.cgi?id=95360#c5">Comment # 5</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [IVB] xrandr eDP1 scale-from hangs with external displays"
href="https://bugs.freedesktop.org/show_bug.cgi?id=95360">bug 95360</a>
from <span class="vcard"><a class="email" href="mailto:chris.bainbridge@gmail.com" title="Chris Bainbridge <chris.bainbridge@gmail.com>"> <span class="fn">Chris Bainbridge</span></a>
</span></b>
<pre>Created <span class=""><a href="attachment.cgi?id=123827" name="attach_123827" title="dmesg-drm-full">attachment 123827</a> <a href="attachment.cgi?id=123827&action=edit" title="dmesg-drm-full">[details]</a></span>
dmesg-drm-full
Corresponding dmesg log
`xrandr --output eDP1 --mode 2560x1600 --scale-from 1280x800` executed at [
875.16 ]
After that logged errors are:
[ 875.927050] [drm:intel_check_cpu_fifo_underruns] *ERROR* fifo underrun on
pipe B
[ 875.927060] [drm:intel_check_cpu_fifo_underruns] *ERROR* fifo underrun on
pipe C
[ 875.927069] [drm:intel_check_pch_fifo_underruns] *ERROR* pch fifo underrun
on pch transcoder B
[ 875.937153] [drm:intel_check_cpu_fifo_underruns] *ERROR* fifo underrun on
pipe B
[ 875.937156] [drm:intel_check_cpu_fifo_underruns] *ERROR* fifo underrun on
pipe C
[ 875.937165] [drm:intel_check_pch_fifo_underruns] *ERROR* pch fifo underrun
on pch transcoder B
[ 875.950244] [drm:intel_check_cpu_fifo_underruns] *ERROR* fifo underrun on
pipe C
[ 876.503832] [drm:intel_check_cpu_fifo_underruns] *ERROR* fifo underrun on
pipe B
[ 876.503836] [drm:intel_check_cpu_fifo_underruns] *ERROR* fifo underrun on
pipe C
[ 876.503844] [drm:intel_check_pch_fifo_underruns] *ERROR* pch fifo underrun
on pch transcoder B
[ 876.546722] [drm:intel_check_cpu_fifo_underruns] *ERROR* fifo underrun on
pipe B
[ 876.546726] [drm:intel_check_cpu_fifo_underruns] *ERROR* fifo underrun on
pipe C
[ 876.546734] [drm:intel_check_pch_fifo_underruns] *ERROR* pch fifo underrun
on pch transcoder B
[ 876.546740] [drm:intel_check_pch_fifo_underruns] *ERROR* pch fifo underrun
on pch transcoder C</pre>
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