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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED NOTABUG - DisplayPort Cant's set 60hz refresh rate"
href="https://bugs.freedesktop.org/show_bug.cgi?id=89998#c3">Comment # 3</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED NOTABUG - DisplayPort Cant's set 60hz refresh rate"
href="https://bugs.freedesktop.org/show_bug.cgi?id=89998">bug 89998</a>
from <span class="vcard"><a class="email" href="mailto:tmadeira@gmail.com" title="Tiago Madeira <tmadeira@gmail.com>"> <span class="fn">Tiago Madeira</span></a>
</span></b>
<pre>@Marat, have you managed to solve this problem?
I'm having a similar issue with a Lenovo ThinkPad X240 (Intel HD Graphics 4400)
connected via DisplayPort to a Dell P2415Q monitor. The 3840x2160 30MHz and
35MHz modes work fine, but 60MHz gives a blank screen (so it's a little bit
different than yours) and dmesg reports:
[ 3235.577003] [drm:intel_set_cpu_fifo_underrun_reporting [i915]] *ERROR*
uncleared fifo underrun on pipe B
[ 3235.577018] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU
pipe B FIFO underrun
Running Kernel 4.0.4-2-ARCH #1 x86_64 (Arch Linux), but can try some version
from the Intel branch if that helps.</pre>
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