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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [SKL] [drm:intel_cpu_fifo_underrun_irq_handler [i915]]*ERROR* CPU pipe x FIFO underrun"
href="https://bugs.freedesktop.org/show_bug.cgi?id=100233#c7">Comment # 7</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [SKL] [drm:intel_cpu_fifo_underrun_irq_handler [i915]]*ERROR* CPU pipe x FIFO underrun"
href="https://bugs.freedesktop.org/show_bug.cgi?id=100233">bug 100233</a>
from <span class="vcard"><a class="email" href="mailto:maria.g.perez.ibarra@intel.com" title="maria guadalupe <maria.g.perez.ibarra@intel.com>"> <span class="fn">maria guadalupe</span></a>
</span></b>
<pre>this test is passing with the next configuration
Steps:
=====
xrandr --output <output> --rotate normal,inverted,left,right
Software
======================================
kernel version : 4.12.0-rc4-drm-tip-ww24-commit-4f89fbd+
architecture : x86_64
os version : Ubuntu 17.04
os codename : zesty
kernel driver : i915
bios revision : 1.0
======================================
Graphic drivers
======================================
modesetting : modesetting_drv.so
xorg-xserver : 1.19.3
libdrm : 2.4.81
vaapi (intel-driver) : Intel i965 driver for Intel(R) Skylake - 1.7.3
cairo : 1.14.8
xserver : X.Org X Server 1.19.99.1
intel-gpu-tools (tag) : intel-gpu-tools-1.18-211-g00ce341b
intel-gpu-tools (commit) : 00ce341b
======================================
Hardware
======================================
platform : SKL
motherboard model : Inspiron15-7568
motherboard id : 02HK88
form factor : Laptop
manufacturer : DellInc.
cpu family : Core i7
cpu family id : 6
cpu information : Intel(R) Core(TM) i7-6500U CPU @ 2.50GHz
gpu card : Intel Corporation HD Graphics 520 (rev 07)
(prog-if 00 [VGA controller])
memory ram : 7.71 GB
max memory ram : 8 GB
cpu thread : 4
cpu core : 2
cpu model : 78
cpu stepping : 3
signature : Type 0, Family 6, Model 78, Stepping 3
hard drive : 931GiB (1TB)
current cd clock frequency : 337500 kHz
maximum cd clock frequency : 675000 kHz
displays connected : eDP-1 HDMI-A-1
======================================
Firmware
======================================
dmc fw loaded : yes
dmc version : 1.26
======================================
kernel parameters
======================================
quiet splash fastboot drm.debug=0xe</pre>
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