[Bug 103029] Reoccuring CPU pipe [A|B] FIFO underrun followed by corrupt external monitor

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103029

--- Comment #4 from Martin Weinberg <martin.weinberg at comcast.net> ---
I am still seeing the error messages logged as of 4.14.16.  The weird "loss of
sync" corruption on the external monitor does seem to depend on the kernel and
I have not seen them as of 4.14.16.  My work around has been to undock and
redock.  That seems to clear the graphics issue without a reboot.

In case I wasn't clear, this never happens on the internal LCD.  This is a
Lenovo T440s on a Lenovo Ultradock with an HDMI 1080p monitor.  I really like
the dock concept, but the MST hub seems to not play nice under linux.  Took
years for the HDMI audio pass through to be supported.

Kernel: I am trying 4.15.1 now.  I just keep trying the new kernels and hope
for the best.

I am willing to do bisection, if you folks are willing to give me some explicit
instructions, but I'm very busy for the next few weeks, so I won't be able to
get to that right away.

I am also willing to try the drm-tip (much easier than bisection in the short
time frame).

-- 
You are receiving this mail because:
You are the assignee for the bug.
You are on the CC list for the bug.
You are the QA Contact for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20180205/a8721c2f/attachment.html>