[Bug 1816269] Re: No image on KVM switch

[ 135.089830] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
and then Thunderbolt hotplug messages.

Please file an upstream bug at https://bugs.freedesktop.org/
Product: DRI
Component: DRM/Intel

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https://bugs.launchpad.net/bugs/1816269

Title:
No image on KVM switch

Status in linux package in Ubuntu:
Incomplete

Bug description:
Hi all,

I have a NUC7i7BNH with the latest BIOS (0062) running Ubuntu 18.04
(uname -r = 4.18.0-15-generic). I have the NUC connected via USB-C to
a dual DisplayPort adapter, to an Avocent SV340D KVM.

If I have the KVM on the switch for the NUC, everything works great.
If I switch the KVM to another channel, and then switch back to the
NUC, I only get black screens. The only solution is to hard reboot the
NUC.

Any help would be appreciated.

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