Public bug reported:

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.

** Affects: xorg-server (Ubuntu)
     Importance: Undecided
         Status: New

** Description changed:

  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 aprpeciated.
+ Any help would be appreciated.

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

Title:
  No image on KVM switch

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