** Changed in: xorg-server
       Status: Unknown => Confirmed

** Changed in: xorg-server
   Importance: Unknown => High

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https://bugs.launchpad.net/bugs/1714749

Title:
  Screen tearing with when PSR is enabled

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Triaged
Status in xorg-server package in Ubuntu:
  New

Bug description:
  I've been experiencing pretty bad screen tearing on 17.10 on my XPS 13
  9560 with Kaby Lake. I did not experience this on 16.04/16.10 and IIRC
  not even on 17.04.

  After a lot of hit and trial, I was able to fix the issue completely
  by disabling Intel PSR mode in Grub config.

  Change `i915.enable_psr=1` to `i915.enable_psr=0` in
  `/boot/grub/grub.cfg` fixed the problem for me but I think this
  disables some power saving features.

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