[Bug 1875015] Re: Displaylink is extremely slow in Xorg sessions

[Anas Bouzid]

After updating nvidia to 525.78.01 the lag reappears, the external
monitor is extremly slow again. I've tries purging nvidia* and xserver-
xorg-video-amdgpu but no luck.

-- 
You received this bug notification because you are a member of Ubuntu
Sponsors Team, which is subscribed to the bug report.
https://bugs.launchpad.net/bugs/1875015

Title:
  Displaylink is extremely slow in Xorg sessions

Status in Nouveau Xorg driver:
  New
Status in OEM Priority Project:
  New
Status in xf86-video-amd:
  Fix Released
Status in X.Org X server:
  Fix Released
Status in xorg-server package in Ubuntu:
  Fix Released
Status in xserver-xorg-video-amdgpu package in Ubuntu:
  Fix Released
Status in xserver-xorg-video-nouveau package in Ubuntu:
  In Progress
Status in xorg-server source package in Focal:
  Fix Released
Status in xorg-server source package in Hirsute:
  Won't Fix
Status in xorg-server source package in Impish:
  Fix Released
Status in xorg-server source package in Jammy:
  Fix Released
Status in xserver-xorg-video-amdgpu source package in Jammy:
  New
Status in xserver-xorg-video-nouveau source package in Jammy:
  New

Bug description:
  Using ubuntu 20.04 on displaylink docking with external monitor is
  totally slow, unusable. The GUI responds very slow, if you click, the
  command of the click goes on after about 3 seconds... if you type, all
  the letters are with the same lag, so it is totally unusable.

  Was using displaylink without any problem on 19.10 until yesterday, when I upgraded to 20.04. 
  It is terrific.

  If i plug out the usb for the displaylink docking station, than the
  speed is back, and the system is ok, if I connect it to the docking
  station again, everything extremely slow again.

  Please investigate this asap, as it is unusable on displaylink docking
  stations.

To manage notifications about this bug go to:
https://bugs.launchpad.net/nouveau/+bug/1875015/+subscriptions