Support Ubuntu 20.04 LTS (Focal Fossa)

[Tiberius]

I recently installed ubuntu 20.04. (fresh install)

I use displaylink D3100 to connect thinkpad t420 with intel graphics to view on external FHD monitor. I use X11

When used only on external monitor it lags a lot it's not usable at all. When i use inbuilt display , mirror, extend works ok



Same configuration worked flawless on ubuntu 18.04


PS : tried but same result
make /usr/share/X11/xorg.conf.d/20-displaylink.conf

Section "Device"
Identifier "DisplayLink"
Driver "modesetting"
Option "PageFlip" "false"
EndSection