ubuntu 20.04 + thinkpad t420 intel
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
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