Displaylink Linux and double login

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A display link is connected to my Lenovo laptop which I use 2 Operate monitors. Under Linux 2 Packages needed (Arch: displaylink, house)

After installation I was able to do as requested 2 Operate displays, however, I always had to log on to the login screen 2 times sign up. To avoid double registration, page_flip must be deactivated. To do this, create the following file

/etc/X11/xorg.conf.d/20-displaylink.conf

with the following content:

Section "OutputClass"
    Identifier  "DisplayLink"
    match Driver "house"
    Driver      "mode setting"
    Option      "AccelMethod" "none"
    Option	"PageFlip" "false"
EndSection