Upgraded from ubuntu 18.04 to 20.04 today and was happy that DisplayLink finally started to work. Well, that is until I realised how totally unusable it was! Exactly the same experience as the other posters. I'm using an Acer Aspire V5 with a DisplayLink D3100 device and dual monitors.
Then I noticed something very interesting. If I also plugged in a monitor to the VGA output, everything works perfectly. As soon as I unplug the VGA monitor, it is unusable again. While not ideal, this is a reasonable work-around for me until the bug is fixed.
The down-side of this workaround for me is that the VGA output is plugged into a VGA input of one of my monitors. So although ubuntu thinks I have 3 monitors, there are only two. This means if I launch an app and it goes to the VGA output, I can't see it. It takes a bit of fiddling around to drag it to the DisplayLink output.
Upgraded from ubuntu 18.04 to 20.04 today and was happy that DisplayLink finally started to work. Well, that is until I realised how totally unusable it was! Exactly the same experience as the other posters. I'm using an Acer Aspire V5 with a DisplayLink D3100 device and dual monitors.
Then I noticed something very interesting. If I also plugged in a monitor to the VGA output, everything works perfectly. As soon as I unplug the VGA monitor, it is unusable again. While not ideal, this is a reasonable work-around for me until the bug is fixed.
The down-side of this workaround for me is that the VGA output is plugged into a VGA input of one of my monitors. So although ubuntu thinks I have 3 monitors, there are only two. This means if I launch an app and it goes to the VGA output, I can't see it. It takes a bit of fiddling around to drag it to the DisplayLink output.
Looking forward to this bug being fixed.