I have this issue on 21.04 Thinkpad P1 when I use DP on the dock and turn the laptop monitor off.
The workaround for me was adding LIBGL_DRI3_DISABLE=true to the /etc/environment and reboot. I have nvidia card and read this workaround for an HDMI issue somewhere on the Nvidia forums, But it seems like it also solved my problem. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1875015 Title: Ubuntu 20.04 and Displaylink is extremely slow To manage notifications about this bug go to: https://bugs.launchpad.net/xorg-server/+bug/1875015/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
