Same problem here, ThinkPad T490 with 20.04 with "ThinkPad Hybrid USB-C with USB-A Dock" model DUD9011D1, with DisplayLink 5.3.1 drivers. No discrete GPU, just the Intel UHD graphics "Device: Mesa Intel(R) UHD Graphics (CML GT2) (0x9b41)"
It seems display buffers are updated roughly once per second. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in 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 _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
