The issue only reproduced on first thunderbolt port which next to escape key. The external monitor doesn't lit up even though xrandr shows it is connected. Switching output modes by hotkey or GUI doesn't help.
xrandr output: ... DP-2-3 connected 1920x1080+0+0 ... ** Attachment added: "dmesg-5.4.0-21-switch-fail.log" https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1872034/+attachment/5355434/+files/dmesg-5.4.0-21-switch-fail.log -- 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/1872034 Title: [Focal] No HDMI output through thunderbolt docking station To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1872034/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
