Thanks for the bug report. Please try logging into 'Ubuntu on Xorg' (select it on the login screen) and tell us if that has the same bug.
Also, bugs like this are often caused by a faulty connection. It could come and go at times when the amount or the structure of data over the cable (DisplayPort??) changes. So please try a different cable if you can.
Thanks for the bug report. Please try logging into 'Ubuntu on Xorg' (select it on the login screen) and tell us if that has the same bug.
Also, bugs like this are often caused by a faulty connection. It could come and go at times when the amount or the structure of data over the cable (DisplayPort??) changes. So please try a different cable if you can.