Ubuntu 17.10 with kernel 4.16-rc1, radeon.mst=1, extended display in GUI. The screens chained by MST DisplayPort are seen properly as separate screens. Build screen is seen in the GUI and although enabled there, remains blank. Periodically (~5s) screens become blank for ~1s.
** Attachment added: "journal_mst.log" https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/1509997/+attachment/5054162/+files/journal_mst.log -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-ati in Ubuntu. https://bugs.launchpad.net/bugs/1509997 Title: 1002:6821 Graphical issues when radeon MST enabled To manage notifications about this bug go to: https://bugs.launchpad.net/xserver-xorg-driver-ati/+bug/1509997/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : email@example.com Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp