[Copy/Pasted from freedesktop.org] After testing new version of kernel on Ubuntu 17.10 installation (wayland + systemd) I discovered by chance that after suspend and unsuspend (systemctl suspend), internal monitor starts displaying image and everything works (for the first time with radeon driver).
So as a workaround I used /etc/rc.local compatibility to trigger suspend after appropriate ring level is initialized during boot(sudo chmod +x /etc/rc.local is also required). I tested same method with 14.04 LTS with no success (so I don't know exactly what upgrade made it work). ** Attachment added: "Workaround (Ubuntu 17.10 DRM 2.50.0 / 4.13.0-19-generic, LLVM 5.0.0)" https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/1553441/+attachment/5020675/+files/rc.local -- 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/1553441 Title: [Asus K55DR] When VGA plugged into laptop, only one monitor working at a time To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/1553441/+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
