Thanks. The logs show Mir knows about the display getting re-enabled and the backlight coming back on is the only part that Mir is responsible for. I think the relevant aspects of Mir are working correctly.
** Changed in: mir Status: Incomplete => Invalid -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to unity8 in Ubuntu. https://bugs.launchpad.net/bugs/1638929 Title: after disabling a display, enabling makes screens go black Status in Canonical System Image: New Status in Light Display Manager: New Status in Mir: Invalid Status in QtMir: Confirmed Status in lightdm package in Ubuntu: New Status in unity8 package in Ubuntu: New Bug description: Reproduce: turn off then turn on some display (output.used = false then output.used = true) What happens: Turning off works fine, turning it back on does not What should happen: it should work as expected USC log: http://pastebin.ubuntu.com/23420797/ Unity8 log: (see that mirserver: Disabled works fine) http://pastebin.ubuntu.com/23420803/ Unity8 log (w debug): http://pastebin.ubuntu.com/23451437/ To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1638929/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp