Not sure what project this bug is for but it's not Mir. Mir is not used on the Wily desktop right now.
P.S. This sounds like a general Ubuntu desktop bug I've experienced myself for at least a year now on various releases. ** Package changed: mir (Ubuntu) => ubuntu -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to mir in Ubuntu. https://bugs.launchpad.net/bugs/1461476 Title: sleep screen Status in Ubuntu: New Bug description: Ubuntu 15.10 beta Wily Werewolf from r.227 doesn't sleep the screen after idle. Looks like that it never sleep the screen no matter what time had you configured. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1461476/+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