The log shows Firefox is being run natively under Unity 8 (no Xmir). Firefox is known to not be built natively for Mir, so it's not a surprise that it it not start.
Assuming that an Xmir instance should be launched just in case for any and all applications run under Unity 8 was purposefully disabled to prevent unwanted empty black windows from covering the screen. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1668429 Title: X apps fail to launch with failure to open display (no Xmir running or no access to it) To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1668429/+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
