Today's dist-upgrade, which pulled in new xserver-xorg-core 2:1.17-2-1ubuntu7 and a new unity 7.3.2+15.10.20150921-0ubuntu1 seems to have restored my full desktop. Closing as invalid for now. Will reopen if the problem recurs.
Today's dist-upgrade, which pulled in new xserver-xorg-core 2:1.17-2-1ubuntu7 and a new unity 7.3.2+15. 10.20150921- 0ubuntu1 seems to have restored my full desktop. Closing as invalid for now. Will reopen if the problem recurs.