I am having the same issue. Ubuntu 14.04 with Plantronics D100 and Logitech wireless mouse. UI does not appear to be affected on my system, and removing USB receiver fixes the problem immediately.
-- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1307044 Title: Unity looses mouse click handler when using enabling USB headset To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1307044/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp