Confirmed on a new installation of Ubuntu 14.04 with a Logitech G502 gaming mouse. Alt-tabbing and/or alt-f1 and back again seems to fix.
** Attachment added: "lshw.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/41301/+attachment/4501188/+files/lshw.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to the bug report. https://bugs.launchpad.net/bugs/41301 Title: PS/2 Logitech MX310 clicks stop working sporadically To manage notifications about this bug go to: https://bugs.launchpad.net/xorg-server/+bug/41301/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs