I just upgraded to Ubuntu 15.04 and can no longer reproduce this bug. My xorg package is 1:7.7+7ubuntu4. As far as I know the upgrade is the only change I've made to my desktop since the last time I could reproduce the bug.
I hope this new information is helpful. I'd still be happy to help out with further testing or by providing more information about my hardware and software. -- 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