I have the same issue - in my case it is not reduced, but completely muted, not just reduced. I have restarted a number of times, seems to make no difference.
This is a fresh install of Xubuntu 14.04 LTS. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1310220 Title: System sound volume gets reduced when screen lock is activated To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/light-locker/+bug/1310220/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs