Please try checking the settings as described in last 2 troubleshoothing tips in https://wiki.ubuntu.com/Hotkeys/Troubleshooting
-- Volume keys combination locks volume up or down and keyboard https://bugs.launchpad.net/bugs/288134 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
