Sergey, The solution mentioned above doesn't work in Ubuntu 13.10 due to the bug in keymap code (fixed in upstream). Also you can check if you remapped all of buttons using evtest. You need to evtest and click all buttons one by one to get all of key-codes. In addition to this I need to say that the solution mentioned above doesn't work in Ubuntu 14.04. I will post an update within the next message.
Stanislav -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1247676 Title: Plantronics .Audio 648 buttons don't work in Ubuntu Saucy 32-bit To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1247676/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs