- Install the tpb package via: sudo apt-get install tpb. You will be prompted to remove hotkey-setup, type y.
- Copy the /etc/tpbrc file to ~/.tpbrc.
- Edit ~/.tpbrc and look for the THINKPAD line, then change the command on the right to whatever command you want executed when the ThinkVantage button is pressed.
- If you have created a .Xmodmap to remap capslock to ctrl, uncomment the line that says XEVENTS OFF.
- Finally, make sure that the MIXER settings are all commented out and save the file.
- Add yourself to the nvram group via the Users and Groups applet.
- Edit /etc/default/tpb and change the line START_TPB="true" to START_TPB="false"; I've found if tpb starts automatically as root and you assign, say, xfce-setting-show to the ThinkVantage button, it won't be managed by your window manager.
- Add the following command in your Autostarted Applications applet: tpd -d
- Restart and try pressing the volume up/down keys
Troubleshooting: If it doesn't work, you can run tpd -v in the terminal to give you verbose output and help troubleshoot the problem. Type groups and double check that you are in the nvram group.