The DMI quirk that was the fix for bug 281732 is not in place for the X200s. The DMI quirk should be a last resort though, so let's look for a better fix for the problem first.
First you should try the steps in the "Step-by-step troubleshooting" section of https://wiki.ubuntu.com/Hotkeys/Troubleshooting and report back your observations. Be sure to try the steps in the "Fixing broken keys" section of /usr/share/doc/udev/README.keymap.txt.gz if you don't get any key events from xev. If you don't find any key events using that technique, try the following. Set your audio to be muted, then execute 'cat /proc/acpi/ibm/volume', then press the mute button and run the command again. Does the reported state change? Try the same thing again, but start with the audio unmuted. Finally, run 'tail -f /var/log/kern.log', press the mute button, and see if you get any output in response. If you do, please report that output here. Thanks! ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete ** Changed in: linux (Ubuntu) Assignee: (unassigned) => Seth Forshee (sforshee) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/810048 Title: Mute button does not work on Lenovo X200s To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/810048/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
