Volume key repeat stop working

When I hold down an ASCII key on the keyboard, it will repeat.

However, if I hold down the volume function key, it will not repeatedly increment the volume.

How can I fix this? (Ubuntu 16.04 64bit)

Solution 1:

This is a Unity bug.

https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1586491

Looks like it's fixed and will soon be in Xenial's repository. If you want the fix right now, you can enable pre-release updates, then run sudo apt-get install unity/xenial-proposed.

Solution 2:

I meet this problem on my ThinkPad T430 also, if you wanna repeat, you need to click speaker icon first and then long press volume key.

I know it's not a real solution, but it's really work :P

OS: Ubuntu 16.04 64bit

Kernel: 4.4.0-24-generic