I have the following problem: After a kernel update, my side panel buttons on my L412 to incresa/decrease and mute volume (also de mic mute) stopped working. I don't know how to fix this, and the solutions for the thinkpad T520 doesn't work. Could someone help me? Thanks!
1 Answer
Problem solved!
The solution was to shutdown, unplug it and remove the battery. Wait for 1 minute, replace and it's fixed!
It seems to be the way that solves this problem in other Thinkpad models too.