OK. So, here's the problem I found out in year using MacBook Air. I don't know exactly why, but sometimes (from nowhere) I cannot control sound using F10-F12, all other buttons works OK.
First, I checked in System Preferences options that might cause this, like using FN+F. That's not it. While using Maverics always helped restarting computer in Safe mode it automatically made buttons work properly, but now, after installing Yosemite, Safe mode does not help.
I would like to know if there is anyone with the same Volume button problem? And do you know why this happen and what could be done?
First, I checked in System Preferences options that might cause this, like using FN+F. That's not it. While using Maverics always helped restarting computer in Safe mode it automatically made buttons work properly, but now, after installing Yosemite, Safe mode does not help.
I would like to know if there is anyone with the same Volume button problem? And do you know why this happen and what could be done?