I've installed Ubuntu 14.04 on my Lenovo X220 and it worked fine for two weeks without any issues. Now the Sound Devices are gone! They are not broken cause I can control them in the terminal with alsamixer but I can't switch to another device (for example Bluetooth). Everything worked absolutely fine but from one day to another its not working. Any ideas?
I already re-installed ALSA and PulseAudio but nothing changes...