Hi Ian, thanks for your reply. I found the solution on my own: I needed to add an option model=thinkpad to snd_hda_intel. echo options snd_hda_intel model=thinkpad > /etc/modprobe.d/snd_hda_intel.conf Now it is working. Thanks Tim Am 14.07.2015 um 21:38 schrieb Ian Pilcher: > On 07/14/2015 06:02 AM, Tim wrote: >> In the audio settings of Gnome perferences I see an internal microphone >> which doesn't produce any input. The microphone is also not disabled by >> the key on the keyboard. > > One thing to try is adjusting the gain on the microphone *after* you've > started your conferencing application. I have to do this with my webcam > mic. >