macbook pro mini displayport to hdmi not working no audio

You can quickly test sound by running speaker-test. Checking the HP option under widget control in the Playback Switch (Node PIN in the ALC892 codec, for instance) can sometimes improve audio quality and volume significantly.

Some audio codecs may need to have settings adjusted in the HDA Analyzer (see #Volume is too low) in order to achieve proper volume without distortion.

Setting a high value for Pre-Amp can cause sound distortion, so adjust it according to the level that suits you.

If you are facing low volume even after maxing out your speakers/headphones, you can give the softvol plugin a try.

If the volume is still too low, run alsamixer again: resetting the codecs may have caused new sliders to become enabled and some of them may be set to a low value. $ wget -O hda-analyzer.py a=blob_plain f=hda-analyzer/run.pyĬlose the analyzer, and when prompted as to whether you want to reset the codecs, say 'yes'. If all the sliders are maxed out, and the volume is still too low, you can try running the following script to reset your codec settings: Note that if you have many sliders, you may have to scroll to the right to see any missing sliders. Run alsamixer and try to increase the value of the sliders, unmuting channels if necessary. If the problem persists, verify that the Auto-Mute option in alsamixer is set to Disabled. Alternatively, killing the PulseAudio process may cause sound to start working in the desired process. If it is, try using apulse AUR, as described in Advanced Linux Sound Architecture#PulseAudio compatibility. If speaker-test produces sound but some other program does not, determine whether PulseAudio is being used:

Macbook pro mini displayport to hdmi not working no audio