Alsa audio to hdmi and analog

Help and Support Raspberry Pi
1

Hello,

Rasp pi2 with last update (april).

I am trying to work with alsa as audio output since dsp only works with that, and i do need the volume amplification that only works when alsa is selected.

Now my problem is can i force alsa to output sound to hdmi and analog the same time?

Thanks in advance.

2

ALSA audio shouldn’t be used.
ADSP should work find with the default Pi Sink, as long as you are using MMAL and not OMXPlayer.

3

since I am using omx , I see no other way any more than alsa . will this be fixed in the future?

thank you for the help.

4

Why are you using omxplayer ? It is not enabled by default on a Pi 2.

5

omxplayer will never support ALSA and will never support ADSP.
MMAL is the only option if you need ALSA or ADSP.

6

i bought an MPEG-2 license and as i can understand MPEG-2 hardware accelaration is only working through omxplayer.

Am i wrong?

7

Thanks for clearing this up for me my friend. Keep up the wonderfull work.

Thank you.

8

Yes. Both MMAL and OMXPlayer are hardware accelerated and use the MPEG-2 codec.

9

Thank you i will change them.

10

so i am trying with omxplayer disabled and adsp enabled, and audio to HDMI & ANALOG and everytime i am trying to play a movie i get the crash sad face.

Disabling adsp get the sad face away but i have no volume amplification.

So to use adsp i am back to alsa.

Should i provide logs? If so please advise what kind of logs (full?).

Thank you in advance.

11

To be honest I’ve never heard a report of ADSP working, so I’m not certain it does.
I’d remove it and try setting amplification from the audio settings OSD (when playing a video).
Increase it by 6 or 12dB and if you like it select “set as default for all movies”.