Note Pro 12.2 USB / DAC Audio

Hi!

First, I'm not sure if this is the right place for this thread....

Okay, I have SM-P905 running stock rooted 4.4.2 TouchWiz rom. What I found is you can't (Or at least I couldnt :)) use USB DAC to get better audio out from tablet. With my Note 3 (SM-N9005) running also 4.4.2 TW USB audio did work.

I googled around for solution and compared audio_policy.conf files from both my devices, Note Pro and Note 3 and found some differences.

By editing audio_policy.conf on my Note Pro I got USB audio working so I thought to share it with you.

Go to /etc/ and open audio_policy.conf

Find this and add everything marked red, then reboot:

Code:

---

      usb_device {
        sampling_rates 44100|48000
        channel_masks dynamic
        formats AUDIO_FORMAT_PCM_16_BIT
        devices AUDIO_DEVICE_OUT_USB_DEVICE|AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET

---

On channel_masks there will read AUDIO_CHANNEL_OUT_STEREO so just replace it like stated above.
Don't forget to add separator | to sampling_rates and devices

This did work for me, it might not for you, do this by your own risk. I'm not responsible for anything that happens to you or anything/anyone near you.

Remember to backup original file first and set permissions if needed!

Android 5 a.k.a Lollipop should support this by default (not sure since all my devices are running still KitKat).