usb sound card kitkat

[hatharry]

hi all

i have a sound blaster x-fi pro usb. is there any way to get this working with kitkat?

Thanks

[OmegaKZ793]

HI! I have same problem.

I make some changes in init.sh.

Now a have initialised my X-Fi Pro usb by alsa_ctl init

alsa_aplay is playing wave files normaly. It's mean soundcard is recognized by kernel and alsa.

There was one problem. How do I get the sound card through Android.

i have only mixer "PCM" and "Mic" is printed by "alsa_amixer scontrols".

As far as I understand it to work in Androyid needs mixer "Master"

Please halp me solve the problem

[OmegaKZ793]

Surely no one knows how to fix it ?

I just stuck with the sound , the rest works .

[Chih-Wei Huang]

If the sound driver works,
you have to debug the HAL.
Read the code in hardware/libaudio/
and try add more logs to see what failed.


--
Chih-Wei
Android-x86 project
http://www.android-x86.org

[OmegaKZ793]

Good Day, Chih-Wei Huang !

 

If the sound driver works,

Yes its works. I can play WAVE files with "alsa_aplay" comand.

I unload all audio modules, except the "snd_usb_audio".

Initialized only one sound card, and that "X-Fi Go! Pro". Defined as "USB Audio".

 

you have to debug the HAL.
Read the code in hardware/libaudio/
and try add more logs to see what failed.

I tried to do debugging.

When i attempt to play the sound from the Android, i get in logcat error:

E:audio_hw_primary ( 987) pcm_openout) failed: invalid argument!

Then I can't progress in solving the problem.

I expect that incorrect initialized sound card frequency or other parameter.

 

[Chih-Wei Huang]

Probably. Please check the pcm_open statement in
start_output_stream function of hardware/libaudio/audio_hw.c.
Try to adjust the out->pcm_config to see what is acceptable.
(I guess the OUT_SAMPLING_RATE, you may try 44100 first)

[hatharry]

 i got my card working. i disabled my on board sound in the bios. i remember disabling my on board sound a while ago without it working. i don't know why its working now.

[Mexus]

Hi hatharry,

so did you actually change anything? Or just simple turning of your onboard soundcard did the trick?

[hatharry]

I "alas_allay -L" to make sure the device id was 0 on my cards. Tried so hard to change the card order in audio_hw.c and around.conf with no luck. Disabled onboard and it just started working.

[hatharry]

Alsa_aplay I mean

[Mexus]

Thanks. I will try that. 

I am fighting with my usb sound card too. The card is detected but no sound at all. 

On Thursday, April 2, 2015 at 11:46:12 AM UTC+2, hatharry wrote:

Alsa_aplay I mean

[OmegaKZ793]

Alsa_aplay I mean

Index of sound card is "0".

i desable module hda_audio. Only one card is init by ALSA_CTL INIT

 

[hatharry]

Are you using 4.4 r1 or newer?

[hatharry .]

Oops 4.4 r2?

On 3/04/2015 1:31 am, "hatharry" <hath...@gmail.com> wrote:

Are you using 4.4 r1 or newer?

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[OmegaKZ793]

Probably. Please check the pcm_open statement in
start_output_stream function of hardware/libaudio/audio_hw.c.
Try to adjust the out->pcm_config to see what is acceptable.
(I guess the OUT_SAMPLING_RATE, you may try 44100 first)

Yes! Its WORKS!

Big Thx!  OUT_SAMPLING_RATE 44100 is solve my problem! Now i have sound!

[OmegaKZ793]

четверг, 2 апреля 2015 г., 18:34:41 UTC+6 пользователь hatharry написал:

I using 4.4.4 R2

 

[David]

Last year I tried to get some Logitech USB speakers working with a Samsung NC10, Chih-Wei suggested disabling the onboard audio driver but I couldn't find any way to do that in Bios and gave up.

I am not clear from this discussion whether there is a way to do this now using 4.4.4 R2? Can someone please summarise the steps for me?

Thanks, David

https://groups.google.com/forum/#!topic/android-x86/247CeD_kAXc 

[Mexus]

anyone remember the kernel parameter to init USB audio first? So i would see usb audio as #0 in alsa_aplay -l

Or is there any way how to disable hdmi audio? I have no such setting in bios. 

[Mexus]

got it

snd.slots=snd-usb-audio

[Mexus]

and it works!!!

44100 did the trick

[hatharry]

Good Job! guess my card doesnt mind the higher 48000 sample rate. do you know where to put snd.slots=snd-usb-audio in the source?

[hatharry]

Does anyone know which file i need to put snd slots=snd-usb-audio?

[hatharry]

found it. its grub.cfg. thanks

[Mexus]

yes /grub/menu.lst

My soundcard supports up to 96k sample rate but looks like the 44.1k is the only option that works. 

How about you Harry? Did you manage to increase the rate to higher number?

[hatharry]

my sound blaster x-fi pro usb popped too much in the car so i replaced it with a xonar u7. i did try putting the sample rate to 96k but it didnt work on the sound blaster. the u7 can go up to 192k but i have yet to try it.