Asla-base.conf

Atomize

Hey guys and girls hope you are all good and hello from me (nick)

Ok my problem is I have USB audio plugged in to raspberry pi b+ running retropie 4.1.
It see the USB audio

0 snd_bcm2835
1 snd_usb_audio

So I try and edit pi@retropie:~ $ sudo nano /etc/modprobe.d/alsa-base.conf
Enter nano
options snd_usb_audio index=0
options snd_bcm2835 index=1
options snd slots=snd-usb-audio,snd-bcm2835

Try and save it but all I get is ...error writing etc/modprobe.d/alsa-base.conf no such file or directory

Any ideas iv asked my best friend Google but no matter what I try and save in Nano I get the same no such file bla bla bla.

Thanks.

obsidianspider

@Atomize These instructions from Sudomod are how I got USB audio to work on my RetroPie build.

Weird that you can't create the file. How are you exiting out of nano? Ctrl+X?

Atomize

Yes

obsidianspider

@Atomize When you navigate to /etc/modprobe.d and list the contents with ls? Is other stuff in there?

BuZz

@Atomize Please paste the exact output from the console - including command entered. Looks like your didn't paste the above or if you did, there is a missing / in the error so I want to verify paths.

Please use a code block - http://commonmark.org/help/

Atomize

That's what I followed and it all worked up to the ctl x to save and all I get is no such file etc.

Atomize

sudo nano /etc/modprobe.d/alsa-base.conf

That enters me into nano

options snd_usb_audio index=0
options snd_bcm2835 index=1
options snd slots=snd-usb-audio,snd-bcm2835

Ctrl+X Y to save then I get the error no such file..

Atomize

@obsidianspider

Can not access no such file or directory

BuZz

@Atomize To save, it's better to do ctrl+o, then ctrl+x.

What's the output of ls -la /etc/modprobe.d ?

Atomize

@BuZz
Says

Ls: cannot access /etc/modprobe.d: no such file or directory

BuZz

@Atomize Then you have accidentally removed an important configuration folder I think - However I have no idea of your set-up as you didn't provide any info when posting as requested when registering.

Are you using Berryboot for example ?

You should probably get a fresh image, as if that folder is missing, others may be too (unless you are using berryboot in which case the folder may not be there)

Atomize

@BuZz

Just installed retropie 4.1 about 2 hours ago and did nothing but add USB audio then i try and edited the asla-base.conf

Il try another image and start over...thanks all for your time

Atomize

All sorted guys.

All what I was trying just didn't work but this did.

http://superuser.com/questions/989385/how-to-make-raspberry-pi-use-an-external-usb-sound-card-as-a-default

Open /lib/modprobe.d/aliases.conf

Add the lines

options snd_usb_audio index=0
options snd_bcm2835 index=1
options snd slots=snd_usb_audio,snd_bcm2835

Ctl + X and it did save.

Thanks all for the help.