MightyOhm.com

Hey all,

So I've gotten as far as installing mpd and connecting to the slayradio stream using mpc. Unfortunately all that comes out of my usbb audio adaptor is a continuous beep. I've followed the instructions posted by Stig Hess in the comments section of part 5, but after executing -
opkg install kmod-alsa

I get an error -
* Packages were found, but none compatible with the architectures configured

Has anyone else encountered this problem? Any advise?

Thanks in advance,
Stew

Ps. Can I just add that the this project has provided much excitement thus far =)

Are you using a WL-520gU router? What USB-audio adapter? Are you using a hub to connect it or connecting it directly to the router?

What version of the firmware are you using? The one that I use in the tutorial, or a custom build from somewhere else?

What does your opkg.conf look like?

I don't recall needing kmod-alsa to get mpd working, but you're right, it appears that some audio adapters need it.

Yes I'm usng a WL-520gU. I followed the instructions exactly and used the firmware you provided.
No hub, connecting directly, but it is a cheap ebay usb adaptor.

opkg.conf looks like -
src/gz snapshots http://downloads.openwrt.org/snapshots/ ... 4/packages
dest root /
dest ram /tmp
lists_dir ext /var/opkg-lists

After installing kmod-usb-audio and kmod-usb-ohci, I get the following output on reboot....

usb-ohci.c: USB OHCI at membase 0xb8003000, IRQ 6
usb-ohci.c: usb-00:03.0, PCI device 14e4:471a
usb.c: new USB bus registered, assigned bus number 1
hub.c: USB hub found
hub.c: 2 ports detected
hub.c: new USB device 00:03.0-1, assigned address 2
usb.c: USB device 2 (vend/prod 0x1130/0xf211) is not claimed by any active driver

I've just noticed that this is different than the output you got! My audio usb adaptor also has a microphone line in connection. Perhaps this explains the '2 ports detected'? Worst case I can just buy an adaptor that works but it would cool to get this one going!

Chrs

You need to modify opkg to point to the package repository on mightyohm.com - the instructions are in the tutorial. This is why you are getting the architecture error when you try to install kmod-alsa.

It seems like your USB audio device might not be supported by the kernel, based on the error "USB device 2 (vend/prod 0x1130/0xf211) is not claimed by any active driver".

Try wrtradio firmware here:

viewtopic.php?f=2&t=141

I have the same problem. How did you resolve this?

I believe the fix is to load the kmod-alsa kernel module and edit mpd.conf to enable ALSA (instead of OSS) for sound output.

mightyohm,
thanks so far! It seems to be difficult to find the right usb sound adapter in Holland. I think I have the ALSA one, but I am complete newby on linux. Could you explain what to do to load the kmod-alsa kernel module in stead of OSS?
I would be very happy! Thanks, Hans

From Stig Hess' comment in response to part 5 of the tutorial:

Comment out “audio” in the file /etc/modules.d/60-usb-audio

Change repository in /etc/opkg.conf to

src/gz snapshots http://downloads.openwrt.org/snapshots/ ... 4/packages /

I also had to change dest to “dest root /jffs”

opkg update
opkg install kmod-alsa

Reboot. That’s it!!

The edits to mpd.conf should hopefully be self explanatory.

The bad news is that it seems like many USB-audio adapters have problems. If you can find one that uses the CM119 chip then there is much higher likelihood that it will work with this project.