Hi!
I think that alsa-user would rather be the mailing list where this issue
should be discussed... Anyway, did you try
speaker-test -c2 -Dplughw:1,0 -twav
If this command produces white noise on your usb sound card, your
problem is only a matter of configuration.
Regards, Ingo
Andreas Hubmer schrieb:
> Hello,
>
> I have a Philips mini hifi-system named "Philips FWM589" that can be
> used as an usb sound card. It is recognized as USB Audio device but I'm
> not able to get it to work.
> The module snd-usb-audio is loaded and in gnome a message pops up that a
> new audio device was found. In the gnome audio preferences a new device
> "USB Audio" is shown but the test sound doesn't work.
>
> It seems that the "Philips Audio Set" is not standard-conform.
> Is there anyone who has experience with Philips USB sound cards or
> someone who can help me isolating the problem?
> Where should I start looking for possible problems?
> Is there a good way to debug the module snd-usb-audio? I found out that
> there exists the header file usbquirks.h. Can that be helpful to me?
>
> Vendor/Product ID of the USB Device: 0471:0111
>
> dmesg output after plugging in:
> [14603.564000] usb 1-2: new full speed USB device using uhci_hcd and
> address 7
> [14603.768000] usb 1-2: configuration #1 chosen from 1 choice
> [14603.776000] input: Philips Philips Audio Set as /class/input/input10
> [14603.776000] input: USB HID v1.00 Device [Philips Philips Audio Set]
> on usb-0000:00:1d.0-2
> [14604.176000] usbcore: registered new interface driver snd-usb-audio
>
> cat /proc/asound/cars shows my onboard sound card and the USB device:
> 0 [ICH6 ]: ICH4 - Intel ICH6
> Intel ICH6 with AD1981B at 0xb0040800, irq 16
> 1 [Set ]: USB-Audio - Philips Audio Set
> Philips Philips Audio Set at usb-0000:00:1d.0-2,
> full speed
>
> To change the default alsa-device I also tried changing ~/.asoundrc and
> added the following lines:
> pcm.!default {
> type hw
> card Set
> }
> ctl.!default {
> type hw
> card Set
> }
> Afterwards I restarted alsa with "/etc/init.d/alsa-utils restart" but
> that didn't help. I couldn't hear anything.
>
> I'm using Ubuntu 6.10 and the new kernel 2.6.20.1
>
> Thanks for your help!
>
> Andreas Hubmer
>
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