Re: AudioTrak Optoplay...

[Takashi Iwai <tiwai@suse.de>]

At Fri, 6 Jun 2003 00:34:53 -0600,
Ross Miller wrote:
> 
> On Wednesday 04 June 2003 06:47, Takashi Iwai wrote:
> 
> > a possible reason is that either we set up the interface correctly, or
> > we pass too many packets for the requested status.
> > i added nrpacks module option in usbaudio driver.  please set
> > nrpacks=2 to reduce the max number of URB packets.
> >
> > the changes were committed to cvs now, so please give a try.
> >
> The changes you made allowed me to play sound through the device, but I 
> still get those usb-check-bandwidth messages, regardless of whether or not 
> I used the "nrpacks=2" option for the snd-usb-audio module.  Is there 
> anything else we can try?  The driver is usable as-is, but all those 
> messages fill up the syslog pretty quick.

to be sure, please check /proc/asound/card0/stream0 while playback
and how much URB packets are being used.

the message can be disabled if you build the kernel without
CONFIG_USB_DEBUG, btw.

> Also, although a volume control shows up in alsamixer (and that's all that 
> shows up in alsamixer) it doesn't seem to affect the sound coming out of 
> the optical port; it only controls sound coming out of the analog 
> headphone jack.

if you change a DAC volume, it should not affect the "digital" outs
:)


Takashi


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