Re: Card won't accept new sample rate?

[Daniel James <daniel@64studio.com>]

Hi Takashi,

> If you start JACK, usually it prefers "hw" PCM, which means the direct
> access to the hardware without resampling, up/downmix, and format
> conversion (also without soft-mixing).  The "default" PCM is with
> everything, i.e. dmix, and plug layer.

Right - I just tried 'default' on my laptop, which points to the AC97 
chipset, and JACK wouldn't even start at 44100Hz. I switched to 
'default' at 48000Hz and it worked.

However if I plug in a USB audio interface (M Audio MobilePre), used as 
hw:2, then jack starts fine at either 44100 or 48000 and the sample rate 
is correctly displayed in qjackctl.

I think it's because of this USB interface that I believed JACK used to 
work at 44100Hz on this particular laptop. Now I know different :-)

Thanks!

Daniel


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