Re: Status of CM6631 USB

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On Wed, Mar 06, 2013 at 09:41:02AM -0800, chris hermansen wrote:
> So I have now tried the v2 patch.
> 
> It seems to work mostly.  I can't create a problem with aplay using a
> device of plughw:CARD=Interface,DEV=0 switching between 44.1/16 and
> 96/24 tracks.

Good. 

> Using gmusicbrowser with alsa and a device of
> plughw:CARD=Interface,DEV=0

This is with gmusicbrowser set to use the gstreamer back-end to play
audio? Do you have any other non-default audio settings?

> once in awhile I seem to move to a 96/24
> that plays in the old bad noisy/static-y fashion, but I can't seem to
> re-create the circumstances reliably.  If it happens, it seems to be
> when I use the fast forward to skip to the next song.  It has not
> happened more than once in a given gmusicbrowser session, of which I
> have probably tried 10 now, and it has only happened three times.

I have been trying to reproduce this, but I'm not able to. No matter how
much I skip between tracks with different sample rates, I always get
correct audio output.

Is it just when going from 44.1 kHz to 96 kHz, and not the other way? Is
there any kind of pattern in when the problem occurs?

> > To add to the confusion, I sent v3 of the patch as well. This is a minor
> > change over v2, but adds support for more cards based on C-Media chips,
> > like Asus Xonar Essence One.
> 
> I haven't tried that one.

No need to, v2 and v3 behaves identically for your device.

> Please let me know if you would like me to try some more experimenting.

Anything you can do to find a repeatable way reproduce the problem would
be helpful. 

Torstein

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