[Bug 208791] USB audio playback issue

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=208791

metsuke <metsuke at protonmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |metsuke at protonmail.com

--- Comment #5 from metsuke <metsuke at protonmail.com> ---
Perhaps this is the same issue that causes my Razer Megalodon (USB headset) to
constantly crackle as well.  It was nearly fixed by hselasky's suggestion: 
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Edit:

sys/dev/usb/usb_freebsd.h

And change:

#define USB_FS_ISOC_UFRAME_MAX 4 /* exclusive unit */

Into:

#define USB_FS_ISOC_UFRAME_MAX 5 /* exclusive unit */

Then re-build the kernel.
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There is still a crackle for 2 seconds every time a new audio stream starts,
but it goes away after that.  I thought the 11.0 upgrade would fix this, but I
still need a custom kernel.  If this is not the same issue, I'll open a new
one, thanks.

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