[just1n]

Hey guys,
 
This has been driving me nuts... I've got a Bifrost Uber with the Gen 2 USB input card and for whatever reason the connection to my Mac Mini will randomly drop out. Zero issues with the optical input.
 
I've done tons of research online and all fingers point to needed a powered USB hub (which I personally think is BS). So I went out and bought s $30 USB hub for my $600 DAC and it's STILL dropping out. Arg...
 
I have noticed when I reboot my Mac Mini, I have better luck with the USB input staying available, so this may also be an issue with the computer itself. Although, I did have the same problem with the DAC connected to my Pi, so I'm still blaming the Bifrost at this point.
 
Anyone have a similar experience with this on a Mac Mini or other Apple computer? I'm just about ready to sell this thing and move on...
 
Best,
 
Justin

 

[NA Blur]

This is a common issue with USB DACs that are not optimized for USB. This includes the Bifrost.

Try this first and report back.

https://support.serato.com/hc/en-us/articles/202552390-Troubleshoot-USB-dropouts-audio-glitches-Mac-

 

[just1n]

Thanks. I went through the list and the only thing I was missing was that I had Bluetooth enabled. I disabled it and will see how it goes... 

 

[NA Blur]

Have you tried the other USB port if it has one? Also, are you using any other USB devices when the drop outs occur?

 

[just1n]

There are 4 ports and I've tried them all with no luck... no other USB devices are attached. Very odd and annoying... I'm going to return this USB hub though!
 
Justin

 

[just1n]

here are the errors i'm getting when the DAC drops. been searching around online and can't find much about this error... 
 
12/4/15 8:11:38.000 PM kernel[0]: 001084.731783 PRT3@fd130000: AppleUSBHostPort::resetGated: unrecoverable enumeration failure after 8 attempts
12/4/15 8:11:38.000 PM kernel[0]: 001084.877557 PRT3@fd130000: AppleUSBHostPort::resetGated: retrying enumeration in 100 ms
12/4/15 8:11:38.000 PM kernel[0]: 001085.064180 PRT3@fd130000: AppleUSBHostPort::resetGated: retrying enumeration in 200 ms
12/4/15 8:11:39.000 PM kernel[0]: 001085.371109 PRT3@fd130000: AppleUSBHostPort::resetGated: retrying enumeration in 400 ms
12/4/15 8:11:39.000 PM kernel[0]: 001085.587161 PRT3@fd130000: AppleUSBHostPort::resetGated: retrying enumeration in 800 ms
12/4/15 8:11:40.000 PM kernel[0]: 001086.614187 PRT3@fd130000: AppleUSBHostPort::resetGated: retrying enumeration in 1600 ms
12/4/15 8:11:42.000 PM kernel[0]: 001088.601863 PRT3@fd130000: AppleUSBHostPort::resetGated: retrying enumeration in 3200 ms
12/4/15 8:11:43.000 PM kernel[0]: 001089.378931 PRT3@fd130000: AppleUSBHostPort::resetGated: retrying enumeration in 6400 ms

 

[quaestor]

I get the same errors for the DAC Box S USB, on OSX 10.11.2, can be reproduced on an old iMac (2009) and my Macbook 13'' (early 2013). Any news on this?

 

[theveterans]

It's OS X 10.11
 
Never had an issue with my Bifrost using Windows 10. Try Bootcamp and see if the issue still persists.

 

[rigo]

Ever since updating to El Capitan on my Mac Mini I've had a couple of issues with my Master 11. It would not recognize it and then it worked flawlessly for a month or so. Just today the Mini stopped recognizing it again. Need to test on a Windows computer and see if I have the same issue.

 

[just1n]

As an update, I swapped out my Blue Jeans USB cable for a $3 cable from my local electronics store and haven't had an issue yet... doesn't seem to have been OSX or DAC related as far as I can tell based on my testing.