[LAD] USB audio interface

Len Ovens len at ovenwerks.net
Tue Aug 8 17:10:27 UTC 2017

On Tue, 8 Aug 2017, Rafael Vega wrote:

> I own a Presonus Audiobox 1818VSL which worked just fine on an older macbook
> running Arch Linux. I switched computers recently and the Presonus gets a lot of
> xruns on this new computers. I saw some posts that suggest that unit is not
> compatible with USB 3 ports.
> https://linuxmusicians.com/viewtopic.php?f=6&t=13093&sid=d57c684ef372ed2a28fd487
> f102cc690#p57256

My understanding is that this particular problem is that it is a hardware 
problem with some of the Intel MB chipsets (not the cpu itself). The first 
thing to check however, is what else in your new computer is using the 
same usb port, or the same irq. Some people have better luck removing the 
USB3 driver and running the USB3 as USB2. Some have done better just 
adding a PCIe USB card (in a desktop). Rumour is NEC USB chipsets work 
better... but it could be just using a PCIe card on a fresh irq too.

Len Ovens

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