Re: Guidance for a USB microphone that always need a reset to work

On 10/25/22 19:49, Trenton Schulz wrote:
> Hello,
> 
> I have a Blue Yeti USB microphone that I've used for a couple years
> with FreeBSD. It works fine… eventually.
> 
> When I first plug it in, it is recognized, and I can choose it as a
> recording source, but it refuses to record anything. I'm not sure
> exactly what the problem is, but mictests.com will complain that the
> "track is paused" and nothing can unpause it. Maybe it can't be opened?
> 
> Regardless, I found that when I had the system booted to Windows and
> rebooted to FreeBSD, the microphone would work. So, I somehow hit upon
> the idea of running
> 
> usbconfig -d ugenX.Y reset
> 
> And surprise, it works with no Windows! It seems that I always need to
> issue a reset from a cold boot or a plug-in to get the microphone to
> work. It will never work without the reset.
> 
> The reset isn't a big problem, I normally remember to do it when I plug
> it in, but it does feel like something that could be automated away. I
> started to make a devd rule to run reset on device attach, but this
> won't work (with good reason because I saw that this would easily
> result in an endless loop).
> 
> So, I thought maybe there might be some suggestions to maybe make this
> work on the inital plug-in. Maybe it is a bug or quirk? Is there any
> additional information anyone would need?
> 
> Best regards,
> 

Did you do any tracing using usbdump ? Maybe some USB control requests 
are too fast or get stalled.

Windows is pretty slow attaching the drivers BTW compared to FreeBSD.

--HPS