libusb: device or resource busy [code -6]

[GeoffAbbott]

I'm trying to get this running on a raspberry pi 4,bullsye, but I can't get past this issue when trying to retrieve the Config from the usbDevice. Anybody else run across this issue? Thanks

[Karazum]

I have run into that issue, but on linux.
Try building the latest usbmuxd from the source
https://github.com/libimobiledevice/usbmuxd

[GeoffAbbott]

Yes this worked for me! Also when stuck "waiting for ping..." it works the first time after activating but I have to un plug the device and plug it back in to get it to communicate again. I'm getting an error "device busy [code -6]" when I'm attempting to close the session so I'm assuming that is the issue.

[Karazum]

You can work around that one by using usb reset
https://github.com/Karazum/usbreset/blob/master/usbreset.c

Basically, the flow for continues usage is

if (qvh active?) {
    usbreset /dev/bus/usb/xxx/yyy
}
qvh activate
qvh gstreamer

but after some time, event that wont do it, nor will unplugging and replugging in. Something is wrong with the device itself.
Currently, before doing usb reset, I also kill mediaserverd and mediaremoted processes and so far it works.