On Thursday, 14 July 2022 18:42:10 BST Mark Knecht wrote: > Does anyone have experience with what causes random USB disconnects in a > Virtualbox VM and possibly how to fix them? > > I have a new external DSP processor box that connects to Windows host > software over USB. If I dual boot my Linux box into Win10 the control > software works fine for as long as I want to use it. Communication is > bi-directional and everything is great. > > If instead I'm in Linux with a Win10 VM running I can run the same software > in the VM, and it will always see the external DSP when first started, but > at random times, generally 5-20 seconds but never more than 5 minutes, the > software will tell me the USB connection has been interrupted and I am > forced in the software to reestablish a connection. I am always able to > reconnect but I am so far unable to keep it connected. > > I've tried the VB USB 1.1, 2.0 and 3.0 virtual interfaces. Only 3.0 works > at all. > > I have tried multiple USB ports on the host machine. All work in native > Windows. All work in Virtualbox but all disconnect. > > I see absolutely no messages of any type about USB disconnection in dmesg. > I don't know where else to look. > > The Virtualbox logs aren't clear to me so I'm studying those at this time, > as well as asking in the VIrtualbox forums and here. > > Thanks in advance, > Mark
I don't recall having noticed a similar problem with different USB devices on a Win10 VM here, but just in case have you checked USB power saving settings? https://www.windowscentral.com/how-prevent-windows-10-turning-usb-devices
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