On Tue, Jan 24, 2023 at 00:10:46 +0100, lnj.sam@gmail.com wrote:
Hello everyone and best wishes for 2023 :)
I have an old *Garmin Drive Smart 50 GPS* and I want to be able to attach it when it is in preboot mode to a VM hosted by a *Debian 11 host*.
From what I understand, the preboot mode allows us to flash a firmware before the GPS actually starts (used among other things when the GPS is soft bricked).
When I connect the GPS to the host it gives:
[...]
My questions :
Q1 : Is it possible ?
It shpi;d be/
Q2 : Am I doing it the right way ?
I don't think so. You are using a serial device emulated which is then connected to the host side USB-tty device. A better way is simply to use USB-assignment/passthrough and have the guest OS handle also the USB side
Q3 : Is there a method to pass such a device directly (pass-through) ?
To pass a USB device use the following XML: <hostdev mode='subsystem' type='usb' managed='yes'> <source> <vendor id='0x1a86'/> <product id='0x55d4'/> </source> <address type='usb' bus='0' port='4'/> </hostdev> Obviously tweak vendor/product. Alternatively when you are using virt-manager GUI there's a menu to pass any device, or by default when you have a VM window active and plug in a USB device it's passed to the VM. (It can be disabled though).