Re: difference between command line and virtual machine manager

[Simon Becherer]

Am 08.09.23 um 12:41 schrieb wf5w@gmx.com:
> I am a newbie when it comes to QEMU/KVM. So bear with my questions.
> To explain what I am doing, I am a ham radio operator, and need to run Winlink radio email and VARA in Windows. That is all I use windows for. Wine is not sufficient to run it for some reason that I am unable to 
> fathom. Therefore, I have had to resort to the Virtual Machine.
> Now on to the reason for this post:
> My host is a fairly recent Linux Mint 21.1. My Guest is a Windows 10. My usual method is to bring up Virtual Machine Manager, and run Windows from there. It works great UNTIL I try to use the radios' USB port for 
> data communications.
> The radio has either a C-Media chipset or a cp210 type chipset (depending upon the radio). It has the quality of being BOTH a USB audio, AND 1 or 2 serial ports (for CAT control and PTT). What I need to do, is to 
> pass through both the audio part and the serial port(s) part as well.
> But they might not be present, if the particular radio is not on. Which brings me to my 2nd question, how do I start up the VM without them, if I am not plugged in to the radio's USB port. And then be able to run the 
> VM when they ARE plugged in. Which leads me to, can I run this whole thing via the command line with or without the particular USB port, and how do I create the command line version from the Virtual Machine Manager?
> So in summary I have 3 questions:
> 1. How to pass through the USB device in question (both audio and serial) ?
> 2. How to make it all variable (sometimes one radio vs the other will be 
> plugged in, and sometimes none at all) ?
> 3. If different CLI versions have to be made depending upon #2 above, how do I 
> create that from what I have in the Virtual Machine Manager?
> I hope this ramble makes some sense to someone at 5:00 in the morning!
> Thank you for taking the time to read this, and look forward to your answers.
> Jerry

Maybe i do not completely understand, but what i do:

1+2)
i use virtmanager and there is a option to bypass usb-ports
inside the "pull down menues". i do this for some usb-dongels
the host-port(s) can be used, or not, and so its seen inside the
vm or not. in my case, 2 usb dongels are always plugged in
and i switch between this 2, because otherwise my old windows
software will only see one of them (lsusb did not see any difference
between the dongels).
but if i remember correct its also possible to plug it in,
and after that connect via the virt manager the usb-port.
its a little tricky to set the host system to do it, at least
in opensuse. - i have it somewhere written down how to configure
it (for opensuse) but i have to search if you are interested in.

3) the commandline virt manager is using you will find by
ps fax |grep qemu

simoN



> ----
> Extra Ham Operator: WF5W
> Registered Linux User: 275424
> 3D designer
>
> The most exciting phrase to hear in science - the one that heralds new discoveries - is not 
> "Eureka!" but "That's funny...". - Isaac. Asimov

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