USB devices not available for forwarding on Windows host

[DavidB]

I am running NoMachine 7.6.2 on Windows 10 and need to forward my phone to a virtual machine ([removed] USB passthrough support leaves much to be desired so I want to use NoMachine), but I am having an issue with the USB devices listing not showing anything when I attempt to connect something. Has anyone seen this before, and if so, what was the fix?

[Giorgi-G.]

Hi,

What OS and NoMachine versions are on your virtual machine?

 

[DavidB]

All of my VMs use NoMachine 7.6.2. The virtual machines that I am trying to access include a Windows machine, an Ubuntu machine, and a macOS machine. I’ve not tried connecting out from one of those machines, but trying to connect in from my aforementioned Windows host does not show any USB devices.

[Giorgi-G.]

Such behavior could have a place if any of the conflicting software is installed on the Windows machine How to handle possible conflicts between NoMachine USB module and third party drivers

[DavidB]

I do not use any of the applications that are listed on that page, so I have gone with the last option: share the log files. I’ve attached them in a zip file.

Attachments:

1. logs.zip

[Giorgi-G.]

Based on your logs, I don’t see any issues with the USB forwarding module on the Windows machine.

To be 100% sure, could you please

1) send us a screen from Devices Manager

2) send a value of

“HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{36fc9e60-c465-11cf-8056-444553540000}”

registry key. To find it out, open Windows registry: Menu start -> run -> regedit; find the mentioned registry key in the tree on the left; find UPPERFILTERS variable on the right side and send it’s value.

Also if all your VM’s are on the same VM host, I would suggest checking if their USB drivers are enabled and supported by VM by itself. The same type of logs from VM Windows machine could be helpful.

[DavidB]

I’m not sure what happened, but it seems that USB devices are working again on my Windows host as well as all my Windows VMs. They are still not working on my macOS VM nor my Raspberry Pis however.

[Giorgi-G.]

Hi,

Could you please check if you have enabled extensions loading on your macOS machine?

https://knowledgebase.nomachine.com/AR01P00962

Also, could you please send logs from Raspbery PI? And check if nxusb.ko is well compiled on it?

https://knowledgebase.nomachine.com/AR11O00946

[DavidB]

I have checked if the extensions are enabled on my macOS machine, and they are, but it seems that USB devices are still not working. Additionally, I have another annoying problem with the macOS VM that I have been unable to fix: since installing NoMachine, the VM is stuck in a display resolution of 1024 x 768 instead of dynamically resizing as controlled by VMware Tools like it used to. What can I do about that?

The good news it, my Raspberry Pi is working now! As explained in the knowledgebase article you linked to, I did not have the kernel headers installed. After installing them, compiling the driver manually, and restarting the NoMachine service, USB devices began working properly.

[Giorgi-G.]

Hi,

Can you please connect to macOS VM, go to USB devices forwarding tab, wait until local and remote devices will be loaded and after run the following command in the cmd and send its output.

sudo kextstat | grep nx

[DavidB]

As requested, here is the output from the terminal, however, I should note that I didn’t have any local or remote devices get loaded.

Davids-Mac:~ david$ sudo kextstat | grep nx
Password:
Executing: /usr/bin/kmutil showloaded
No variant specified, falling back to release

Also, will this provide useful information for resolving the other issue that I am having with the screen resolution as well?

[DavidB]

I tried following the instructions posted here, but it looks like the three kext files that are referenced in that post are not present under the /Library/Application Support/NoMachine/Extensions directory.

/Library/Application Support/NoMachine/Extensions

[DavidB]

Nobody has advice? ☹

[Giorgi-G.]

Hi,

That seems you have a similar issue that is described here.  https://forums.nomachine.com/topic/nomachine-for-mac-does-not-install-usb-kext

I will send you a patch that fixes that issue.

[DavidB]

Thank you! I will try it and report back on whether it works or not.

[Author]

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