Giorgi-G.

[Giorgi-G.]

Hi,

Please check whether the nxusb.ko kernel object is compiled on your machine. If not, you will need to compile it. Instructions for checking and ultimately compiling are available here: https://www.nomachine.com/AR12J00658

There’s nothing else in the attachments that can help us unfortunately. Could you also please send us logs from server and client sides? https://www.nomachine.com/AR10K00697

[Giorgi-G.]

For now we can say that you have passed point #1. And the reason why USB device forwarding doesn’t work is that nxusb.ko driver is compiled but not loaded. So you will not be able to forward devices from it or connect devices to that machine.

 

It’s necessary to check and find one of two possible reasons why it’s not loaded. To that you need to have a root access. And also to fix it you will need to have root access.

Here are instructions to find out why driver is not loaded:

Run in terminal following commands:

sudo insmod /usr/NX/bin/drivers/nxusb.ko

after:

tail /var/log/syslog 

and send us output from terminal.

[Giorgi-G.]

The command lsmod | grep nxusb returns nothing.

Are you sure that before running that command you opened Devices -> Connect USB devices and waited before USB devices list will be loaded?

About logs – we didn’t receive anything to forum@.

[Giorgi-G.]

Hi,

In that case, I can explain the steps to follow for point #1. Here are instructions for how you can do that without admin rights:

Connect to remote machine, open terminal on it and type command:

cat /usr/NX/var/log/nxinstall.log | grep -i usb && ls -l /usr/NX/bin/drivers/

After go to NM Menu -> Devices -> Connect a USB device and wait 10 seconds till devices appear and type this command in the terminal :

lsmod | grep nxusb

And send us file with all output from the terminal.

Again, the above commands don’t need root access. And they will completely cover point #1.

It also may be helpful if you send us the logs from remote Linux machine. Because of you don’t have root rights, you will not be able to send us a complete package. But partial logs will be possible.

To collect them run following command in terminal:

cd ~/ && tar -czf linux_log.tar.gz /usr/NX/var/log

That command will report warnings, however don’t worry about them. A linux_log.tar.gz package will be created in your home directory. Send this file to us using forum[at]nomachine[dot]com making sure you reference your topic.

[Giorgi-G.]

Do you have root access to your remote Ubuntu?

Without it you will not be able to check any of that 3 points and the only way is to talk with the administrator of that machine administrator. If you have it – you can just the follow links I sent in my previous post.

[Giorgi-G.]

Hi,

There are 3 possible reasons why it doesn’t work.

1. USB forwarding kernel object is not compiled. Take a look here https://www.nomachine.com/AR12J00658

2. Your Linux is running in Secure Boot mode, take a look here https://www.nomachine.com/AR05O00929

3. On the remote Unix machine, the administrator has disabled USB forwarding/connecting to it and that’s why you can’t forward anything to Unix machine.

[Giorgi-G.]

Hi,

Here is a way that should fit it.

1. Check whether this file exists on your disk — C:\WINDOWS\system32\drivers\asmthub3.sys

If yes – USB forwarding will remain disabled.

2. Check whether this file exists on your disk– C:\Program Files (x86)\NoMachine\etc\node.cfg

If yes – please attach that file to your forum reply.

Also check whether you have rights to open and read that file. If you don’t, it will also not work.

3. Send us output file PC1.txt generated after running this command in command prompt.

driverquery /V > PC1.txt

3. Uninstall NoMachine -> Restart machine -> Install NoMachine -> Restart machine again.

It should work well. If not, please send us new logs.

[Giorgi-G.]

First of all you need to restart nxserver after uninstallation of ASMedia USB Drivers. It can be done manually or you can restart whole machine.

It also matters how you deleted ASMedia USB Drivers. It should be deleted using the original uninstall tool by ASMedia from Programs and Features.

And can you send us logs from your Windows machine and I will check whether there might be any conflicting drivers that are stopping the nxusb module from working?

[Giorgi-G.]

Hi,

Can you please send us logs from Windows machine (see https://www.nomachine.com/AR10K00697″) and screenshot of Devices -> Connect USB Device panel?

And also try to forward another USB device, i.e. Flash Drive from your Windows to Ubuntu. Just do that after restart of both machines.

[Giorgi-G.]

Hi,

The thing that you can’t forward even USB flash drive indicates that the issue is not in the smart card reader, it’s probably in the USB forwarding module.

That’s why we weren’t able to reproduce it because of we were testing Omnikey 3021 USB Smart Card Reader.

For now we suggest to update NM to the latest version and try to make the following test.

Connect in NM to remote host. Go to USB forwarding tab, list devices.

Do you see here local and remote devices listed?

After close devices tab and type following command in remote Linux terminal:

lsmod | grep nxusb

If result is empty – try to type next one command:

sudo insmod /usr/NX/bin/drivers/nxusb.ko 

And after repeat first command and send us terminal output.

 

Also check out this article: https://www.nomachine.com/AR05O00929

[Giorgi-G.]

Hi,

NoMachine supports USB devices forwarding and may allow to forward your USB game controller from your Windows machine to the remote Ubuntu. To do that you need to click on top right corner of screen, after NoMachine session menu will appear click to

Devices -> Connect USB Device -> Find your game controller in list of Local Devices -> Click on it -> Click Connect.

After device will be forwarded to remote machine you will see green dot near your device.

Please have in mind that if you want game controller to work on remote Ubuntu you need to have installed drivers for it on Ubuntu.

Additionally, if you will not see any devices in Devices -> Connect USB Device panel, it may sign that you have not builded nxusb.ko module n Ubuntu. To build it please follow this article AR12J00658

[Giorgi-G.]

Hi,

First of all here are instructions on how to recover corrupted installation:

For that you need to move:

C:\Program Files (x86)\NoMachine\etc\server.lic.sample to C:\Program Files (x86)\NoMachine\etc\server.lic

and also move:

C:\Program Files (x86)\NoMachine\etc\node.lic.sample to C:\Program Files (x86)\NoMachine\etc\node.lic

After that you need to run installation file of the NoMachine Free installer with disabled USB forwarding module and update NoMachine installation.

We will pass a link to the free NoMachine version with disabled USB forwarding module.

After updating you will be able to use all functionalities of the NoMachine Free version expect USB devices forwarding.

Also it would be very helpful for us if you could send your Memory Dump File for us to check. Usually it’s located here: %SystemRoot%memory.dmp.

[Giorgi-G.]

Hi,

NoMachine USB forwarding module uses specific methods and drivers that may not be compatible on some OSes with third party drivers with the same functionality. We recommend to disable it in the other program for a correct functioning of USB in NoMachine.

[Giorgi-G.]

Hi,

We are still unable to reproduce this despite several attempts.

@frank, can you please tell us what versions of OS you use and your smart card reader version?

And also, have you tried to forward some another USB device, not SM reader ?

Regards.

[Giorgi-G.]

Hi,

first try uninstalling NoMachine from your Mac and restart the machine. After that, install the latest version from our website. Then check in System Preferences… -> Security & Privacy that there is nothing that needs to be accepted manually for ‘Apps downloaded from App store and identified developers’.

You should see something like I have attached, so then try forwarding USB device once again.

Attachments:

1. 

   Screen-Shot-2018-12-03-at-17.07.04.png
   

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