NoMachine NX on Ubuntu 12.10

Dave Woyciesjes woyciesjes at
Wed Apr 3 16:11:52 UTC 2013

On 04/03/2013 10:41 AM, Dave Woyciesjes wrote:
> On 04/02/2013 11:25 PM, Keith wrote:
>> On 03/04/13 08:52, Dave Woyciesjes wrote:
>>> On 04/02/2013 05:30 PM, Keith wrote:
>>>> On 03/04/13 06:27, Dave Woyciesjes wrote:
>>>>>     I'm having a dickens of a time getting NoMachine NX Server working
>>>>> on my Ubuntu12.10 system. Will be using a Mac OSX 10.6.8 laptop with
>>>>> the NoMachine NX Client.
>>>>>     I created ssh keys on the Mac, exported to Ubuntu. Configured the
>>>>> OpenSSH as per
>>>>> And trying to glean help from here:
>>>>> This is the error when I try to connect on the Mac:
>>>>> NX> 203 NXSSH running with pid: 23627
>>>>> NX> 285 Enabling check on switch command
>>>>> NX> 285 Enabling skip of SSH config files
>>>>> NX> 285 Setting the preferred NX options
>>>>> NX> 200 Connected to address: (server IP) on port: 22
>>>>> NX> 202 Authenticating user: nx
>>>>> NX> 208 Using auth method: publickey
>>>>> NX> 204 Authentication failed.
>>>>> Help!
>>>> Can you SSH from your MAC to the Ubuntu *without* using the NX client?
>>>> It does look like the authentication you have configured for SSH is not
>>>> setup correctly. I recently tested NX from an Ubuntu to Ubuntu system
>>>> and it worked very well, and all I did from memory was setup SSH server
>>>> on Ubuntu box I wanted to connect to copied the SSH key over from the
>>>> client.
>>>> Cheers
>>>> Keith
>>>     Yeah, setup & tested the SSH first. First I was able to connect
>>> supplying the password; then I generated & copied the keys over, and
>>> turned off password auth in the SSH config. Still worked.
>>>     Looking at the NX output above, it says "Authenticating user: nx".
>>> but in the NX client setup, I typed in the Ubuntu username. What gives
>>> there?
>> I just setup another test from my Ubuntu laptop to a test Ubuntu VM
>> laptop running 12.10 and vm 12.04.  Was able to connect no problem,
>> although I did forget and wondered why I started using XRDP instead,
>> NoMachine doesn't support Unity, so you will need to either setup Gnome
>> or Kubuntu etc. I think the next version of NX for Linux will support
>> Unity.
>      I have Gnome3/Shell installed, so the Unity issue shouldn't be a
> worry for me. I think.
>> Your problem though seems to be with  authentication of a nx user, and I
>> remember something about this in the docs last time, just to be sure I
>> assume you are entering the username into the NXClient app on your mac
>> of a user on the Ubuntu machine? Otherwise take a look at this:
>      Hmmm, this looks very interesting. I'll have to give this a
> look-see. Thanks much.

	No dice after going through what is mentioned here. Same error as above.
	I didn't see anything, but do I need to create an nx user on the Ubuntu 

>> By the way, do you really need to use NX, what about doing what I did
>> and installing XRDP on Ubuntu and then running an RDP client from your
>> MAC, it's very fast... just not as secure, although I think you can also
>> set this up via SSH too.
>      No, not really, just something simple; akin to using Remote Desktop
> Connection for Windows -> Windows. From what (little) I understand of
> VNC, I have to be logged in to the GUI on the Ubuntu box, and I don't
> have much choice about the screen size on the Mac. Whereas with RDP, the
> Windows host only needs to be booted (no user logged in locally); and
> the RDC client can choose whatever screen resolution it wants and can go
> full screen over dual monitors.

--- Dave Woyciesjes
--- ICQ# 905818
--- AIM - woyciesjes
--- CompTIA A+ Certified IT Tech -
--- HDI Certified Support Center Analyst -
             Registered Linux user number 464583

"Computers have lots of memory but no imagination."
"The problem with troubleshooting is that trouble shoots back."
  - from some guy on the internet.

More information about the ubuntu-users mailing list