[GRLUG] remote sessions

[Eric Beversluis]

Darrel,
Thanks--that sounds like what I need to know to go forward.

On Mon, 2011-01-10 at 09:50 -0500, Darrel Clute wrote:
> Eric,
> 
> Can you SSH to the laptop before logging on locally?  How is the
> laptop connecting to the network, wired or wireless?  NX utilizes SSH
> and X11 forwarding and starts on call when executed properly via SSH,
> they also have some customizations which permits greater compression
> and greater handling of latency then the default X11 over SSH.
> Therefore if you cannot SSH to the device you won't be able to launch
> an NX session.
> 
> Based on your description I would presume that the laptop is
> connecting via wireless and you are still using the default
> NetworkManager.  NetworkManager will start a wired connection before
> login, but not a wireless, by default.  If you are connecting via
> wireless, you may want to replace NetworkManager with WICD as the
> latter will start a wireless connection before login, and personally I
> haven't had much success with NetworkManager successfully starting a
> wireless connection before login.
> 
> Let me know if that helps or not.
> 
> 
> Sincerely,
> 
> 
> Darrel Clute
> 
> 
> 
> On Mon, Jan 10, 2011 at 08:52, Eric Beversluis
> <ebever at researchintegration.org> wrote:
> > On Mon, 2011-01-10 at 08:27 -0500, Michael Mol wrote:
> >> On Mon, Jan 10, 2011 at 8:05 AM, Eric Beversluis
> >> <ebever at researchintegration.org> wrote:
> >> >
> >> > I've been accessing my Lenovo Linux laptop (my main computer) from a
> >> > Win7 laptop using NoMachine, since the screen on the Lenova is down
> >> > (hopefully to recover once the inverter I've ordered arrives).
> >> >
> >> > It seems that
> >> > 1.  When I access remotely, NoMachine starts a new session.
> >> > 2.  NoMachine cannot connect unless I have already logged into the
> >> > Lenovo.
> >> >
> >> > So my question is: What's the explanation for the fact that I need to be
> >> > logged into a session on the Lenovo before NoMachine can create a new
> >> > session? (Fortunately, even without a screen, I can type my password
> >> > into the Lenovo when Ubuntu makes its "ready" noise. But what if one
> >> > were truly running "headless"?)
> >> >
> >>
> >> I'm going to venture a guess that the NoMachine server software is
> >> actually *launched* as a process in your desktop session, so if you
> >> haven't already logged in, the server software hasn't been launched
> >> yet.
> >>
> >> For most programs, the usual solution for something like that is to
> >> have the daemon software launched as part of the init scripts, i.e.
> >> from under /etc/init.d/. I don't have any personal experience with
> >> NoMachine, though, so I don't know if it would require an X server's
> >> credentials to launch.
> >>
> >> As for the headless scenario, the simplest solution would be to run an
> >> X server which doesn't expect any real hardware, like xvfb.
> >>
> >> --
> >> :wq
> >>
> > That makes sense. Thanks.
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