On Jun 15, 2012, at 4:55 PM, Dellwo, Martin J. [JRDUS] wrote:
> Hi there,
> I am piloting my own instance of CloudMan in Amazon Web Services, using the
> current public AMI (according to your Wiki), AMI: ami-da58aab3 and Name:
> I’d like to either tunnel X11 through SSH (either PuTTY on Windows, or just
> at a Linux prompt with “ssh –X”), or use an NX client to connect. I’m very
> familiar with how to do both, and have tested both locally. I have a local X
> server (latest XMing) on my Windows box, latest PuTTY, latestnomachine.com NX
> client. When I first start up CloudMan and login as user ‘ubuntu’, it asks
> if I would like to set up NX, and I’ve added myself as a user there. I can
> log in as that user via normal SSH connection.
> I can’t seem to either tunnel X11 over SSH or connect w/ NX. NX connects up
> through the initial stage and asks me for my password, but doesn’t start a
> desktop. Trying to tunnel X11 (xclock command) just sits forever (either via
> PuTTY or just normal “ssh –X” at a Linux command line). I see that Xvfb is
> running, and I can use ‘xwd’ to see an image of what is in the virtual frame
> buffer, ie the xclock window. It does seem like not all the required packages
> are installed, or possibly I just need to start a different service.
Xvfb is a fake display, the fact that your xclock is appearing on the virtual
framebuffer rather than over your tunneled SSH connection suggests that
$DISPLAY is being overwritten after you log in, or ssh is incorrectly choosing
a display ID that is identical to the ID that Xvfb is using.
I can't say much about NX, unfortunately, since I have never used it.
> Should I expect that either tunneling or NX works ‘out of the box’, or are
> there more packages I need to install and configure? Any tutorials or
> pointers out on the web?
> Thanks. I did search mail archives. :)
> Martin J. Dellwo, Ph.D.
> Manager, Translational Informatics
> Janssen Research & Development, LLC
> Information Technology
> Welsh & McKean Roads, Spring House, PA 19477
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