[scilab-Users] Error while performing remote login: X11 connection rejected because of wrong authentication

[Sam Mathew]

Dear Sylvestre,

Are the configuration problems that you are referring to, connected with the
SSH configuration or graphics drivers' ones?

You said that it worked on your set-up. Can you share whether you also have
an NVIDIA graphics card/drivers on your local PC? As you mentioned that it
can be a configuration problem, I am wondering whether I need to install on
my PC, the same drivers as on the server for graphics? The one that I have
now is the INTEL graphics driver and the server has NVIDIA. As I mentioned
earlier, Scilab is perfectly working if I sit on the server and work.

If the issues are connected with SSH configuration, does anyone have any
suggestions where I can find some resources to fix this problem.

Thank you very much for all your assistance.

Regards,

Sam

On 25 March 2011 16:40, Sylvestre Ledru <sylvestre.ledru at scilab.org> wrote:

> Looks like a configuration problem on your side. I just tested to start
> Scilab this way and it works.
>
> You can try to force software acceleration if it fixes your graphic
> issues with intel:
> system_setproperty("jogl.gljpanel.nohw","");
>
> Sylvestre
>
> Le vendredi 25 mars 2011 à 16:32 +0530, Sam Mathew a écrit :
> > Hi,
> >
> > Thank you for the quick response but actually this has been the way I
> > have been connecting to ssh (i.e., ssh -X sam at server) so far.
> >
> > I went down to the server to see if the same problem persists if I
> > work directly on the machine, but the same message appeared.
> >
> > X11 connection rejected because of wrong authentication
> >
> > Scilab started as it did on my PC remotely. When I try to plot it
> > gives the following message: NVIDIA: could not open the device
> > file /dev/nvidiactl (Permission denied).
> >
> > Interestingly, the plotting is working though and I don't understand
> > the importance of this message then.
> >
> > But I cannot sit on the server and work but would like to work from my
> > PC remotely. Is there any solution?
> >
> > Regards,
> >
> > Sam
> >
> > On 25 March 2011 16:01, Sylvestre Ledru <sylvestre.ledru at scilab.org>
> > wrote:
> >         Hello,
> >
> >         Try to connect with
> >         ssh -X yourhost
> >
> >         it should allow the X forwarding.
> >
> >         Sylvestre
> >
> >
> >         Le vendredi 25 mars 2011 à 14:37 +0530, Sam Mathew a écrit :
> >
> >         > Hi everyone,
> >         >
> >         > I am trying to run a 64-bit SCILAB on our server from my
> >         32-bit PC in
> >         > the network and I'm connecting via ssh, with both having
> >         CentOS
> >         > (GNU/Linux). I'm doing this because the server has NVIDIA
> >         graphics
> >         > driver while my PC has only an Intel one which is not able
> >         to handle
> >         > graphics well for SCILAB in a GNU/Linux environment.
> >         >
> >         > When I run SCILAB on the server, I get the following message
> >         on the
> >         > console: X11 connection rejected because of wrong
> >         authentication
> >         >
> >         > SCILAB does start and I can do basic operations but it fails
> >         when I
> >         > try to plot anything.
> >         >
> >         > I tried to fix the problem using the solution provided on
> >         >
> >         >
> >
> http://www.cyberciti.biz/faq/x11-connection-rejected-because-of-wrong-authentication/
> >         >
> >         > I am also able to successfully run the test as given in the
> >         above link
> >         > ($ xeyes). But SCILAB still doesn't plot anything.
> >         >
> >         > Does anyone have any idea?
> >         >
> >         > Regards,
> >         >
> >         > Sam
> >         >
>  >
>
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