[X2Go-User] Can't solve error: "Access denied. Authentication that can continue: publickey, password"

[Mike Gabriel]

HI Franziska,

On  Di 12 Nov 2019 12:51:12 CET, Franziska Goltz wrote:

> Hi all,
>
> I cross-checked but when I try to log in with the "try auto login"  
> box unchecked, I get the following error again:
>
> Access denied. Authentication that can continue: publickey,password
> Access denied. Authentication that can continue: publickey,password

I have seen this with "try auto login" and ssh-agent usage in X2Go  
Client a lot of times.

This IMHO is a bug in libssh and needs investigation.

> I am trying to use XFCE now, installed the xfce desktop on my server  
> with "sudo apt install -y xubuntu-desktop", but when I try to start  
> the session, a window (black window with "X2Go" in it" just quickly  
> opens and then immediately closes again so no succes here either  
> unfortunately. I get these warnings:
>
> Loop: WARNING! Unrecognized session type 'unix-kde-depth_32'.  
> Assuming agent session.
> Warning: Unrecognized session type 'unix-kde-depth_32'. Assuming  
> agent session.
> Loop: WARNING! Could not retrieve the X server authentication cookie.
> Warning: Failed to read data from the X auth command.
> Warning: Generated a fake cookie for X authentication.

This should actually work.

X2Go Client is a bit silent about why things fail during session startup.

Please start x2goclient from the cmdline with "x2goclient --debug" and  
maybe the debug output is more revealing about what is failing.

Just out of curiosity, does the X2Go session startup work from a Linux  
machine (if at hand). It is always good to determine, if a problem  
comes from a client or from a server.

On Linux, you can also try a session startup with heavy debugging  
results using the pyhoca-cli command line client for X2Go:

   pyhoca-cli --libdebug --server <hostname> --port <port> --user  
<user> --command XFCE

If the problem is server-side, this would be my next debugging step.

Greets,
Mike
-- 

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