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

[Franziska Goltz]

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 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.

Thanks for your help!

Best,
Franziska



On 2019-11-11 10:41, Stefan Baur wrote:
> Am 08.11.19 um 09:58 schrieb Franziska Goltz:
> 
> [...]
>> debug1: Server accepts key: /Users/Franziska/.ssh/id_rsa RSA
> 
> So your key is in the default location and has the default name.  Good.
> 
> 
>> The first time I ran ssh -add -l, I got "The agent has no identities."
>> but after running ssh -add again like you described, it worked and I 
>> was
>> able to connect via x2go.
> 
> So this means either you had a typo when you specified the keyfile, or
> keyfile authentication, but not ssh-agent authentication, is currently
> broken on our macOS client.
> 
> If you want to cross-check, edit the session settings again, and enter
> 
> /Users/Franziska/.ssh/id_rsa
> 
> as the file name for the keyfile.
> 
> Then (this is important) *un-check* the "Try auto login" box again.
> 
> Next time you try to connect by clicking on the session tile, you 
> should
> see a pop-up window asking for the passphrase.
> 
> If you can't log in that way, please let us know so we can start 
> further
> investigations as to what might be going wrong.
> 
> Please also note that there is some GUI way of adding your keyfile to
> the agent, so you don't have to use the ssh-add command on the command
> line every time.  However, since I am not a Mac user myself, I do not
> know what the proper tool for this is on a Mac.
> 
> 
>> However, until now (I waited for 5-10
>> minutes), I only see a black window instead of a desktop and the
>> terminal of my server gives me this:
> 
> [...]
> 
>> I tried again, and the same thing happens, it connects but the desktop
>> doesn't load. Before I installed x2go, I did install the KDE desktop 
>> on
>> my server (at least I thought I did, but maybe something went wrong 
>> there).
> 
> Sadly, KDE5/Plasma is a Desktop environment that isn't really a good
> choice for remote desktop use. The only worse contender is Gnome3 - 
> with
> X2Go stable, it doesn't work at all, while with KDE5/Plasma, results
> vary from distribution to distribution.
> 
> Do you really need a full remote desktop, or would it be good enough 
> for
> you to be able to start remote applications in your local desktop?
> 
> If you need a full desktop, I would suggest checking out LXDE, LXQt,
> XFCE or MATE. All these are known to work with X2Go.
> 
> If you absolutely need to run KDE5/Plasma, and you can't move away from
> Ubuntu on the server side (I hear KDE5/Plasma is "kind of" working on
> Debian Buster), then I am afraid you will need to get your hands dirty 
> -
> there's a beta version of X2GoServer that you could install, and you'd
> also need the corresponding beta version of X2GoClient on your Mac (and
> I'm not even sure if we have macOS beta builds for this particular
> feature yet).  This isn't for the faint of heart, so let me know if you
> want to continue down that route.
> 
> If running remote applications is fine, then I would suggest you change
> the following settings in X2GoClient:
> 
> Click "Options" in the menu bar, then "Settings".
> The first tab, "General", should have all the options you need.
> Check the "Display Icon in System Tray" box, this un-greys the four
> checkboxes below it, check all of them as well, click "OK".
> 
> Then, back in the session configuration, change the session type from
> KDE to "Published Applications".
> 
> After that, once X2GoClient is running and has an active session,
> published apps can be accessed by right-clicking the tray icon and
> selecting the name of the session.  A left click un-hides the 
> X2GoClient
> window.
> 
> Note that on macOS, at least in earlier client builds, left click and
> right click did the same (which can be a bit annoying), so it would
> hide/unhide the client window along with showing the published
> application list.  Not sure if that has now been fixed, as, again, I am
> not a Mac user myself.
> 
> Kind Regards,
> Stefan Baur