x2go-user April 2017

x2go-user@lists.x2go.org

14 participants
19 discussions

Re: [X2Go-User] ssh kex error
by is＠k4ts.net 13 Nov '18

13 Nov '18

Am 19.10.2015 17:06, schrieb Robert Dinse: > the new version of openssh disabled certain insecure > ciphers... Version7 is what you mean. I use 6.9 on both client and server. > you can add > the following line to your /etc/ssh/sshd_config manually enable the > insecure old ciphers: > > KexAlgorithms > curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1 Adding these ciphers doesn't help - same algo error, Thats wired coz I can ssh to the server without any issues. > -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- > Eskimo North Linux Friendly Internet Access, Shell Accounts, and > Hosting. > Knowledgeable human assistance, not telephone trees or script > readers. > See our web site: http://www.eskimo.com/ (206) 812-0051 or (800) > 246-6874. > > On Mon, 19 Oct 2015, is(a)k4ts.net wrote: > >> Date: Mon, 19 Oct 2015 15:12:43 +0200 >> From: is(a)k4ts.net >> To: x2go-user(a)lists.x2go.org >> Subject: [X2Go-User] ssh kex error >> >> hi, i'm not able to connect >> to my new hardened gentoo server using x2go. >> >> No matter which key type i select for the connection, >> the client (v. 4.0.5.0) terminates with the following: >> >> kex error : no match for method server host key algo: >> server [ssh-rsa,ssh-ed25519], client [ecdsa-sha2-nistp256] >> >> I have rsa and ed25519 keys on my client and server. >> >> sshing from the shell works like always. log is attached. >> >> do you have an idea, whats might wrong? >> >> thx, >> k4t >> >> k4tfish@e10 ~ $ ssh k4tfish@host >> OpenSSH_6.9p1-hpn14v5, OpenSSL 1.0.2d 9 Jul 2015 >> debug1: Reading configuration data /etc/ssh/ssh_config >> debug1: Connecting to host.net port 51822. >> debug1: Connection established. >> debug1: identity file /home/k4tfish/.ssh/id_rsa type 1 >> debug1: key_load_public: No such file or directory >> debug1: identity file /home/k4tfish/.ssh/id_rsa-cert type -1 >> debug1: key_load_public: No such file or directory >> debug1: identity file /home/k4tfish/.ssh/id_dsa type -1 >> debug1: key_load_public: No such file or directory >> debug1: identity file /home/k4tfish/.ssh/id_dsa-cert type -1 >> debug1: key_load_public: No such file or directory >> debug1: identity file /home/k4tfish/.ssh/id_ecdsa type -1 >> debug1: key_load_public: No such file or directory >> debug1: identity file /home/k4tfish/.ssh/id_ecdsa-cert type -1 >> debug1: key_load_public: No such file or directory >> debug1: identity file /home/k4tfish/.ssh/id_ed25519 type -1 >> debug1: key_load_public: No such file or directory >> debug1: identity file /home/k4tfish/.ssh/id_ed25519-cert type -1 >> debug1: Enabling compatibility mode for protocol 2.0 >> debug1: Local version string SSH-2.0-OpenSSH_6.9p1-hpn14v5 >> debug1: Remote protocol version 2.0, remote software version >> OpenSSH_6.9p1-hpn14v5 >> debug1: match: OpenSSH_6.9p1-hpn14v5 pat OpenSSH* compat 0x04000000 >> debug1: Authenticating to host...net:51822 as 'k4tfish' >> debug1: SSH2_MSG_KEXINIT sent >> debug1: SSH2_MSG_KEXINIT received >> debug1: AUTH STATE IS 0 >> debug1: REQUESTED ENC.NAME is 'chacha20-poly1305(a)openssh.com' >> debug1: kex: server->client chacha20-poly1305(a)openssh.com <implicit> >> none >> debug1: REQUESTED ENC.NAME is 'chacha20-poly1305(a)openssh.com' >> debug1: kex: client->server chacha20-poly1305(a)openssh.com <implicit> >> none >> debug1: expecting SSH2_MSG_KEX_ECDH_REPLY >> debug1: Server host key: ssh-ed25519 SHA256:xyz >> debug1: Host '[host.net]:51822' is known and matches the ED25519 host >> key. >> debug1: Found key in /home/k4tfish/.ssh/known_hosts:203 >> debug1: SSH2_MSG_NEWKEYS sent >> debug1: expecting SSH2_MSG_NEWKEYS >> debug1: SSH2_MSG_NEWKEYS received >> debug1: Roaming not allowed by server >> debug1: SSH2_MSG_SERVICE_REQUEST sent >> debug1: SSH2_MSG_SERVICE_ACCEPT received >> debug1: Authentications that can continue: >> publickey,password,keyboard-interactive >> debug1: Next authentication method: publickey >> debug1: Offering RSA public key: /home/k4tfish/.ssh/id_rsa >> debug1: Server accepts key: pkalg ssh-rsa blen 279 >> debug1: Authentication succeeded (publickey). >> Authenticated to host ([123.123.456.7]:51822). >> debug1: Final hpn_buffer_size = 2097152 >> debug1: HPN Disabled: 0, HPN Buffer Size: 2097152 >> debug1: channel 0: new [client-session] >> debug1: Enabled Dynamic Window Scaling >> debug1: Requesting no-more-sessions(a)openssh.com >> debug1: Entering interactive session. >> debug1: client_input_global_request: rtype hostkeys-00(a)openssh.com >> want_reply 0 >> debug1: Sending environment. >> debug1: Sending env LC_COLLATE = C >> debug1: Sending env LANG = en_US.utf8 >> >> _______________________________________________ >> x2go-user mailing list >> x2go-user(a)lists.x2go.org >> http://lists.x2go.org/listinfo/x2go-user >>

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Emacs crashes on start
by Roderick Johnstone 18 Sep '17

18 Sep '17

Hi I'm connecting from a Mac (X2Go Client v. 4.0.5.1 (Qt - 4.8.7)) to Fedora 24 with a xfce session using the x2goserver-4.0.1.19-11.fc24.x86_64 packages from the fedora repos. On starting emacs, I get the error below. This issue seems to have been around for a while in similar forms, but didn't affect me under Fedora 22. Is anyone in a position to confirm this issue on Fedora 24 and suggest a work around? I tried setting various environment variables suggested on various web pages for similar issues and in the bug report noted in the error message (and checked /etc/PROBLEMS), but nothing was effective. emacs starts fine in an xfce session at the console. Thanks Roderick Johnstone X protocol error: BadRequest (invalid request code or no such operation) on protocol request 131 When compiled with GTK, Emacs cannot recover from X disconnects. This is a GTK bug: https://bugzilla.gnome.org/show_bug.cgi?id=85715 For details, see etc/PROBLEMS. Fatal error 6: Aborted Backtrace: emacs[0x50ad3c] emacs[0x4f11ec] emacs[0x50ade3] emacs[0x4c0f60] emacs[0x4c58b6] emacs[0x4c593b] /lib64/libX11.so.6(_XError+0x12d)[0x2b5baa0ff57d] /lib64/libX11.so.6(+0x413e7)[0x2b5baa0fc3e7] /lib64/libX11.so.6(+0x414ad)[0x2b5baa0fc4ad] /lib64/libX11.so.6(_XReply+0x238)[0x2b5baa0fd478] /lib64/libX11.so.6(XQueryPointer+0x91)[0x2b5baa0f3351] /lib64/libgdk-3.so.0(+0x4da2a)[0x2b5ba8150a2a] /lib64/libgdk-3.so.0(+0x6a605)[0x2b5ba816d605] /lib64/libgdk-3.so.0(gdk_window_get_device_position_double+0x10b)[0x2b5ba8143d1b] /lib64/libgdk-3.so.0(gdk_window_get_device_position+0x2d)[0x2b5ba8143e1d] /lib64/libgtk-3.so.0(+0x321199)[0x2b5ba7b48199] /lib64/libgtk-3.so.0(+0x3216f4)[0x2b5ba7b486f4] /lib64/libgdk-3.so.0(+0x253d8)[0x2b5ba81283d8] /lib64/libglib-2.0.so.0(+0x4a173)[0x2b5ba97d0173] /lib64/libglib-2.0.so.0(g_main_context_dispatch+0x163)[0x2b5ba97cf703] emacs[0x5e0b78] emacs[0x5a6025] emacs[0x4fc1bc] emacs[0x4fdfdd] emacs[0x4ffc24] emacs[0x564642] emacs[0x4f16b4] emacs[0x5645e3] emacs[0x4f1670] emacs[0x4f5e6b] emacs[0x4f61c8] emacs[0x419b52] /lib64/libc.so.6(__libc_start_main+0xf1)[0x2b5bb17db731] emacs[0x41a639] Aborted (core dumped)

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Logging x2go connections?
by Grigory Shamov 04 May '17

04 May '17

Hi All, This perhaps is a trivial question: but is it possible to somehow log/check history of past x2go session on the server? -- Grigory Shamov Westgrid/ComputeCanada Site Lead University of Manitoba E2-588 EITC Building, (204) 474-9625

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Spoke too soon
by Robert Dinse 30 Apr '17

30 Apr '17

Found one other thing that isn't working, the normal menu I get under Ubuntu Mate when I right click the mouse on the background. The menus on the top bar work but not those on the background. -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- Eskimo North Linux Friendly Internet Access, Shell Accounts, and Hosting. Knowledgeable human assistance, not telephone trees or script readers. See our web site: http://www.eskimo.com/ (206) 812-0051 or (800) 246-6874.

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Zesty
by Robert Dinse 30 Apr '17

30 Apr '17

I have re-installed a fresh install of Zesty-Mate on my old Mac Pro 1,1. I had to modify the ISO to work with my odd ball 64-bit CPU but 32-bit BIOS, but other than that it is stock Zesty Mate. I then installed all the tools and dependencies to build the Arctica 3.5.99 version of nx-libs, and installed those. I thehn installed the Nightly Builds version of x2go client and server. Almost everything works, enough for the functionality I need. The only thing that does not work is the background does not get set when I login, it remains block. But I can manually set it and then it works fine. So something is still broke but I don't need a pretty background for things to be functional, so the important things are working for me now. -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- Eskimo North Linux Friendly Internet Access, Shell Accounts, and Hosting. Knowledgeable human assistance, not telephone trees or script readers. See our web site: http://www.eskimo.com/ (206) 812-0051 or (800) 246-6874.

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Thin/Zero-client solution with desktop feel (video streaming)
by Lars Bonnesen 28 Apr '17

28 Apr '17

Having a setup where I would like to run 10-20 zero-clients (like ThinStation). Users would like to connect to a Windows desktop and stream various videos from services like youtube. I have been setting up ThinStation where a number of test PC's boots directly into FreeRDP and connects to a Windows 2016 RDS-server. It works well except for the streaming part. One single client in full screen fills up 100% of two of the Win2016 RDS 4 Xeon CPUs! I am aware of MS' RemoteFX but this requires HyperV. We are running VMware, and for this, you will have to use Horizon and PCoIP/Blast. Only... the license price for this is simply outrageous. As we would like to keep our VMware virtualization, going to MS' HyperV is something we would be very sad about just because of this. I have been working with NoMachine before, and as I remember, it worked very well with video streaming from the NX client... I was going to try this again, but reading about it, I found numerous places where people wrote "Hey!!! No, no, no... try x2go instead... this is a fork of NoMachine". Ok... this was what I did then. Installed x2go on a CentOS, downloaded the x2go client only to experience that streaming like with FreeRDP and RDS work just as bad. Apart from this, I really liked x2go, and if I am able to get a much better desktop feel with full screen streaming, I would definitely force our users to use this Open Source solution instead. Can anyone in here suggest a way to setup x2go to perform better with streaming like if we used a setup that could handle H.264? Regards, Lars.

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Ubuntu-Mate 17.04 Zesty x2go server borked
by nanook＠eskimo.com 26 Apr '17

26 Apr '17

On a fresh install of Ubuntu-Mate 17.04, after doing updates but before installing any other software other than that which installs by default, I installed x2goserver, x2goserver-xsession, and x2goclient per the instructions on the x2go website. The client works fine, the server has the normal issue with modern Linux's wanting a newer version of xrandr and gives me a 800x600 window even if I specify the full display 1. I can resize the screen using xrandr -s 1920x1080 from a terminal window. I tried installing the Arctica Libs for xenial, this worked on servers which I installed as older versions of Ubuntu and upgraded online but does not work for a fresh install. Doing so results in a disconnect before the screen is drawn. At someone's suggestion here, I built nx-libs from source on Zesty and installed, still disconnects before drawing screen. It does give a small screen which then expands to the full screen size but is black save for the letters X2GO, but it disconnects before drawing the desktop. This is using Mate, the 18.01 version that ships with Zesty. I have attached to files of the output of x2goclient --debug, x2go-debug-good-server.out is what happens when I connect to an x2go server on Zesty 17.04 that has been upgraded from an earlier version and has the xenial arctica nx-libs installed and works. x2go-debug.out is when I connect to the server where I've built the Arctica nx-libs from source, they are version 3.5.99.6-0.1. Thanks for your help.

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x2goserver on Ubuntu 17.04 Zesty
by Robert Dinse 25 Apr '17

25 Apr '17

I have not been successful at getting x2go to work consistently on machines I have upgraded to Ubuntu 17.04, oddly it works on some and not others. I have two machines on which it appears to work fine and two which it does not, one of those it just gives me a black screen and the other it immediately exits. On the machine that it immediately exits it prints some error messages but the client exits too fast to read them. I can't figure out if and where x2go logs erros. I do see some things in the syslog but indicates it is starting the session successfully when obviously it is not. -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- Eskimo North Linux Friendly Internet Access, Shell Accounts, and Hosting. Knowledgeable human assistance, not telephone trees or script readers. See our web site: http://www.eskimo.com/ (206) 812-0051 or (800) 246-6874.

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Ubuntu 17.04
by Robert Dinse 25 Apr '17

25 Apr '17

On a machine that x2go was not working, I did a fresh install of Ubuntu Mate 17.04 then only did upgrades. Then I installed x2goserver, x2goserver-xsession, and x2goclient. It worked except that it gave me an 800x600 screen unless I manually reset it using xrandr -s 1680x1050 from the command line. I then installed arctica project Sunweaver's Net nx-libraries, and now it exploded when it tried to connect. I backed out those libs and it worked again. So something has changeed, yet, on two other machines I have arctica project's libs installed and all is well. The only difference is that those machines started out life as 14.04 and were upgraded in place to 17.04, as opposed to being fresh installs. -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- Eskimo North Linux Friendly Internet Access, Shell Accounts, and Hosting. Knowledgeable human assistance, not telephone trees or script readers. See our web site: http://www.eskimo.com/ (206) 812-0051 or (800) 246-6874.

1 0

x2go display not opening on windows 10
by Gladia Hotan 24 Apr '17

24 Apr '17

Hi, After a recent windows 10 update, my x2go window no longer opens. The taskbar icon appears and the program is shown as 'running' in task manager, but there is no display window. Any ideas how to fix this? Thanks and best regards, Gladia

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x2go-user April 2017