x2go-user November 2016

x2go-user@lists.x2go.org

22 participants
25 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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multiwindow option and resizing an application window
by Dionne, Dennis P 09 Mar '17

09 Mar '17

Hello, I am using X2Go on RHEL 6.7 and I am very pleased with how well it works but I am having an issue when using X2Go with a custom application when I resize the application window. There are hundreds of other applications on our system that have no issue with resizing, it' just this one. This will happen every time I resize the app IF AND ONLY IF I start vcxsrv with "-multiwindow", if I start it any other way (-rootless, -fullscreen, -multimonitor) the app will resize fine. The problem is I then cannot resize the session window (resizing is only available in multiwindow mode apparently?). I am 100% aware that the application in question is at fault, however, it is very old, was produced by another company that will not give me the code and refuses to update it... I am also aware that this may be a VCXSrv issue and I can ask them as well but I was wondering if you all had run across something like this before. If you could give me some background on the differences between multiwindow vs "non-multiwindow" or could explain why multiwindow would fail I'd appreciate it. That may be a question for VCXSrv though. Setup: RHEL 6.7 X2Go Windows Client 4.0.5.1 (Windows 7 64bit) Server 4.0.1.19 Gnome 2.28 Thanks Dennis

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Shared Folders?
by KARL A. WOELFER 25 Jan '17

25 Jan '17

I am not able to get the basic Shared Folder capability to run. Debian 7 Linux OS on client and server, X2go V 4.0.3.0, and XFCE Desktop. Is there something fundamental preventing this from working? Thanks in advance, - KarlW

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GTK+ pull-down menus not displayed
by Tristan Miller 29 Dec '16

29 Dec '16

Greetings. Lately whenever I launch GTK+ applications over x2go, the pull-down menus are usually not displayed properly or at all. For example, if I launch the Xfce Terminal, I see the usual "File", "Edit", "View", "Terminal", "Tabs", and "Help" labels in the pull-down menu bar. If I click on these, they become underlined as though they are active, but the corresponding pull-down menu doesn't (usually) appear. Instead, a single pixel in the upper left corner of my desktop turns white. The only exception is when I click on "Help" -- the first time I do this, I do get a pull-down menu, but it's attached to the upper left corner of my desktop, not to the "Help" label in the Terminal window. The menu is very small, though, and I need to scroll through it to see all the entries. The second or subquent times I try to view the "Help" menu, I just get a single pixel. Similar behaviour is observed in most other GTK+2 and GTK+3 applications, such as the GNOME Terminal and the GNOME Character Map. The problem is reproducible when launhcing LibreOffice with SAL_USE_VCLPLUGIN=gtk2 or SAL_USE_VCLPLUGIN=gtk3, but not with SAL_USE_VCLPLUGIN=kde4 or SAL_USE_VCLPLUGIN=gen. Some (but not all) of the applications output error messages like this to the console when I try to activate a pull-down menu: (gucharmap:26208): Gtk-CRITICAL **: gtk_widget_get_preferred_height_for_width: assertion 'width >= 0' failed (gucharmap:26208): Gtk-CRITICAL **: gtk_widget_get_preferred_height_for_width: assertion 'width >= 0' failed (gucharmap:26208): Gtk-CRITICAL **: gtk_widget_get_preferred_height_for_width: assertion 'width >= 0' failed (gucharmap:26208): Gtk-WARNING **: Negative content width -7 (allocation 1, extents 4x4) while allocating gadget (node arrow, owner GtkMenu) (gucharmap:26208): Gtk-WARNING **: Negative content width -7 (allocation 1, extents 4x4) while allocating gadget (node arrow, owner GtkMenu) Claws Mail seems to be an exception; it uses GTK+ but its pull-down menus work fine. Anyone know what the cause might be and how I can work around it? I'm running x2goserver-4.0.1.19 on an openSUSE Tumbleweed server and x2goclient-4.0.5.0 on an openSUSE 13.2 client. The client desktop environment is KDE 5. Regards, Tristan -- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Tristan Miller Free Software developer, ferret herder, logologist https://logological.org/ =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

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x2Go Font / Color error
by James M. Pulver 12 Dec '16

12 Dec '16

A user of ours has an issue: I get the error below when trying to run some custom programs over x2go. Is there a known workaround? I do not have this problem with Remmina remote desktop with VNC. Thanks, mjf7@sl6 plotf $ anevent small Today is day 310 File $LOG/event_wat/2016/ev310_13_51_52.out Orbit number: 1133355 X Error of failed request: BadName (named color or font does not exist) Major opcode of failed request: 45 (X_OpenFont) Serial number of failed request: 13 Current serial number in output stream: 16 The client computer is running some flavor of Ubuntu, the server computer is running Scientific Linux 6.8. Any ideas? -- James Pulver CLASSE Computer Group Cornell University

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print howto ?
by Christophe Massez 02 Dec '16

02 Dec '16

Hi, Sorry to came here and to post immediately, but since a long time I stuck on print feature. I'm coming from this page : http://wiki.x2go.org/doku.php/doc:installation:printing So on the server side, I'm here : - all needed packages are installed - printer installed like show below from my printers.conf : <Printer Virtual_X2Go_Printer> UUID urn:uuid:639ac42a-5341-3075-78ff-4f442068609e Info Virtual X2Go Printer Location MakeModel Generic CUPS-X2Go Printer DeviceURI cups-x2go:/ State Idle StateTime 1480012787 Type 8450124 Accepting Yes Shared No JobSheets none none QuotaPeriod 0 PageLimit 0 KLimit 0 OpPolicy default ErrorPolicy abort-job </Printer> Now... I'm completely lost for the client side : I don't understand what should I do next. I try to install locally cups-x2go, configure printer like on the server and print on it, nothing happend and I dont know if is the good way to use my local printer. I search a lot - for sure I miss something somewhere / maybe I'm completely ass :-( Any start will be very helpfull, what do you think ? Justin

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usbip
by "BOTZ Franck (Administrateur Systèmes et Résea ux) - DDT 67/SIDSIC/Pôle Infra" 29 Nov '16

29 Nov '16

Hi. I want to plug a webcam on my x2goclient and use it on the x2goserver. Is it possible ? Regards Franck

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Folder sharing
by "BOTZ Franck (Administrateur Systèmes et Résea ux) - DDT 67/SIDSIC/Pôle Infra" 29 Nov '16

29 Nov '16

Hi ! So, there is my configuration : Terminal Hardware : HP t620 HP Thinpro (ubuntu 14.04 base) x2goclient 4.0.5.3 Broker Ubuntu server 16.04 64 LTS python-x2gobroker 0.0.3.1-0~934~ubuntu16.04.1 all X2Go Session Broker (Python modules) x2gobroker 0.0.3.1-0~934~ubuntu16.04.1 all X2Go Session Broker (executable) x2gobroker-loadchecker 0.0.3.1-0~934~ubuntu16.04.1 all X2Go Session Broker (load checker service) x2gobroker-ssh 0.0.3.1-0~934~ubuntu16.04.1 amd64 X2Go Session Broker (SSH broker) Server : Ubuntu Desktop 16.04 64 LTS libx2go-log-perl 4.1.0.0-0~1359~ubuntu16.04.1 all Perl X2Go::Log package libx2go-server-db-per 4.1.0.0-0~1359~ubuntu16.04.1 amd64 Perl X2Go::Server:DB package libx2go-server-perl 4.1.0.0-0~1359~ubuntu16.04.1 all Perl X2Go::Server package x2goagent 2:3.5.0.33-0~687~ubuntu16.04.1 all X2Go agent x2gobroker-agent 0.0.3.1-0~934~ubuntu16.04.1 amd64 X2Go Session Broker (remote agent) x2goclient 4.0.5.1-0~1103~ubuntu12.04.1 amd64 X2Go Client application (Qt4) x2goserver 4.1.0.0-0~1359~ubuntu16.04.1 amd64 X2Go server daemon scripts x2goserver-common 4.1.0.0-0~1359~ubuntu16.04.1 amd64 X2Go Server (common files) x2goserver-extensions 4.1.0.0-0~1359~ubuntu16.04.1 all X2Go Server (extension support) x2goserver-fmbindings 4.1.0.0-0~1359~ubuntu16.04.1 all X2Go Server (file manager bindings) x2goserver-printing 4.1.0.0-0~1359~ubuntu16.04.1 all X2Go server (printing support) x2goserver-xsession 4.1.0.0-0~1359~ubuntu16.04.1 I can connect from my t620 to the server trough the broker. I can resum/suspend a session. The system is functionnal. My next step is sharing a folder on the t620 (the folder used to mount a mass storage /tmp/tmpfs/media and access to it from the session open on the server. On the broker, my x2gobroker-sessionprofiles.conf : [DEFAULT] defsndport=true useiconv=false iconvfrom=UTF-8 #height=600 export= quality=9 #fullscreen=true #layout= #model= useexports=true #width=800 speed=2 soundsystem=pulse print=false sndport=4713 xinerama=true variant= usekbd=true fstunnel=true applications= multidisp=false sshproxyport=22 sound=true rootless=true iconvto=UTF-8 soundtunnel=true dpi=96 sshport=22 setdpi=0 pack=16m-jpeg directrdp=false user= [xfce] host=x2go-server-01 (10.0.0.1) name=XFCE command=XFCE type=auto fullscreen=true xinerama=false export="/tmp/tmpfs/media:1" broker-session-autologin=false usebrokerpass=true As you can see, in the xfce section, I export the "/tmp/tmpfs/media:1" directory. On the t620 my mass storage is mounted on /tmp/tmpfs/media/SomeUsbStick and I access it with the user who launch the x2goclient. When the session openned I see on the server : * the time to open session is longer with the export directive * the media directory appears is home directory * the media contained disk/_tmp_tmpfs_media directory * When I list _tmp_tmpfs_media i have "permission denied" * the mount command let me see (but brievely) a line like user(a)127.0.0.1 ... * the trash disappear So what can I do to access to my USB mass storage stick ? Sincerly Franck

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x2go-user November 2016