x2go-user January 2018

x2go-user@lists.x2go.org

22 participants
23 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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It might be that we already have KDE5/Plasma support ...
by Stefan Baur 01 Oct '18

01 Oct '18

Hi $LIST, According to Mike#1, who currently attends DebConf in Montreal, Debian 9 + X2Go Stable + KDE5/Plasma have been shown to work together. This is a single report so far, though. If anyone is willing and able to test and confirm this, it would be highly appreciated. Another test result we'd be interested in would be what happens if you use Arctica NX-Libs and X2Go Heuler instead of X2Go Stable. Kind Regards, Stefan Baur -- BAUR-ITCS UG (haftungsbeschränkt) Geschäftsführer: Stefan Baur Eichenäckerweg 10, 89081 Ulm | Registergericht Ulm, HRB 724364 Fon/Fax 0731 40 34 66-36/-35 | USt-IdNr.: DE268653243

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x2go Windows Client: Strange Issue with Screen Update
by Michael Klemm 10 Mar '18

10 Mar '18

Dear x2go-user list, I'm having trouble with the x2go Windows client on one of my machines. It seems that it misses some screen updates (see the attached screen shot). The screen was made after a I typed "ls" a few times. After I reconnect the session, the screen is updated properly once and then subsequent updates are missing again. This is on Windows 10 Pro (version 1709) and x2go client 4.1.1.1 (nightly build 2017-11-14). The error also happens with the 4.1.0 client. The server is a CentOS 7.4 box with x2goserver-4.0.1.20-1.el7.x86_64, the desktop is KDE. The same client version works perfectly on another Windows machine, so I doubt that the server or KDE is the culprit. If someone could provide me with a hint how to debug this issue to create a bug report, I'd appreciate it. Thanks! Kind regards, -michael

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unable to start Qt/KDE apps under x2go
by Tomasz Chmielewski 22 Feb '18

22 Feb '18

Any Qt/KDE apps I start renders just a border and nothing else - see the screenshot: https://screenshots.firefox.com/GhM80HJvhnCV9TDu/null Not sure how to debug this? $ kate failed to get the current screen resources QXcbConnection: XCB error: 172 (Unknown), sequence: 169, resource id: 174, major code: 149 (Unknown), minor code: 20 Server - Ubuntu 17.10 64 bit: $ dpkg -l|grep x2go ii x2goagent 2:3.5.0.33-0~710~ubuntu17.10.1 all X2Go agent ii x2goserver 4.0.1.22-0~1197~ubuntu17.10.1 amd64 X2Go server daemon scripts ii x2goserver-extensions 4.0.1.22-0~1197~ubuntu17.10.1 all X2Go server daemon scripts (extensions) ii x2goserver-xsession 4.0.1.22-0~1197~ubuntu17.10.1 all X2Go server daemon scripts (Xsession runner) Client - Ubuntu 17.10 64 bit: $ dpkg -l|grep x2go ii x2goclient 4.1.0.0-1 amd64 X2Go Client application (Qt4) Tomasz Chmielewski https://lxadm.com

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Re: [X2Go-User] Windows x2go client displays at incorrect resolution
by Davis, Jean-Paul 18 Feb '18

18 Feb '18

I have not followed up in the past nine months because my remote sessions are somewhat useable in the current state, but it still annoys me to no end, so I just tried looking at it some more. I do not have a solution. Here is a recap of what I have and have not figured out. When the Windows client display preferences are set to full screen (everything else default), the remote desktop session that appears on the client's physical display thinks it is connected to the "default" video output, for which xrandr (run in a terminal window, inside the remote desktop session) shows a maximum resolution of 1920x1200, with a resolution of 1280x720 selected, which is exactly half the width and half the height of the physical display on the client (2560x1440). The xdpyinfo command reports a dpi of 75. If I set the client preferences to 192 dpi (corresponding to physical display on client), the resulting remote desktop session is still 1280x720, but all elements are scaled up by a factor of 2. It is my understanding that this is the default scaling generated by X when it detects (or is given) a dpi larger than some value that it considers to be hi-dpi. I have seen suggestions about creating a new display section in xorg.conf on the server for a virtual monitor, but most people report that does not work. I am not knowledgeable enough to understand exactly how x2go interacts both with the X-server on the x2go server (RHEL 7.4) and with the X-server (VcXsrv) on the x2go client (Windows 10). I'm thinking that somehow, if possible, I need to change the "default" video output used by one or the other of those X-servers to allow 2560x1440 resolution. Does anyone know how to do this? Even if I get that to work, I may still have an issue getting the MATE desktop to use my desired hi-dpi scaling (instead of just forcing everything to double). Inside the remote MATE desktop, I am not able to change any display preferences; it always produces an error related to the versions of xrandr (display preferences requires at least 1.3, server version is 1.2, though program I'm actually running is 1.5). And would it be worth my time to try again building x2go from the Arctica project? Jean-Paul

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Upcoming Deprecation of (Almost) EOL Distributions
by Mihai Moldovan 07 Feb '18

07 Feb '18

Hi In order to lower resource stress when building packages, I plan to deprecate support for distributions that have (almost) reached End Of Life on December 31th 2017. This includes the following distro versions: - Debian: o 7.0 "wheezy" - Fedora o 23 o 24 o 25 - OpenSuSE o 13.1 o 13.2 o 42.1 Ubuntu builds are ceased automatically after upstream deprecation. After deprecation, no new builds will be published and existing builds will be moved to the archive repositories to discourage users from installing unmaintained software. Mihai

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Gnome 3 and X2go
by Robert Dinse 31 Jan '18

31 Jan '18

When gnome3 first came out I was unsuccessful at getting it to work with x2go. However, I just tried installing gnome-flashback and gave it another shot, now it mostly works except I can find no way of logging out except to kill the gnome-flashback process. Am I missing something that should be installed or is it broken this way? -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- 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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TCE usb mount
by Widu Wittekindt 29 Jan '18

29 Jan '18

Hi again, now that the netboot image builds just fine even on a stretch build host, I have another problem - well I've got a problem for every solution :-) My client doesn't mount usb media, with any of the images I made, regardless of the distribution (stretch or jessie) or the repo (code.x2go.org or LinuxHaus) or the build host (stretch or jessie). But the usb mount works with an image I got from a friend here in Freiburg - but this is a jessie image and one of my clients will not boot with a 3.16 kernel :-( Of course I think I did everything just as I should: 1. put the config as a script in the BUILDDIR 2. put the usb mount patch as a script in the BUILDDIR 3. put the build-script in the BUILDDIR 4. source the config 5. call the patch script 6. call the build script. What am I doing wrong? And theres a second question: Is it possible to output the sound on the x2go-server? cheers Widu

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Can't get full screen on Raspberry PI
by Blake McBride 25 Jan '18

25 Jan '18

Hi, I have a Raspberry PI running their latest OS (9.1 Stretch) And I am running x2goclient 4.1.1.0 I can't seem to get full screen. If I set x2goclient and set it to Display Fullscreen, it starts up and works fine except that it is a window on my screen (having a head line with minimize, atc. buttons). Then when I exit, it changed the config to Custom 1920x1078. In fact I just noticed that if I select "Fullscreen" and then click "OK", when I go back in, it's changed to Custom 1920x1078. Same thing with Display Use whole display. Nothing I do will make "Fullscreen" stick. Not having any problems on my LinuxMint box. Thanks for any help! Blake McBride

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x2go client GUI does not display on Windows 10
by Gladia Hotan 25 Jan '18

25 Jan '18

Hi, When I run x2go client on windows 10, the icon pops up on the taskbar and the process is running, but the GUI window does not display. I tried uninstalling and reinstalling several times and also tried the suggestions at this link <https://askubuntu.com/questions/593046/x2go-client-not-showing-gui>, but the GUI still does not appear. I also tried changing my screen resolution in case the GUI window was being drawn offscreen, but the GUI still does not appear. How can I troubleshoot this further? Best, Gladia

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x2go-user January 2018