x2go-dev July 2021

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83 discussions

Bug#1421: journalctl flooded with ssh_channel_accept: No channel request of this type from server
by Sorin T 10 Apr '23

10 Apr '23

Package: x2goclient Version: 4.1.2.1 This output is shown continuously. I have also disabled the Media and the Shared folders options. [2019/12/05 12:21:49.755356, 1] ssh_channel_accept: No channel request of this type from server [2019/12/05 12:21:49.844514, 1] ssh_channel_accept: No channel request of this type from server [2019/12/05 12:21:49.844968, 1] ssh_channel_accept: No channel request of this type from server [2019/12/05 12:21:50.345651, 1] ssh_channel_accept: No channel request of this type from server [2019/12/05 12:21:50.846330, 1] ssh_channel_accept: No channel request of this type from server [2019/12/05 12:21:51.347011, 1] ssh_channel_accept: No channel request of this type from server [2019/12/05 12:21:51.354536, 1] ssh_channel_accept: No channel request of this type from server [2019/12/05 12:21:51.355837, 1] ssh_channel_accept: No channel request of this type from server [2019/12/05 12:21:51.358011, 1] ssh_channel_accept: No channel request of this type from server [2019/12/05 12:21:51.858687, 1] ssh_channel_accept: No channel request of this type from server [2019/12/05 12:21:52.359381, 1] ssh_channel_accept: No channel request of this type from server [2019/12/05 12:21:52.860074, 1] ssh_channel_accept: No channel request of this type from server [2019/12/05 12:21:53.360787, 1] ssh_channel_accept: No channel request of this type from server It could be a ssh config problem ? I am using on client machine: OpenSSH_8.1p1, OpenSSL 1.1.1d 10 Sep 2019 Guest OS: Debian based Guest ssh version: OpenSSH_7.9p1 Debian-10, OpenSSL 1.1.1d 10 Sep 2019 Guest x2goserver: 4.1.0.3-4 Sent with [ProtonMail](https://protonmail.com) Secure Email.

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Bug#1541: x2go graphics issue on MacOS Big Sur
by Kailin Zhuang 12 Aug '22

12 Aug '22

Package: x2goclient Version: 4.1.2.1 I'm using X2Go to run scientific software on our campus compute cluster (since 2019). I recently installed X2Go on a new MacBook Pro 2020 with the M1 chip running Big Sur. Immediately after launching X2Go, the following message repeats about 10 times per minute until I close X2Go: com.apple.xpc.launchd[1] (com.apple.mdworker.shared.XXX): Service exited due to SIGKILL | sent by mds[499]\ When I start Matlab (a scientific application I use for research), the x2go window turns black and becomes unusable. I'm enclosing a screenshot. The same Matlab software works as expected (no display problems) when I run it remotely via ssh (with X11 forwarding enabled) instead of X2Go.

2 1

Bug#1194: TERM variable not set
by Patryk P 12 Mar '22

12 Mar '22

Package: X2Go Client v. 4.1.0.0 (Qt - 4.8.6.) for windows 7 32bit Console output: [image: 2017-07-15 10_15_28-X2Go Client (Debug).png]

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Bug#1556: GPG key error: public key E1F958385BFE2B6E is not available
by Chatterjee, Saion 15 Nov '21

15 Nov '21

Package: x2goserver Severity: critical Unable to install x2Go packages for Debian because the repository archive key is not available. When I try to bootstrap the repository GPG keys using the docs: https://wiki.x2go.org/doku.php/wiki:repositories:debian with this command: apt-key adv --recv-keys --keyserver keys.gnupg.net E1F958385BFE2B6E Then I receive the following error message: GPG error: http://packages.x2go.org/debian stretch InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY E1F958385BFE2B6E gpg: keyserver receive failed: No name It was working fine till last month. Please check if the public key has changed. I mark this ticket as critical because at the moment we are unable to even install x2Go for new users. Regards, Saion

2 3

Bug#1427: Update Tumbleweed packages for Perl 5.30
by Tristan Miller 28 Sep '21

28 Sep '21

Package: x2goserver Version: 4.1.0.4 Tags: rpm-packages Various openSUSE Tumbleweed packages for the X2Go server are built in such a way that they require Perl 5.28.1. However, Tumbleweed no longer distributes that version of Perl; it now distributes only Perl 5.30.1. This means that it is impossible to install these X2Go server packages on the most recent release of Tumbleweed, and for Tumbleweed systems where those X2Go server packages were already installed, it is impossible to upgrade Tumbleweed without removing the X2Go server: $ sudo zypper dup [sudo] password for root: Loading repository data... Reading installed packages... Warning: You are about to do a distribution upgrade with all enabled repositories. Make sure these repositories are compatible before you continue. See 'man zypper' for more information about this command. Computing distribution upgrade... 9 Problems: Problem: x2goserver-common-4.1.0.4-0.0x2go1.0.git20191106.1811.heuler.x86_64 requires perl(:MODULE_COMPAT_5.28.1), but this requirement cannot be provided Problem: perl-5.28.1-3.4.x86_64 requires perl-base = 5.28.1, but this requirement cannot be provided Problem: perl-X2Go-Server-DB-4.1.0.4-0.0x2go1.0.git20191106.1811.heuler.x86_64 requires perl(:MODULE_COMPAT_5.28.1), but this requirement cannot be provided Problem: perl-X2Go-Server-4.1.0.4-0.0x2go1.0.git20191106.1811.heuler.x86_64 requires perl(:MODULE_COMPAT_5.28.1), but this requirement cannot be provided Problem: perl-X2Go-Log-4.1.0.4-0.0x2go1.0.git20191106.1811.heuler.x86_64 requires perl(:MODULE_COMPAT_5.28.1), but this requirement cannot be provided Problem: x2goserver-4.1.0.4-0.0x2go1.0.git20191106.1811.heuler.x86_64 requires perl(:MODULE_COMPAT_5.28.1), but this requirement cannot be provided Simply telling zypper to keep the obsolete packages doesn't work as this ends up in a rabbit-hole of seemingly irresolvable dependency issues.

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Bug#1520: Proxy-Server - SSH - strong Cipher crash x2Go-Client
by Marian.Schwarcz＠dlr.de 20 Sep '21

20 Sep '21

Package: x2goClient Version: 4.1.2.2-2020.02.13 Host-System: Windows 10, und Windows Server 2012 R2 (German Language) Installations-Typ: Recommended (Default) *** Problem Description *** When using x2GoClient via jumpserver (as SSH-Proxy-Server), then is X2GoClient automatic closed (without any Information). Problem are the SSH-Strong-Ciphers, which are configured in SSHd on Jumpserver. Strong Ciphers => x2GoClient crashed. If default Ciphers => x2GoClient and connection works. *** X2GoClient - Configuration *** Sitzungsname: test Pfad: / Host: ziel-server Login: test_ye SSH-Port: 22 Proxy-Server für SSH-Verbindung verwenden SSH Host: jumpserver Port: 22 Gleiche Anmeldung wie für X2Go-Server Gleiches Kennwort wie für X2Go-Server XFCE *** Jumpserver Configuration) *** Jumpserver SSHd Config: /etc/ssh/sshd_config (CentOS 7) Ciphers aes128-ctr,aes192-ctr,aes256-ctr The ciphers are used for strong Encryption. Then access from x2GoClient via jumpserver cannot handle this. ------ When the Cipher-Restriction is not configured: Jumpserver SSHd Confg: (CentOS 7) #Ciphers aes128-ctr,aes192-ctr,aes256-ctr then the connection from x2GoClient via jumpserver to Destination X2Go-Server does work. I hope I provided all needed information for you. Let me know if this can be patched, or does our Company need to search for other solution. Thank you. Best regards, Marián Schwarcz

4 5

Pull request: add --nofork option to x2gocleansessions
by Andrew J. Hesford 02 Aug '21

02 Aug '21

Greetings, Following is a pull request against the 4.1.0.x branch that separates the no-fork behavior of x2gocleansessions from the debug output behavior. A new flag, `--nofork` (`-n-` for short) determined whether the program forks; `--debug` only controls the logging verbosity and also forces `$nofork=1` to preserve old behavior. Please let me know if anything should be changed. Thanks, Andrew Hesford The following changes since commit cabad60865be64de219b3b477ddaefa6aef1cf43: Continue development (2018-11-29 08:09:45 +0100) are available in the Git repository at: https://github.com/ahesford/x2goserver.git nofork for you to fetch changes up to 4587d918c138205c252316c007fab31b75b87061: Separate non-forking behavior from --debug into --nofork (2021-05-11 19:27:02 -0400) ---------------------------------------------------------------- Andrew J. Hesford (1): Separate non-forking behavior from --debug into --nofork x2goserver/sbin/x2gocleansessions | 20 +++++++++++++------- 1 file changed, 13 insertions(+), 7 deletions(-) diff --git a/x2goserver/sbin/x2gocleansessions b/x2goserver/sbin/x2gocleansessions index e78f677a..8e2ba433 100755 --- a/x2goserver/sbin/x2gocleansessions +++ b/x2goserver/sbin/x2gocleansessions @@ -40,15 +40,17 @@ use Pod::Usage; Getopt::Long::Configure("gnu_getopt", "no_auto_abbrev"); my $debug = 0; +my $nofork = 0; my $help = 0; my $man = 0; -GetOptions('debug|d' => \$debug, 'help|?|h' => \$help, 'man' => \$man) or pod2usage(2); +GetOptions('debug|d' => \$debug, 'nofork|n' => \$nofork, 'help|?|h' => \$help, 'man' => \$man) or pod2usage(2); pod2usage(1) if $help; pod2usage(-verbose => 2, -exitval => 0) if $man; openlog($0,'cons,pid','user'); if ($debug) { + $nofork = 1; setlogmask( LOG_UPTO (LOG_DEBUG) ); } else @@ -99,12 +101,12 @@ my $uname; my $serv = hostname; my $pid; -if (! $debug) +if (! $nofork) { $pid = fork(); } -if ((!$debug) && (not defined $pid)) +if ((!$nofork) && (not defined $pid)) { print "resources not avilable.\n"; } @@ -128,7 +130,7 @@ elsif ($pid == 0 ) my $superenice_idle=$Config->param("superenicer.idle-nice-level"); my $superenice_ignoredusers=$Config->param("superenicer.ignored-users"); - if ( ! $debug ) + if ( ! $nofork ) { # close any open file descriptor left open by our parent before the fork my $fd; @@ -377,7 +379,8 @@ x2gocleansessions [options] Options: --help|-h|-? brief help message --man full documentation - --debug|-d enable debugging and don't daemonize + --debug|-d enable debugging; implies --nofork + --nofork|-n don't daemonize =head1 OPTIONS @@ -393,8 +396,11 @@ Prints the manual page and exits. =item B<--debug>|B<-d> -Override debugging setting in global config and keep application in foreground -instead of daemonizing. +Override debugging setting in global config; implies B<--nofork>. + +=item B<--nofork>|B<-n> + +Keep application in foreground instead of daemonizing. =back

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Bug#1555: [Bug] X2Go: The remote NX proxy closed the connection
by SALBAN, LOUIS ANDREA 02 Aug '21

02 Aug '21

Package: x2goserver Version: 4.1.0.3 When I run x2goclient 4.1.2.2, on my Windows 10 64-bit machine, the following error appears: * Error: The remote NX proxy closed the connection.* * Error: Failure negotiating the session in stage '7'. Error: Wrong version or invalid session authentication cookie* The x2goserver 4.1.0.3 and nxagent 3.5.99.26 is installed on a RHEL 8.2 64-bits workstation. On the RHEL 8.2 workstation, I tried to delete the x2go database and recreate it without effect: I also tried to run the x2goagent (see x2goagent.txt) thinking I got a clearer error, but the x2go windows opened correctly. I'm completely stuck and don't know what else to do. You will find attached a maximum of log, hoping that this helps you to see more clearly. Finally, I would like to point out that I can correctly connect to a second workstation under RHEL 7.2 64-bits with x2goserver 4.0.1.20 and x2goagent 3.5.0.32. Thank you. Regards *Louis-Andréa SALBAN* IM Focal point for IYYS Real-Time Framework - IYYSW *Airbus Operations SAS Toulouse* * louis-andrea.l.salban(a)airbus.com The information in this e-mail is confidential. The contents may not be disclosed or used by anyone other than the addressee. Access to this e-mail by anyone else is unauthorised. If you are not the intended recipient, please notify Airbus immediately and delete this e-mail. Airbus cannot accept any responsibility for the accuracy or completeness of this e-mail as it has been sent over public networks. If you have any concerns over the content of this message or its Accuracy or Integrity, please contact Airbus immediately. All outgoing e-mails from Airbus are checked using regularly updated virus scanning software but you should take whatever measures you deem to be appropriate to ensure that this message and any attachments are virus free.

2 2

Bug#1554: matlab colors inverted in X2go client
by Anna Spiers 02 Aug '21

02 Aug '21

Package: x2goclient Version: 4.1.2.2 (Qt-4.8.7) When using Matlab on an Ubuntu linux server accessed through x2goclient, the Matlab window has inverted colors (e.g., background is black, text is various colors with different highlighted colors). I'm using x2go from a 2017 Macbook Pro with MacOS Catalina. I've recently found the matlab window inverts its colors when the x2goclient window is off-screen to the left, but when it's completely contained by my monitor window or slightly off-screen to the right, then the colors are normal. A similar problem happens on my colleague's 2020 Macbook Pro with MacOS Big Sur, but no matter how he configures the x2goclient window, his matlab screen still has inverted colors.

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Bug#1553: x2goserver error: unknown operating system
by Henrik Schmidt 02 Aug '21

02 Aug '21

Package: x2goserver Version: 4.1.0.4 When starting a x2go session with the server running Opensuse Tumbleweed OS I expect to get a session. What I get is the error message:|"Unknown operating system, XSession startup not implemented!" I looked at the x2goserver source code and it checked for ||[ -f /etc/SUSE-brand ] || [ -f /etc/SuSE-release ] which both are absent. I did a 'touch ||/etc/SuSE-release|' on the server and x2go started working again. So there should be a better detection for Opensuse Tumbleweed. Client: Windows 10 X2GoClient 4.1.2.2 Session: xfce or kde, it doesn't matter Server: OpenSuse Tumbleweed x2goserver-4.1.0.4~git107+gc2182644-3.37.x86_64 x2goserver-xsession-4.1.0.4~git107+gc2182644-3.37.x86_64 nxagent-3.5.99.4~git2184+gd20cb44e8-1.6.x86_64 1. ||||

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x2go-dev July 2021