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Upcoming Debian 11 freeze
by Mike Gabriel 27 Jan '21

27 Jan '21

Hi Mihai, Stefan, Alex, Uli, etc. the Debian 11 freeze is ahead (last uploads of new upstream releases are possible on Feb 6th/7th). I'd like to see some of the X2Go components released before that date (esp. the x2gothinclient, x2goclient, x2goserver and also nx-libs (already discussed with Uli)). @Mihai: is that a feasible thing to do??? Greets, Mike -- DAS-NETZWERKTEAM c\o Technik- und Ökologiezentrum Eckernförde Mike Gabriel, Marienthaler Str. 17, 24340 Eckernförde mobile: +49 (1520) 1976 148 landline: +49 (4351) 850 8940 GnuPG Fingerprint: 9BFB AEE8 6C0A A5FF BF22 0782 9AF4 6B30 2577 1B31 mail: mike.gabriel(a)das-netzwerkteam.de, http://das-netzwerkteam.de

2 2

upgrade to Fedora 33 breaks X2Go again, no free display number available, cannot start new session
by Robert Kudyba 26 Jan '21

26 Jan '21

I posted a similar issue back in Nov, 2020 at https://www.mail-archive.com/x2go-dev@lists.x2go.org/msg06284.html rpm -qa|grep -i x2go x2goclient-4.1.2.2-3.fc33.x86_64 x2goserver-common-4.1.0.3-9.fc33.noarch perl-X2Go-Server-4.1.0.3-9.fc33.noarch perl-X2Go-Log-4.1.0.3-9.fc33.noarch perl-X2Go-Server-DB-4.1.0.3-9.fc33.x86_64 x2goagent-4.1.0.3-9.fc33.x86_64 x2goserver-xsession-4.1.0.3-9.fc33.noarch x2goserver-4.1.0.3-9.fc33.x86_64 nxagent -display :55 NXAGENT - Version 3.5.99.25 Jan 25 14:14:29 pascal /usr/bin/x2gostartagent[39654]: no free display number available, cannot start new session. Retrying (run 1). Jan 25 14:14:30 pascal /usr/bin/x2gostartagent[39663]: no free display number available, cannot start new session. Retrying (run 2). Jan 25 14:14:30 pascal /usr/bin/x2gostartagent[39672]: no free display number available, cannot start new session. Retrying (run 3). Jan 25 14:14:30 pascal /usr/bin/x2gostartagent[39681]: no free display number available, cannot start new session. Retrying (run 4). Jan 25 14:14:30 pascal /usr/bin/x2gostartagent[39690]: no free display number available, cannot start new session. Retrying (run 5). Jan 25 14:14:30 pascal /usr/bin/x2gostartagent[39699]: no free display number available, cannot start new session. Retrying (run 6). Jan 25 14:14:30 pascal /usr/bin/x2gostartagent[39708]: no free display number available, cannot start new session. Retrying (run 7). Jan 25 14:14:30 pascal /usr/bin/x2gostartagent[39717]: no free display number available, cannot start new session. Retrying (run 8). Jan 25 14:14:31 pascal /usr/bin/x2gostartagent[39726]: no free display number available, cannot start new session. Retrying (run 9). Jan 25 14:14:31 pascal /usr/bin/x2gostartagent[39736]: no free display number available, cannot start new session. Retrying (run 10). Jan 25 14:14:31 pascal /usr/bin/x2gostartagent[39737]: Unable to find free display port or insert new session into database; parameters: port (50), hostname (pascal.dsm.fordham.edu) and session name (). Jan 25 14:14:31 pascal kernel: kauditd_printk_skb: 21 callbacks suppressed Let me to https://unix.stackexchange.com/questions/467507/x2go-unable-to-find-free-di… so I ran x2godbadmin --createdb Then I tried with another use and got: Connection failed. /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") Unable to find free display port or insert new session into database; parameters: port (50), hostname (oudomain.edu) and session name (). How does one start X2Go Windows with debug enabled? I only found for Mac you can add the --debug flag. My colleague also had this error: XSession-x2go: X session started for moniot at Mon Jan 25 09:01:13 EST 2021 ** Message: 09:01:15.605: couldn't access control socket: /run/user/1200/keyring/control: No such file or directory SSH_AUTH_SOCK=/run/user/1200/keyring/ssh ** (mate-settings-daemon:1436112): WARNING **: 09:01:16.172: Could not open RFKILL control device, please verify your installation SSH_AUTH_SOCK=/run/user/1200/keyring/ssh SSH_AUTH_SOCK=/run/user/1200/keyring/ssh vmware-user: could not open /proc/fs/vmblock/dev Error: /usr/bin/vmtoolsd must be run inside a virtual machine on a VMware hypervisor product. SSH_AUTH_SOCK=/run/user/1200/keyring/ssh (caja:1436133): Gtk-WARNING **: 09:01:17.552: Failed to register client: GDBus.Error:org.gnome.SessionManager.AlreadyRegistered: Unable to register client *** ERROR *** TI:09:01:17 TH:0x56299587f960 FI:gpm-manager.c FN:gpm_manager_systemd_inhibit,1786 - Error in dbus - GDBus.Error:org.freedesktop.DBus.Error.AccessDenied: Permission denied Traceback: mate-power-manager(+0x1d474) [0x562995487474] mate-power-manager(+0x136ab) [0x56299547d6ab] /lib64/libgobject-2.0.so.0(g_type_create_instance+0x248) [0x7f04c0b72498] /lib64/libgobject-2.0.so.0(+0x19205) [0x7f04c0b58205] /lib64/libgobject-2.0.so.0(g_object_new_with_properties+0x1dd) [0x7f04c0b596ad] /lib64/libgobject-2.0.so.0(g_object_new+0xc1) [0x7f04c0b5a331] mate-power-manager(+0x15f16) [0x56299547ff16] mate-power-manager(+0xb20a) [0x56299547520a] /lib64/libc.so.6(__libc_start_main+0xf2) [0x7f04c0708082] mate-power-manager(+0xb58e) [0x56299547558e] Failure: Module initialization failed SELinux Troubleshooter: Applet requires SELinux be enabled to run Initializing caja-open-terminal extension Initializing caja-xattr-tags extension Initializing caja-image-converter extension ICE default IO error handler doing an exit(), pid = 1436318, errno = 32 (mate-settings-daemon:1436112): GLib-GIO-WARNING **: 09:02:44.229: Error releasing name org.mate.SettingsDaemon.Rfkill: The connection is closed [1611583276,000,xklavier.c:xkl_engine_start_listen/] The backend does not require manual layout management - but it is provided by the application

2 4

Problem with TMOUT variable
by Max V 25 Jan '21

25 Jan '21

Hello, I put the TMOUT variable in /etc/profile and set it read only. Now I got this error: Connection failed. /etc/profile: row 5: TMOUT: command not found /etc/profile.d/timeout.sh: row 4: TMOUT: read only variable and the connection doesn't start. Best regards Max

3 3

Bug#1519: x2go is aborted: unable to open display
by simona bellavista 11 Jan '21

11 Jan '21

Package: X2Go Client Version: 4.1.2.2 I work on OSX client. I try to connect to a remote server, and the connection fails. I was able to connect until 3 days ago, I did not change anything that I can remember. I get the following error message: Error: Aborting session with 'Unable to open display 'nx/nx,options=/tmp/.x2go-user/C-user-173-1610379165_stDXFCE_dp32/options:173''. Session: Aborting session at 'Mon Jan 11 16:33:18 2021'. Session: Session aborted at 'Mon Jan 11 16:33:18 2021'. Loop: WARNING! Signals were not blocked in process with pid '30901'. Warning: Signals were not blocked in process with pid '30901'.

1 0

Bug#1495: x2goclient resumes existing session with wrong X-Server options
by Maarten Boekhold 09 Dec '20

09 Dec '20

Package: x2goclient Version: 4.1.2.2 Windows 10, x2goclient 4.1.2.2 When resuming a "paused" x2Go session, x2goclient is using the wrong X-Server settings. I have configured my x2goclient with the following settings for X.Org Server settings: **X.Org Server settings** [X] use custom X-Server Executable: C:/Program Files (x86)/x2goclient/VcXsrv/vcxsrv.exe [ ] start X-Server on X2Go Client start Window mode: -screen 0 %wx%h -notrayicon -clipboard -keyhook \ -nowinkill -nopn -silent-dup-error Fullscreen mode: -fullscreen -notrayicon -clipboard -keyhook \ -nowinkill -nopn -silent-dup-error Single application: -multiwindow -notrayicon -clipboard \ -keyhook -nowinkill -nopn -silent-dup-error Whole display: -nodecoration -notrayicon -clipboard -keyhook \ -nopn -silent-dup-error -screen 0 @ My x2goclient session is configured as: **Session preferences: Input/Output** [ ] Fullscreen [ ] Custom Width (greyed out 3696) Height (greyed out 2160) [X] Use whole display [ ] Maximum available Display: 2 When I start a new x2Go session, it correctly runs the X-Server with the "Whole display" command (as per Windows Task Manager): "C:\Program Files (x86)\x2goclient\VcXsrv\vcxsrv.exe" \ -nodecoration -notrayicon -clipboard -keyhook -nowinkill \ -nopn -silent-dup-error screen 0 @2 :0 But if I then "pause" this session and reconnect, x2goclient uses the "Window mode" command line options instead: "C:\Program Files (x86)\x2goclient\VcXsrv\vcxsrv.exe" \ -screen 3696x2160 -notrayicon -clipboard -keyhook \ -nowinkill -nopn -silent-dup-error :0 I suspect this has something to do with the code around line 4442 in onmainwindow.cpp, but I've not been able to figure out the exact details yet. Maarten

4 6

Bug#1510: nx defaults for packing are always overridden
by Ulrich Sibiller 01 Dec '20

01 Dec '20

Package: x2goclient Version: 4.1.2.2 NX has built-in defaults for the image compression parameter which are based on the selected connection speed. x2goclient does not honor these defaults but always sets the compression method explicitly. This means users who want to improve their performance by lowering the link speed setting (e.g. from wan to adsl) will not get the image compression nx thinks is best for the link speed but the one that is pre-defined by x2goclient, which is always 16m-jpeg-9. So they will not benefit from the best performance. See https://github.com/ArcticaProject/nx-libs/issues/802 for a description of the defaults: ----------------------------------------------- There are some high level compression modes, too, that will map to one from the list above: - "lossy" will map to "16m-jpeg" - "lossless" will map to "16m-rle-9" for link=lan and "16m-bitmap" for all other link types. - "adaptive" will choose lossy or lossless, depending on the characteristics of the image If no pack method is provided it will be set automatically from the link parameter: - modem: adaptive-3 - isdn: adaptive-5 - adsl: adaptive-7 - wan: adaptive-9 - lan: adaptive-9 -----------------------------------------------

1 0

Bug#1509: Unsupported pack methods
by Ulrich Sibiller 01 Dec '20

01 Dec '20

Package: x2goclient Version: 4.1.2.2 In the session configuration users can choose compressions methods with "rdp" and "rfb" in the name. Both compression methods are not supported by nx-libs since version 3.0.x and will lead to no image packing being used at all. From the session log: ... Loop: PANIC! Can't identify pack method for string '16m-rdp-compressed'. Error: Can't identify pack method for string '16m-rdp-compressed' ... Info: Using pack method 'none' with session 'unix-kde-depth_32'. ... This is absolutely counter-intuitive. Users selecting a compression method on purpose surely do not want to end up with no image compression at all. So they should be dropped completely.

1 0

Bug#1508: non Latin 1 passwords are rejected
by Sylvain Cuaz 27 Nov '20

27 Nov '20

Package: x2goclient Version: 4.1.2.2 Passwords with accents are rejected by x2goclient while working fine directly with ssh. Client OS Ubuntu 20.04.1 LTS with libssh 0.9.3-2ubuntu2.1 Server OS Ubuntu 16.04.6 LTS According to the documentation of ssh_userauth_password(), passwords should be passed as UTF-8. But sshmasterconnection.cpp passes auth_password.toLatin1(). I think just changing to auth_password.toUtf8() should suffice. Same thing goes for ssh_userauth_kbdint_setanswer() and maybe other calls. https://api.libssh.org/stable/group__libssh__auth.html#ga50c0c150f8c4703e7e… https://api.libssh.org/stable/group__libssh__auth.html#ga75e44b1f27059a0008…

1 0

X2Go 4.1.0.3-9 on Fedora 32 crash on login, x2gocheckport: line 131: syntax error in expression
by Robert Kudyba 16 Nov '20

16 Nov '20

X2Go was automatically updated a few days ago and stopped allowing users to login on one of our hosts. x2goserver-4.1.0.3-9.fc32.x86_64 5.8.18-200.fc32.x86_64 >From the alert box after trying to log in: Connection failed. /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") Unable to find free display port or insert new session into database; parameters: port (50), hostname (myhost.edu) and session name (). from /var/log/messages: Nov 16 09:31:20 ourdomain kernel: audit: type=1105 audit(1605537080.463:18641): pid=1392265 uid=0 auid=1000 ses=401 msg='op=PAM:session_open grantors=pam_selinux,pam_loginuid,pam_selinux,pam_namespace, pam_keyinit,pam_keyinit,pam_limits,pam_systemd,pam_unix,pam_umask,pam_lastlog acct="localguy" exe="/usr/sbin/sshd" hostname=xx.xx.xx.xx addr=xx.xx.xx.xx terminal=ssh res=success' Nov 16 09:31:20 ourdomain kernel: audit: type=2404 audit(1605537080.463:18642): pid=1392275 uid=0 auid=1000 ses=401 msg='op=destroy kind=server fp=SHA256:82:cc:b1:c1:18:02:11:25:68:a7:eb:ec:2a:ed:20:5e :81:1e:66:13:59:f4:7e:ea:ea:06:90:49:81:e8:33:f4 direction=? spid=1392275 suid=0 exe="/usr/sbin/sshd" hostname=? addr=? terminal=? res=success' Nov 16 09:31:23 ourdomain /usr/bin/x2gostartagent[1392479]: no free display number available, cannot start new session. Retrying (run 1). Nov 16 09:31:23 ourdomain /usr/bin/x2gostartagent[1392488]: no free display number available, cannot start new session. Retrying (run 2). Nov 16 09:31:23 ourdomain /usr/bin/x2gostartagent[1392497]: no free display number available, cannot start new session. Retrying (run 3). Nov 16 09:31:23 ourdomain /usr/bin/x2gostartagent[1392506]: no free display number available, cannot start new session. Retrying (run 4). Nov 16 09:31:23 ourdomain /usr/bin/x2gostartagent[1392515]: no free display number available, cannot start new session. Retrying (run 5). Nov 16 09:31:23 ourdomain /usr/bin/x2gostartagent[1392524]: no free display number available, cannot start new session. Retrying (run 6). Nov 16 09:31:24 ourdomain /usr/bin/x2gostartagent[1392533]: no free display number available, cannot start new session. Retrying (run 7). Nov 16 09:31:24 ourdomain /usr/bin/x2gostartagent[1392546]: no free display number available, cannot start new session. Retrying (run 8). Nov 16 09:31:24 ourdomain /usr/bin/x2gostartagent[1392555]: no free display number available, cannot start new session. Retrying (run 9). Nov 16 09:31:24 ourdomain /usr/bin/x2gostartagent[1392564]: no free display number available, cannot start new session. Retrying (run 10). Nov 16 09:31:24 ourdomain /usr/bin/x2gostartagent[1392565]: Unable to find free display port or insert new session into database; parameters: port (50), hostname (ourdomain.edu) and session name (). Running x2godbadmin --createdb made no difference. I've seen this mentioned on the list previously in 2018 but no response: https://lists.x2go.org/pipermail/x2go-user/2018-July/005172.html and a CentOS user who did not find a solution at https://centosfaq.org/centos/problems-with-x2go/

1 0

Bug#1505: Fix sftp-server path for opensuse tumbleweed
by balasr 15 Nov '20

15 Nov '20

Package: x2goclient Version: 4.1.2.2 Tag: patch Recently Opensuse Tumbleweed moved the location of where they put the sftp-server binary. See this bug report on the opensuse bugtracker: https://bugzilla.opensuse.org/show_bug.cgi?id=1175964 This patch adds this path to the search path

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