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Bug#1539: Add package x2godialog
by Ulrich Sibiller 02 Apr '21

02 Apr '21

Package: x2goserver Version: 4.1.0.3 Add a new package x2godialog (basically a link to nxdialog) See attached patch.

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X2go client window misplaced in LXQt
by Kalle Tuulos 02 Apr '21

02 Apr '21

I'm running Lubuntu 20.04, which has LXQt. The X2go client has been installed using apt method, current version is 4.1.2.2. When the X2Go client is opened and closed, on the next time, it will open on 30 pixels higher and 2 pixels left position, than the earlier position. This can be seen from file ~/.x2goclient/sizes: Before opened: [mainwindow] maximized=false pos=@Point(275 170) size=@Size(1017 600) Window is not moved, just closed: [mainwindow] maximized=false pos=@Point(273 140) size=@Size(1017 600) Opened and closed again, not moved: [mainwindow] maximized=false pos=@Point(271 110) size=@Size(1017 600) This same problem is in many Qt based applications, so this is not X2go problem as such, but on the Qt framework. Also, this same problem was already on 18.04 version of Ubuntu, on another computers. I have a workaround for this - the sizes files is overwritten on each login with a valid one. Is there any more clever fix for this? BR, Kalle -- - Kalle

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GitLab Install LXC - Update (issue)
by Melroy van den Berg 01 Apr '21

01 Apr '21

Hi all, I tried to omnibus GitLab install on the VM. Failed on: Expected process to exit with [0], but received '255' ---- Begin output of sysctl -e -p /opt/gitlab/embedded/etc/90-omnibus-gitlab-kernel.shmmax.conf ---- STDOUT: STDERR: sysctl: setting key "kernel.shmmax": Read-only file system ---- End output of sysctl -e -p /opt/gitlab/embedded/etc/90-omnibus-gitlab-kernel.shmmax.conf ---- Ran sysctl -e -p /opt/gitlab/embedded/etc/90-omnibus-gitlab-kernel.shmmax.conf returned 255 Due to: command "sysctl -e -p /opt/gitlab/embedded/etc/90-omnibus-gitlab-kernel.shmmax.conf" causing the error: sysctl: setting key "kernel.shmmax": Read-only file system Read-only of the /sys/ directory is typical the case with LCX containers... But the advice value of the shmax is: cat /opt/gitlab/embedded/etc/90-omnibus-gitlab-kernel.shmmax.conf kernel.shmmax = 17179869184 I can complete the setup if you want, by using a workaround by commenting-out the related section in: /opt/gitlab/embedded/cookbooks/cache/cookbooks/package/resources/gitlab_sysctl.rb. And run: gitlab-ctl reconfigure. But I rather like to get this working in a correct manner. Maybe somebody add at this shmmax statement above to the host /etc/sysctl.conf file? Let me know if somebody can help me with this or which direction you want to go. Ps. where are not the only one on the internet: http://letmegooglethat.com/?q=STDERR%3A+sysctl%3A+setting+key+%22kernel.shm… Thx! Kind regards, Melroy van den Berg

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Bug#1533: Mac client: connection timeout 30 seconds after session start
by Ricky Charlet 01 Apr '21

01 Apr '21

Package: unknown Version: 4.1.2.2 Howdy, When I connect from Mac client to ubuntu server, I get a “connection timeout” 30 seconds after “connection start.” Other people can connect to my server. Error message is: Loop: WARNING! Overriding auxiliary X11 port with new value '1'. Warning: Overriding auxiliary X11 port with new value '1'. Info: Connecting to remote host 'localhost:36652'. Info: Connected to remote proxy on FD#11. Info: Connection with remote proxy completed. Loop: WARNING! Unrecognized session type 'unix-kde-depth_32'. Assuming agent session. Warning: Unrecognized session type 'unix-kde-depth_32'. Assuming agent session. Info: Using ADSL link parameters 1408/24/1/0. Info: Using cache parameters 4/4096KB/8192KB/8192KB. Info: Using pack method '16m-jpeg-9' with session 'unix-kde-depth_32'. Info: Using ZLIB data compression 1/1/32. Info: Using ZLIB stream compression 4/4. Info: No suitable cache file found. Info: Forwarding X11 connections to display '/private/tmp/com.apple.launchd.E12k8P0IX6/org.xquartz:0'. Info: Forwarding auxiliary X11 connections to display '/private/tmp/com.apple.launchd.E12k8P0IX6/org.xquartz:0'. Session: Session started at 'Fri Mar 19 09:38:16 2021'. Connection timeout, abortingSession: Terminating session at 'Fri Mar 19 09:38:46 2021'. Info: Waiting the cleanup timeout to complete. Session: Session terminated at 'Fri Mar 19 09:38:47 2021'. On the server, in /var/log/messages, I get what appears to be a success report: Mar 19 09:38:16 hpnsw4371 /usr/bin/x2gostartagent: successfully started X2Go Agent session with ID charletr-50-1616171893_stDMATE_dp32 I have a tcpdump (is in an ssh tunnel, to a little vague) which shows client sending dup packet not quite, but almost 30 seconds into session attempt. 116 33.763841 15.116.49.166 16.99.147.244 SSHv2 108 Server: [TCP Spurious Retransmission] , Encrypted packet (len=64) 117 33.763941 16.99.147.244 15.116.49.166 TCP 56 [TCP Dup ACK 114#1] 64138 → 22 [ACK] Seq=3239 Ack=5027 Win=262144 Len=0 SLE=4963 SRE=5027 Client = MacOS 10.15.7 (Catalina…and due to corp policy, I cannot upgrade); x2go 4.1.2.2 with qt 4.8.7 with xquartz 2.7.11 with xorg 1.18.4 Server : x2goversion : 1.0.2.4 : 0.0.1.6 : 4.1.0.3 : 4.1.0.3 : 4.1.0.3 : 4.1.0.3 : 4.1.0.3 : 3.5.99.22 : 4.1.0.3

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x2goagent segfaults with x2goclient from ubuntu 20.10
by Kenneth Johansson 01 Apr '21

01 Apr '21

so I have been using x2go for years and its works fine for what I need but today it stopped working. the error message was not really clear so I deleted and reinstalled (server and client) but still no go. Turns out its the x2goagent that segfaults on the server side. The client is an ubuntu 20.10 and the servers I tested with is debian 10 and ubuntu 20.04. To make sure that there was no version mismatch I then installed the server on the ubuntu 20.10 computer and tried to connect to localhost and still get the segfault. how to debug this ?? what I try to do is use a single application and start "command=/usr/bin/xterm" since its not working even to localhost this should be something that a lot more people have a problem with than just me. I have deleted all configurations for both server and client and the only thing I change when I create a new session is the host login session type. So I do not see how I could have made something wrong here.

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Bug#1535: users randomly (but repeatedly) get a "libx2go-server-db-sqlite3-wrapper insertsession" error at connection attempts
by Enrico Bertocchi 27 Mar '21

27 Mar '21

Package: x2goserver Version: Devuan Beowulf package x2goserver/stable,now 4.1.0.3-4 Dear sirs, I'm currently employing x2go (Devuan Beowulf package x2goserver/stable,now 4.1.0.3-4) to operate a terminal server for computer lab lessons. It randomly happens that some of the students experience sequences of failed connection attempts (usually 5-10 in a row) with the following kind of error (typed from a typical screenshot) [...] n283287-55-1616084795_stDmwm_dp32 at /usr/share/perl5/X2Go/Server/DB.pm line 251. : /usr/lib/x2go/libx2go-server-db-sqlite3-wrapper insertsession 55 x2go-cdm [...] n283287-55-1616084798_stDmwm_dp32 at /usr/share/perl5/X2Go/Server/DB.pm line 251. : /usr/lib/x2go/libx2go-server-db-sqlite3-wrapper insertsession 55 x2go-cdm n283287-55-1616084799_stDmwm_dp32 at /usr/share/perl5/X2Go/Server/DB.pm line 251. Unable to find free display port or insert new sessions into database; parameters: port(55), hostname (x2go-cdm) and session name (n283287-55-1616084799_stDmwm_dp32). A further, subsequent connection attempt randomly succeeds instead. At the same time, other students experience regular login procedures. The student passwd data is taken from a "sssd-ldap" domain, fact this that might cause some of the quirks. Please indicate me which further data on the server side might be relevant for investigating the problem. Thanks. -- Enrico Bertocchi

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Bug#1386: Popup plasmoids flicker and disappear when a remote application is in focus
by Tristan Miller 23 Mar '21

23 Mar '21

Package: x2goclient Version: 4.1.1.1 I use X2Go to run single applications remotely and have them appear on my local Plasma desktop. When such a remote application window has focus, it prevents me from opening most pop-up plasmoids on my local machine. The plasmoids flicker and then disappear. STEPS TO REPRODUCE 1. Use X2Go to launch a single application remotely. 2. Give the remote application focus (for example, by Alt-Tabbing to it or clicking on it). 3. Do some action that causes a local plasmoid window to pop up. For example, click on the Application Launcher to try to show the application list, or click on the Digital Clock to try to show the calendar, or click on a group entry in the Task Manager to try to show the list of windows, or press Alt+F2 to try to bring up KRunner. OBSERVED RESULT 4. The popup window appears for a few milliseconds and then disappears. EXPECTED RESULT 4. The popup window should appear and then persist. SOFTWARE/OS VERSIONS KDE Plasma Version: 5.12.8 KDE Frameworks Version: 5.45.0 Qt Version: 5.9.4 OS: openSUSE Leap 15.0 x2goclient: 4.1.1.1 x2goserver: 4.1.0.4 ADDITIONAL INFORMATION The video at <https://bugs.kde.org/attachment.cgi?id=119625> shows the bug. It shows a portion of my Plasma panel that includes the Application Launcher, the Pager, and part of the Task Manager. Claws Mail is running remotely via X2Go and one of its composer windows has focus. I am clicking repeatedly on the Application Launcher. You can see the pop-up window briefly flickering and disappearing. As far as I can tell, the problem happens only when an application run via X2Go has focus. The problem is not reproducible with applications run remotely via plain SSH. Not sure if this is a KDE/Plasma problem or an X2Go problem, so I have reported this also on the KDE Bugzilla: <https://bugs.kde.org/show_bug.cgi?id=406882>

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Bug#1534: session.log fills up root filesystem
by Nico van Vliet 22 Mar '21

22 Mar '21

package: x2goserver version: 4.1.0.3 Cannot write data to system activity file: No space left on device Just use X2Go client on Windows10 (and possibly others) and suspend and reconnect a lot to the server. X2Go keeps writing to the session.log file. Example: # ls -l /tmp/.x2go-deshmane/C-deshmane-79-1615026580_stDXFCE_dp32/session.log -rw------- 1 deshmane dkdvlp 2037804631 Mar 22 12:25 /tmp/.x2go-deshmane/C-deshmane-79-1615026580_stDXFCE_dp32/session.log tail /tmp/.x2go-deshmane/C-deshmane-79-1615026580_stDXFCE_dp32/session.log nxagentPendingEvents: Returning error with display down. nxagentPendingEvents: Returning error with display down. nxagentPendingEvents: Returning error with display down. nxagentPendingEvents: Returning error with display down. nxagentPendingEvents: Returning error with display down. nxagentPendingEvents: Returning error with display down. nxagentPendingEvents: Returning error with display down. nxagentPendingEvents: Returning error with display down. nxagentPendingEvents: Returning error with display down. nxagentPendingEvents: Returning error with display down. These messages keep filling up the root filesystem without limit. Server: # cat /etc/os-release NAME="CentOS Linux" VERSION="7 (Core)" ID="centos" ID_LIKE="rhel fedora" VERSION_ID="7" PRETTY_NAME="CentOS Linux 7 (Core)" ANSI_COLOR="0;31" CPE_NAME="cpe:/o:centos:centos:7" HOME_URL="https://www.centos.org/" BUG_REPORT_URL="https://bugs.centos.org/" CENTOS_MANTISBT_PROJECT="CentOS-7" CENTOS_MANTISBT_PROJECT_VERSION="7" REDHAT_SUPPORT_PRODUCT="centos" REDHAT_SUPPORT_PRODUCT_VERSION="7" Please remove this message and/or limit size of session.log Best Regards, Nico van Vliet -- ___________________________________________________________ Nico van Vliet Faculty of Engineering Technology University of Twente Postbus 217 7500 AE Enschede Netherlands email: n.vanvliet(a)utwente.nl Tel: +31 53 489 2483 ___________________________________________________________

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Bug#1532: x2goclient + DirectRDP (FreeRDP 2.x): Passwords need to escape quotation marks in the password
by Mike Gabriel 19 Mar '21

19 Mar '21

Package: x2goclient Severity: normal Version: 4.1.2.2-2 If user passwords contains a single " character, xfreerdp calls fail because the " character is not escaped / quoted properly and interpreted as part of the command line. 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

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Bug#1530: TLS intermediate certificate seems to be "wrong"
by Tim Landscheidt 08 Mar '21

08 Mar '21

Package: wiki.x2go.org While checking URLs with LWP/curl, I noticed that wiki.x2go.org fails: | [tim@passepartout ~]$ curl https://wiki.x2go.org/ | curl: (60) SSL certificate problem: unable to get local issuer certificate | More details here: https://curl.haxx.se/docs/sslcerts.html | curl failed to verify the legitimacy of the server and therefore could not | establish a secure connection to it. To learn more about this situation and | how to fix it, please visit the web page mentioned above. | [tim@passepartout ~]$ Staring at "openssl s_client -connect wiki.x2go.org:443", https://www.ssllabs.com/ssltest/analyze.html?d=wiki.x2go.org and https://letsencrypt.org/certificates/ suggests to a layman that the server certificate is signed by the R3 certificate, but the X3 certificate is sent along?

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