x2go-dev September 2020

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10 participants
86 discussions

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#913: Inaccurate scaling of dialog boxes and fonts for large DPI screen in Windows 10
by Alves-Foss, James (jimaf＠uidaho.edu) 02 Aug '21

02 Aug '21

Package: x2goclient for windows Version: 4.0.5.0 Downloaded new version of x2goclient for a new Dell Laptop. Screen resolution 3200x1800. OS Windows 10 (just checked, same problem on similar machine in Windows 8.1) When I open the main program, the fonts and windows do not scale well in the session selection boxes When I create a new session and try to open it, I can not see the list of open sessions to connect to. This appears to be a scaling issue for high DPI systems. I tried Windows 7, Windows 8 compatibility modes. I tries to disable display scaling on high DPI systems (see attached images)

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Bug#581: VirtualBox Clipboard Sharing does not work when accessing the host over X2Go
by Michael DePaulo 18 Jun '21

18 Jun '21

Package: nx-libs Version: 3.5.0.27 Severity: normal If you run a VirtualBox VM with its display running under X2Go, the VM's clipboard sharing fails to work in either direction. You cannot copy and paste text between the VM and an app running under X2Go server, nor can you copy and paste text between the VM and an app running on the X2Go Client system. (I believe VirtualBox VMs use SDL to interact with the X server, which in this case is nxagent. This differs from the VirtualBox GUI, which is written in QT.) Specifically, when the X sesssion starts on the guest, a VirtualBox-provided script for X calls "VBoxClient --clipboard" to start the clipboard service. The service runs as the user logged into the guest. However, this service fails to stay running, and thus the clipboard sharing does not work. If you launch the VirtualBox VM on the local X.org X server, the guest's clipboard service stays running and clipboard sharing works. You can also launch the VM in RDP headless mode from x2go (so the VM does not render its display to any nxagent). In this use case, the clipboard service stays running and clipboard sharing works. The strange part is that the configuration of the host affects the behavior of the guest. It makes sense though because it's a bug in the guest's code to integrate with the host. Also, when you do call "VBoxClient --clipboard", it returns 0. And if you call it after the X11 session has already started, the problem still occurs. In x2goclient, I tried turning on and off the following setting, but it had no effect: Options -> Settings -> X-Server settings -> do not use primary clipboard My theory is that this is a bug in nx-libs, and that the bug is probably related to nx-libs being forked from such an old X.org codebase. It is worth looking into whether other SDL apps have clipboard trouble with X2Go on Ubuntu 14.04. (It's also worth testing an older release of Ubuntu as the host OS, since it would have an older release of SDL.) Host system: OS: Ubuntu 14.04.1 64-bit with latest bugfix & security updates nxagent: 2:3.5.0.27-0~446~ubuntu14.04.1 x2goserver: 4.0.1.15-0~847~ubuntu14.04.1 x2goserver-xsession: 4.0.1.15-0~847~ubuntu14.04.1 VirtualBox 4.3.14 (from download.virtualbox.org) "Shared Clipboard" is set to "Bidirectional" for the VM $ cat /etc/x2go/x2goagent.options | grep -v '^#' | grep -v '^$' X2GO_NXAGENT_DEFAULT_OPTIONS="" X2GO_NXAGENT_DEFAULT_OPTIONS+=" -extension XFIXES" X2GO_NXAGENT_DEFAULT_OPTIONS+=" -nolisten tcp" Guest OS: Ubuntu 12.04.5 64-bit with precise HWE stack, the virtual kernel, and all the latest bugfix & security updates OS-provided XFCE virtualbox-guest-dkms: 4.1.12-dfsg-2ubuntu0.6 virtualbox-guest-utils: 4.1.12-dfsg-2ubuntu0.6 virtualbox-guest-x11: 4.1.12-dfsg-2ubuntu0.6 Configured according to: https://github.com/mikedep333/duckpan-vagrant/tree/duckduckhack-vm The aforementioned script is: /etc/X11/Xsession.d/98vboxadd-xclient (I'm sure a different script would be used for distros like CentOS which lack the /etc/X11/Xsession.d/ folder). Client system: Windows 8.1 64-bit with Update 1 and all the minor/monthly updates available X2GoClient 4.0.2.1+hotfix1+build3

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Bug#1369: Keys do not release when using Emacs in X2GO Client
by Yan Zhang 03 May '21

03 May '21

Package: x2goclient Version: 4.1.2.0 I am using Emacs 24.5.1 with x2go client version 4.1.2.0 in Windows 10. My server OS is Ubuntu 16.04 and the x2goserver comes from the PPA repo. The problem happens if I hit "ctrl+space" to start mark region in Emacs and then press down "ctrl+n" to scroll down the region for a few seconds. Usually after I release "ctrl+n", Emacs will leave the currently marked region for further commands. But in the reported version of client, Emacs keeps scrolling down until it reaches the end of the file. There is no way to stop it within Emacs (e.g., "ctrl+g"). I have tried to move the cursor by keeping "ctrl+n" pressed down. This issue does not happen after I release the key. This issue happens when the session type is either "XFCE" or "published application". I have not tested other session types as I do not have an environment for that. And client version 4.1.1.1 does not seem to have this issue. Thanks and regards, Yan

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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#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#1072: X2Go Client: top 24 pixels in fullscreen session do not respond to mouse clicks
by Chris Martin 09 Feb '21

09 Feb '21

Package: x2goclient Version: 4.0.5.1 I am trying to start a full screen X2Go session which 1. takes up the entire display, and 2. responds to my mouse clicks everywhere in the session, but cannot accomplish this with any combination of settings. Client OS: Debian Jessie / 8 / Stable, GNOME 3 desktop environment Client X2Go Client: 4.0.5.1 and 4.0.3.1 Server OS: Xubuntu 16.04 LTS Server x2goserver version: 4.0.1.19 Server x2goserver-xsession version: 4.0.1.19 When I choose "fullscreen", I get different behavior intermittently: 1. The client spawns across the entire screen but the *top panel inside the X2Go session* does not respond to any mouse clicks. I suspect the panel in my GNOME session running the X2Go client (which occupies the same pixels behind the panel inside the X2Go session) is stealing mouse focus. My mouse pointer turns black instead of white when I hover over the top 24 pixels or so, inside the X2Go session. 2. The client spawns what I would call a "maximized window". The top of the screen is still consumed by the title bar of the X2Go window, and the panel of the enclosing GNOME session in which the X2Go client is running. I have observed both cases 1 (most common) and 2 with X2Go Client 4.0.5.1, and only case 1 with X2Go client 4.0.3.1. When I choose "Display 1" in the Input/Output settings, the X2Go session displays only in the upper-left quadrant of my display; the rest of the screen is black. Thank you, Chris Martin

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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

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Bug#1496: PyMOL crashes x2goagent
by Craig Morton 07 Oct '20

07 Oct '20

Package: x2goagent Version: 3.5.99.24 Starting the PyMOL molecular modelling program (www.pymol.org) opens the PyMOL window then immediately crashes the x2go session. The session can't be restarted. Dumped core on crash is from x2goagent and has the following information: Using host libthread_db library "/lib64/libthread_db.so.1". Core was generated by `x2goagent -nolisten tcp -nolisten tcp -dpi 96 -D -auth /home/craig/.'. Program terminated with signal 11, Segmentation fault. #0 0x000055fb9673da3d in _mesa_update_framebuffer_visual () PyMOL runs just fine sitting at the computer, the crash only occurs with x2go. Tried under KDE and MATE in case it was a KDE issue, same result, same error. Running on Centos7, kernel 3.10.0-1127.18.2.el7.x86_64 Craig.

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Gazebo 11 on Fedora 32 high CPU utilization via X2Go
by Robert Kudyba 26 Sep '20

26 Sep '20

Not sure if this is the best place to report this. Is this a X2Go issue, or a Gazebo issue with the Fedora package, or just a straight up Gazebo issue? Gazebo, gzclient, pins the CPU. We don't see this when using ssh -X, e.g., from a Mac with XQuartz, nor Windows with MobaXterm. 5.7.15-200.fc32.x86_64, gazebo-11.1.0-2.fc32.x86_64 top - 09:31:06 up 33 days, 17:28, 4 users, load average: 2.15, 0.74, 0.44 Tasks: 806 total, 3 running, 803 sleeping, 0 stopped, 0 zombie %Cpu(s): 17.6 us, 0.4 sy, 0.0 ni, 81.7 id, 0.0 wa, 0.1 hi, 0.1 si, 0.0 st MiB Mem : 128537.7 total, 58096.7 free, 11477.8 used, 58963.1 buff/cache MiB Swap: 15260.0 total, 15178.2 free, 81.8 used. 115554.7 avail Mem PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 523200 me 20 0 14.0g 343892 146472 R 826.2 0.3 2:40.46 gzclient 523199 me 20 0 12.0g 200884 117124 S 7.6 0.2 0:03.21 gzserver 521547 me 20 0 202364 94772 25548 S 4.3 0.1 0:03.45 x2goagent We see this in /var/log/messages: Sep 22 09:30:11 us dbus-broker-launch[522115]: Activation request for 'org.a11y.atspi.Registry' failed. And from launching with verbose option: [Wrn] [GuiIface.cc:119] X server does not support XInput 2 [Wrn] [GuiIface.cc:119] QXcbConnection: XCB error: 1 (BadRequest), sequence: 168, resource id: 158, major code: 130 (Unknown), minor code: 47

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x2go-dev September 2020