x2go-user

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2322 discussions

x2goagent memory usage (leak?)
by Stefan Seidel 09 Feb '16

09 Feb '16

Hi, I have used x2go for a while now and I observed that on the server, the process x2goagent is increasingly using more memory over time. I starts out with something like 300 MB, and rises steadily. I leave the session disconnected (suspended) when I leave work (usually I just shut down the client PC). The next day, memory usage is much higher, roughly 1GB. And this continues until the process uses too much memory and gets killed (or other processes get killed first). The server: - Ubuntu 12.04, CPU i7-860, RAM 24GB, 32 bit kernel (with PAE) ~> x2goversion x2goagent: 3.5.0.32 x2goserver: 4.0.1.19 x2goserver-extensions: 4.0.1.19 x2goserver-xsession: 4.0.1.19 Anyone observing a similar behaviour? Is it important whether I do x2gosuspend-session or just kill the client? Stefan

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Nightly Build Badly Broke
by Robert Dinse 05 Feb '16

05 Feb '16

I just upgraded to nightly build and it is horribly broken on Ubuntu Wily. When I try to connect to a remote site I get: Connection failed. mesg: ttyname failed: Inappropriate ioctl for device I can no longer connect to anything. -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- 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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X2Go speed (Gb LAN) vs. pure X
by Stefan Seidel 02 Feb '16

02 Feb '16

Hi, I am currently testing X2Go to be a replacement for our (1GBit/s) LAN XDMCP setup. I have set up a Jessie X2Go-PXE server VM with a Jessie chroot env. It is working in principle, I can get a connection and the advantage of session suspend/resume is great. (Although I had to remove the pulseaudio startup from the x2gosessiond to make it work.) However, I have two problems: 1. How can I set client-specific X11 options? We have clients with complex multi-monitor setups. Xinerama doesn't seem to be working, either, once I have set the screens on the client (using Ctrl+Alt+F1, then xrandr) and connect, the X session only sees one "big" screen. 2. Speed: for small screen updates (menu items etc.) - I would guess < 10k pixels - X2Go is very speedy and responsive. For anything larger (Google Chrome being a serious offender, as it always updates the whole rendering area) it is much slower. Even just scrolling in Firefox is "laggy". Pure X is much faster for these large screen updates. I have tried various settings, 4k-jpeg is almost acceptable speed-wise but still not fast enough. Test setup: X2Go-Server: Core i7-860 (4x2.8GHz), 24G RAM X2Go-PXE: VM with 4GHz AMD, 2G RAM Clients: Pentium D 2.8GHz, 512MB RAM, nVidia Dual-DVI graphics (model 6200 IIRC) with 2 1600x1200 monitors -> 2400x1600 total screen area. Clients use NOUVEAU and report Chipset: "NVIDIA NV44" Thanks in advance for any hints, Stefan

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4.0.5.1-0~1145~ubuntu15.10.1 Broken
by Robert Dinse 01 Feb '16

01 Feb '16

4.0.5.1-0~1145~ubuntu15.10.1 will not connect giving the previously mentioned ioctl inappropriate for device message, but 4.0.5.0 does work, unfortunately 4.0.5.0 does not have the "adaptive" option. 16m-jpeg 9 works for everything except 1024 full screen video and then only an occasional stutter so not urgent but would be nice to have the latest and greatest function. -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- 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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Re: [X2Go-User] kex error
by Mihai Moldovan 30 Jan '16

30 Jan '16

On 29.01.2016 06:07 PM, KARL A. WOELFER wrote: > Thanks Mihai - > > Great point - I will check the ssh server. > Here is the sshd_config on the server (I commented out the KexAlgorithms section, to re-enable normal ssh) : > [...] > # 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 You must NOT write this on two lines. This MUST be on one line. This is the reason sshd did not start. Mihai

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Debian 8.3 - packages cannot be installed
by KARL A. WOELFER 30 Jan '16

30 Jan '16

Hello all - I am not able to install x2go on the latest Debian 8.3 (amd64). Is this a known problem? Any workarounds would be greatly appreciated. Thanks, - Karl Here are the dependency/broken packages messages: root# apt-get install x2goserver Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: Reading package lists... 0% The following packages have unmet dependencies: x2goserver : Depends: libconfig-simple-perl but it is not installable Depends: pwgen but it is not installable Depends: libdbd-pg-perl but it is not installable Depends: libdbd-sqlite3-perl but it is not installable Depends: libfile-which-perl but it is not installable Depends: libcapture-tiny-perl but it is not installable Recommends: sshfs but it is not installable Recommends: x11-xfs-utils but it is not installable Recommends: x2goserver-extensions (= 4.0.1.19-0x2go2+git20160126.1064+jessie.main.1) but it is not going to be installed Recommends: x2goserver-xsession (= 4.0.1.19-0x2go2+git20160126.1064+jessie.main.1) but it is not going to be installed E: Unable to correct problems, you have held broken packages. Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: x2goserver : Depends: libconfig-simple-perl but it is not installable Depends: pwgen but it is not installable Depends: libdbd-pg-perl but it is not installable Depends: libdbd-sqlite3-perl but it is not installable Depends: libfile-which-perl but it is not installable Depends: libcapture-tiny-perl but it is not installable Recommends: sshfs but it is not installable Recommends: x11-xfs-utils but it is not installable Recommends: x2goserver-extensions (= 4.0.1.19-0x2go2+git20160126.1064+jessie.main.1) but it is not going to be installed Recommends: x2goserver-xsession (= 4.0.1.19-0x2go2+git20160126.1064+jessie.main.1) but it is not going to be installed E: Unable to correct problems, you have held broken packages.

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Paid Support?
by James M. Pulver 29 Jan '16

29 Jan '16

I'm trying to see if there's a contact for general support on using X2Go, and maybe feature bug fixing. The linked sites on the Wiki don't seem to have an English version, and there's no obvious contact link or e-mail address. I'm mostly looking for a ballpark idea of cost. (i.e. $xx per hour or $xxx for an estimate for work) I'm probably looking at issues on the X2Go Client(cross platforms) and a RHEL6 and 7 compatible server (Scientific Linux to be exact)... Please do contact me if you offer any of these services. -- James Pulver CLASSE Computer Group Cornell University

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Scientific Linux 6 XFCE issue
by James M. Pulver 28 Jan '16

28 Jan '16

It seems that when we run XFCE or custom desktop xfce4-session, we get the same result over X2Go for XFCE - one panel, that is empty. This is not what we get logging into XFCE on the local console of the computer. Google shows this is often an issue on Ubuntu derivatives, or was several years ago. Has anyone else had this issue on RHEL derivatives? Any idea why it doesn't seem to get the expected panel settings? -- James Pulver CLASSE Computer Group Cornell University

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newbie questions and some answers
by Dave Kimble 24 Jan '16

24 Jan '16

It seems that startlxde is part of lxde-common, which is not part of Lubuntu. So if you installed Lubuntu OS you don't have startlxde, whereas if you installed say Ubuntu Server and then added LXDE, you do have startlxde. Anyway I installed lxde-common in Lubuntu, and it all started working. Except the user I get logged in as, doesn't have the settings adjustments I had previously created. This is something to do with /home/username/.config/lxsession/ having both /Lubuntu/ and /LXDE/ folders. It wasn't too time-consuming to set up lxpanel the way I like it, and modify /LXDE/autostart to match /Lubuntu/autostart . I guess I will have to do that 4 times - 2 clients (with screens and keyboards) x 2 servers (headless). I expect this could all be fixed up at the developers' end by adding a LUBUNTU entry to the dropdown list for Session Type, ( and a new set of bindings ?) This needs to be better explained in the blurb too. That just leaves the armhf problem. I have found some hints on building, but I don't know what machine was being used that did it in 1 hour - building wxWidgets took 11 hours for me, and needed a big swapfile too. It would be much better if someone could do it once, centrally, and then maintain an armhf repository. Anyway, x2go works nicely and I'll be sticking with it over x11vnc.

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Newbie questions
by Dave Kimble 11 Jan '16

11 Jan '16

I have 4 machines on my LAN, all running Lubuntu 14.04. 2 of them run headless. One of those has armhf architecture - OrangePi PC is a true amazing piece of kit for $15 All are currently running sshd and x11vnc. x11vnc is not a "real" server as it runs under a logged in user account, so the headless machines have to autologin, which I don't like. So I have installed x2goserver v4.0.5.0, x2golxdebindings, and x2goclient on 3 machines successfully, and set up session info for any machine to access any other. But when x2go client tries to connect, it gets through SSH Key negotiation, it brings up a dark grey screen with x2go logo, and then stops "Unable to execute: startlxde". "mlocate startlxde" doesn't find any files. x2goserver status is up and running. I can't find any x2go.log files, but syslog has: x2goclient[12543]: segfault at 0 ip 00000000004b29ee sp 00007ffc1711ac30 error 4 in x2goclient[400000+25a000] I'm at a loss as to what to do next. Is there a repo for x2go on armhf? A diagram of the architecture of x2go modules would be good.

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