x2go-user August 2011

x2go-user@lists.x2go.org

17 participants
25 discussions

Re: [X2go-User] [X2go-Dev] x2go printing follow up
by Mike Gabriel 17 Aug '11

17 Aug '11

Hi Ted, On Mo 08 Aug 2011 18:04:18 CEST Ted Barnes wrote: > We are experimenting with X2go (very cool), but having a devil of a > time getting printing to work. This request for help is keying off > of posts by John Sullivan and Mario Oroz (thanks so much for those, > guys, e.g., see tread > http://www.mail-archive.com/x2go-user@lists.berlios.de/msg00104.html > and > http://www.mail-archive.com/x2go-user@lists.berlios.de/msg00115.html) We > are having pretty much the same problem as described there. We are > assuming that X2go printing in general can be made "to work" and > that this is a matter of something we are doing wrong (maybe > starting with the install?), some necessary "tweaks", etc. > To make sure you use latest software, please use these sources for installation of the server-side of X2go: Debian+Ubuntu: http://wiki.x2go.org/nightly-built_packages_debian_ubuntu Furtheron for initial debugging, please use x2goclient on Debian or Ubuntu to eradicate some not-so-generic Windows problems. Please install the x2goclient from our nightly builds as well. Nightly builds are for debugging+testing, not for production setups, though! > We'd like to post this on the developer's list too to see if that's helpful. > > We're hoping to get a number of questions answered, and have > provided what may be "too much" description below: > > Questions: > > Q: Did we miss something during the setup and installation process? I will comment your description about setup and installation below, so please read the answers to this question there. The latest general infos are found in our wiki: http://wiki.x2go.org > Q: Our server does not have a /root/.x2go/ssh/.x2oprint/id_dsa" > directory or id_dsa file - do these need to get created by hand? In > fact, our server does not have an "id_dsa" file anywhere on the > machine. If we need to add this, how does one do so (i.e., using > the normal ssh key creation process)? We have some other dsa files, > but not one with the specific name id_dsa (i.e., can we use one of > the existing ones in /etc/ssh?). These RSA/DSA files are part of SSH pub/priv authentication and can be created with the ssh-keygen tool. Refer to its man page for further info. > Q: We assume X2goprint and cups-x2go perl scripts are part of this > picture. We don't believe they are being called by the printing > process - how would we tell? If they are necessary but not getting > called, thoughts as to why they are not getting invoked when we > print and how to fix this? If you refer to x2goprint as separate X2go package then you are definitely using (very) old code. Unfortunately, the www.x2go.org site and our wiki.x2go.org pages to give ambiguous info, this should be fixed and brought in sync ASAP (ping@Heinz!!!). The x2goprint script has become part of the x2goserver package and has undergone some changes since then. Please make sure you use the nightly build packages for testing+debugging for now (this is a recommendation that is valid today, in the future we will bump sub-releases in shorter intervals, the x2goserver esp. is very due for such a nano release... Sorry for delays on this). > Q: In testing (where we simulate what we imagine the printing > process to be by doing each step manually) when we issue the .ready > command, why does that only seems to work sometimes as judged by the > x2go print client popping on the XP side? Does that tell us > something? Good question. If the latest code does not solve your issues, please send the .ready file's content. > Q: Should printing be putting jobs in "/" (is that normal)? Does NO! You use old server-side packages. Upgrade to the nighly builds. > the x2goprint script know what to grab based on job#s? We assume > this all should work with multiple users and the x2goscript > identifies which jobs to grab and put them individual user spool > queues. Yes, this does work with latest code. > Q: To work, should x2goprinting pass the print file from the server > through the ssh connection to the client? Is this in part an "ssh > passing the file" problem? We can connect through putty from the > client to the server, and assume we have the keys correct because we > can connect from XP to the Ubuntu server via x2go in the first > place. Back to the lack of an id_dsa file? Again, we're not sure > that printing is invoking the right scripts to begin with. The print job files are stored on the client via SSHFS. The SSHFS file sharing uses a temporary pub/priv key pair, so for this mechanism it is not relevant if you can SSH to and from the server. The SSHFS mount is issued by the server and connects to the client (via a SSH tunnel). > Q: Assuming we get this working, we also assume that on the > Ghostview/Ghostscript side we shouldn't be having to put the name of > the file in the command line, nor actually having to use the command > line. I.e., there is an option there to print that refers to > whatever default printer we have set on the XP machine, but > currently nothing happens if we use that particular option instead > of the command line. Yes, this should be so. Please test this with a Linux x2goclient first. If this works then check with the Windows x2goclient and report experienced differences. > Q: Should we be using Posgress instead of SQLite? We are assuming > that SQLite is fine until we want to deal with load balancing. If you want to use: o many X2go servers (clustering) o restrictive X2go server access based on posix accounts/groups -> PostgreSQL o one X2go server o access for any non-system posix User (everyone who can use SSH) -> SQLite > DESCRIPTION > > We are connecting from XP machines using x2goclient to Ubuntu Server > 9.10 (connecting is pretty consistent, a few issues now and then but For testing, please use a Linux client. The latest X2go code is only available for Ubuntu >=10.04. For older Ubuntu versions you should be able to either o backport X2go from X2go Git o use the server-side packages for Debian lenny (no nightly builds, though): http://wiki.x2go.org/adding_the_x2go_repository_debian > all in all it works well) over Comcast or Fios connection (DSL too > slow). We are using the X2go with SQLite, cups-x2togo and > x2goprint; we have not installed any of the optional "bindings" > packages. We used visudo to add the line "x2goprint All=(ALL) > NOPASSWD: /usr/bin/x2goprint", and added an "x2goprinter" user by > hand (that action also created an "x2goprinter" group to which we > added our test user accounts). user=groupname='x2goprint', not 'x2goprinter'!!! > We have tried uncommenting the settings to activate them in > "/etc/cups/cups-x2go.conf" (even though we understand these settings > to be used only for a separate cups server) with no change. As > noted above, our server does not have an id_dsa file and while we > suspect that as being part of the problem we would have assumed that > file would be created as part of the install pocess. With latest X2go code, printing works out of the box (to my experience). > On the server, we have a minimal "Ubuntu Desktop" installed so we > can use Firefox to browse from the server. > > We have GSview 4.9 and Ghostscript 9.02 installed on the XP clients. Is this needed for x2goclient??? I do not think so... The Ghostscript stuff is needed on the client side... However, a PDF viewer will be helpful on the Windows client. For testing though: use a Linux machine as a client. > We are trying to print to an older HP Laserjet 4000 shared out on > local XP machine (this 2nd machine is not one connecting to the > Ubuntu server, no X2go on it, no Ghostview or Ghostscript) and > another HP color laser that is a network device. All printing > behavior is the same regardless of which printer we try. Should work. > We are hoping outlining the following will help describe what we > think is going on, and possible not working: > > 1) On the 9.10 Ubunu server, we installed X2go printing. If we go > to System->Administration->Printing, we can see a > "Generic-Cups-X2go-Printer" and it is active. Its properties > include a URI of "cups-x2go:/". On the same Printer Configuration > window, if we press Server->Connect the resulting Cups server is > "/var/run/cups/cups.sock". We are using a 64 bit machine, and can > find two instances of the "cups-x2go" and maybe this is part of the > problem (one is is /usr/lib64/cups/backend, the other in > usr/lib/cups/backend)? AFAIK /usr/lib64 is a symlink to /usr/lib. So no worries necessary about this. The only thing you should make sure is to have these permissions set on the cups-x2go backend: -rwx------ root root /usr/lib/cups/backend/cups-x2go This permission setting marks the backend in a way that CUPS knows it has to start it with root privileges. Otherwise it is started with user privileges and that will fail in this context. > 2) If we print from the server, we briefly see a job get created > both on the top (right) panel and if we are watching in the Print > Configuration window. Jobs are stored in "/" and stay there until > we delete or move them with names that follow the syntax > "jobname-username-cupsjob#". Their permissions are root as owner, > lp as group, and no access for users. -> An old version of x2goprint did this... > For each print file, there is another cups file of some sort stored > in "var/spool/cups" with names like "c00052". This describes what > occurs consistently. The jobs get "printed" but nothing happens on > the windows client side or on the printer. -> Upgrade the server-side to x2goserver from nightly builds (on an Ubuntu >=10.04 machine). > 3) [...] Looking forward to your follow up after you have upgraded X2go (and reported as the new versions you use for testing). Greets, Mike -- DAS-NETZWERKTEAM mike gabriel, dorfstr. 27, 24245 barmissen fon: +49 (4302) 281418, fax: +49 (4302) 281419 GnuPG Key ID 0xB588399B mail: mike.gabriel(a)das-netzwerkteam.de, http://das-netzwerkteam.de freeBusy: https://mail.das-netzwerkteam.de/freebusy/m.gabriel%40das-netzwerkteam.de.x…

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Detecting the client screen resolution.
by Daniel Quiroga 16 Aug '11

16 Aug '11

I am working with pyhoca-cli in mobile devices running debian (some hard work hacking and compiling in old HTC devices) i want to detect the client resolution automatically and switch for the screen resolution, density and desktop that better fit. ¿is there any way or do i need to start coding for it? Thanks! -- Daniel Quiroga www.daniel-quiroga.com cel: 3012745740 —¿Por qué nunca hablamos de Ezequiel? Apoyó las cosas en el piso con mucha calma. Estiró su mano como para acariciarme. Me miró. Bajó la mano. Luego la vista y dijo en un susurro. —Hay cosas de las que es mejor no hablar.

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PyHoca: no x2go session
by Paul van der Vlis 15 Aug '11

15 Aug '11

Hello, I've installed PyHoca-GUI to test it, installation on Debian Squeeze with Gnome was no problem. After starting it, I found an applet. I've started a connection and I got a form where was asked for the password. After giving the password I saw a message that authentication was successfull. But, that was it. I don't see a remote desktop. When I do a mouse-over on the PyHoca-gui applet, I see (translated in English): "Connecting to remote X2go server". Not sure what's happening here. With X2goclient I can connect. What's different? I am wondering the logfile says "WARNING! Connected to remote version 3.4.0 with local version 3.5.0.". I will attach it the file. I will also add the output of pyhoca-cli -d. With regards, Paul. ---------- NXPROXY - Version 3.5.0 Copyright (C) 2001, 2011 NoMachine. See http://www.nomachine.com/ for more information. Info: Proxy running in client mode with pid '6331'. Session: Starting session at 'Mon Aug 15 13:59:42 2011'. Info: Connecting to remote host '127.0.0.1:59745'. Info: Connection to remote proxy '127.0.0.1:59745' established. Loop: WARNING! Connected to remote version 3.4.0 with local version 3.5.0. Warning: Connected to remote version 3.4.0 with local version 3.5.0. Info: Connection with remote proxy completed. Loop: WARNING! Unrecognized session type 'unix-kde-depth_24'. Assuming agent session. Warning: Unrecognized session type 'unix-kde-depth_24'. Assuming agent session. Info: Using ADSL link parameters 512/24/1/0. Info: Using cache parameters 4/4096KB/8192KB/8192KB. Info: Using pack method '16m-jpeg-9' with session 'unix-kde-depth_24'. 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 ':0.0'. Session: Session started at 'Mon Aug 15 13:59:43 2011'. Info: Established X server connection. Info: Using shared memory parameters 1/2048K. --------- paul@server2:~$ pyhoca-cli --server server.acrobatiek.nl -u hans -d /usr/lib/python2.6/dist-packages/Crypto/Util/randpool.py:40: RandomPool_DeprecationWarning: This application uses RandomPool, which is BROKEN in older releases. See http://www.pycrypto.org/randpool-broken RandomPool_DeprecationWarning) pyhoca-cli[7067] NOTICE: preparing requested X2go session pyhoca-cli[7067] (PyHocaCLI) NOTICE: preparing requested X2go session pyhoca-cli[7067] (x2gosessregistry-pylib) NOTICE: registering X2go session Pyhoca-Client_Session... pyhoca-cli[7067] (x2goclient-pylib) NOTICE: initializing X2go session... pyhoca-cli[7067] (x2gocontrolsession-pylib) NOTICE: connecting to [server.acrobatiek.nl]:22 pyhoca-cli[7067] (x2gocontrolsession-pylib) NOTICE: connecting to [server.acrobatiek.nl]:22 pyhoca-cli[7067] (PyHocaCLI) NOTICE: interactive login for user ,,hans'' Password: pyhoca-cli[7067] (x2gocontrolsession-pylib) NOTICE: connecting to [server.acrobatiek.nl]:22 pyhoca-cli[7067] (PyHocaCLI) NOTICE: give the X2go session some time to come up... pyhoca-cli[7067] (PyHocaCLI) INFO: X2go session is now running, the X2go client's profile name is: Pyhoca-Client_Session pyhoca-cli[7067] (PyHocaCLI) INFO: X2go session name is: hans-66-1313410046_stRTERMINAL_dp24 pyhoca-cli[7067] (PyHocaCLI) NOTICE: Press CTRL+C to suspend the running session... ^Cpyhoca-cli[7067] (PyHocaCLI) INFO: Suspending X2go session hans-66-1313410046_stRTERMINAL_dp24 -- Paul van der Vlis Linux systeembeheer, Groningen http://www.vandervlis.nl

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Indirect connection
by Paul van der Vlis 15 Aug '11

15 Aug '11

Hello, I have customers with x2go installations in a local network behind NAT (fat clients), and I am looking for a way how to connect easy to them. Of cause I can make a port forwarding, or an SSH tunnel from the fat client to my computer, but maybe you have a better and more flexible idea? In earlyer times I used TightVNC. There was the great "-via" command, something like: vncviewer -via henk(a)server.henk.nl 192.168.0.33 Any ideas how to be flexible behind NAT with X2go? With regards, Paul van der Vlis. -- Paul van der Vlis Linux systeembeheer, Groningen http://www.vandervlis.nl

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Autolaunching
by CACook＠quantum-sci.com 14 Aug '11

14 Aug '11

I can't find this in any of the docs, wiki, or man page. I want to set up a KDE menu entry to launch x2go sessions automatically. This should involve a command-line something like 'x2goclient Droog' (with Droog being the session I've created), but that doesn't work. # man x2goclient No manual entry for x2goclient See 'man 7 undocumented' for help when manual pages are not available. # x2goclient -h Can't load translator (:/x2goclient_en_us) ! Can't load translator (:/qt_en_US) ! wrong parameter: -h Otherwise, GREAT JOB on x2go peoples! Thank you!

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libssh-4 0.4.7 for Lenny?
by Paul van der Vlis 14 Aug '11

14 Aug '11

Hello, I've installed x2goserver on a machine with Lenny, but strange enough I cannot connect to it. I see a new session, but it crashes. In the sessions file I see: ---------- Loop: WARNING! Connected to remote version 3.2.0 with local version 3.4.0. Loop: WARNING! Unrecognized session type 'unix-kde-depth_24'. Assuming agent session. Proxy: PANIC! Failure reading from the peer proxy on FD#5. Loop: PANIC! No shutdown of proxy link performed by remote proxy. ---------- On the same server I have FreeNX, before this was no problem. In older messages here in the list I see: --------- > BRILLIANT, that is it!!! Debian squeeze still uses libssh-4 0.4.5, > but x2goclient needs a patch (sent to libssh upstream by Oleksandr) > that has entered libssh-4 with version 0.4.7. > > I have already uploaded a Debian squeeze version of libssh-4 0.4.7. > I am also re-building x2goclient against libssh-4 0.4.7. > > Sorry, I presumed that the newer libs were already in Debian > squeeze... --------- Maybe this is the same problem. Is there an libssh-4 0.4.7 for Lenny? Or is Lenny unsupported now? With regards, Paul van der Vlis. -- Linux systeembeheer Groningen http://www.vandervlis.nl

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Re: [X2go-User] Keyboard and X2Go v3
by Arnold Krille 14 Aug '11

14 Aug '11

On Monday 08 August 2011 21:43:40 Daniel Lindgren wrote: > 2011/8/8 Arnold Krille <arnold(a)arnoldarts.de>: > > first time on this list. > > We are using X2Go in our business and encountered a strange problem: With > > the new x2goclient of version 3.something the keyboard is acting funny. > > Sometimes Ctrl or Shift hang, much more often Ctrl+Shift hangs. And > > AltGr always hangs. > > Is this a known problem? Is this perhaps even fixed in the > > development-version? Or is this better to report on the developers > > mailinglist? > > Yes, it's a known problem on the server side and its fixed in later > versions, see http://wiki.x2go.org/ for info about where to find them > for your OS. Okay, I will try to find the latest releases (altough I am pretty sure we have that already installed) and install these. But excuse my doubts, the thing is that this problems happens regardless whether the server is v2 or v3. It appears with x2goclient v3 but not with x2goclient v2 connecting to the same server (the same session even)... Have fun, Arnold

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Re: [X2go-User] offline wiki version
by Benedict Stein 14 Aug '11

14 Aug '11

Last call for offline weeking, it's only a few weeks until I'll leave Europe - the area of cheap an reliable internet connections :) It would be brilliant if you'd manage to isntall the plugin for the offline wiki version before departure.

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Local share appears as a text file in $HOME/Desktop - cluttering the desktop
by Milan Knížek 14 Aug '11

14 Aug '11

Hello, I was finally able to get x2goserver et al working on Arch linux (thanks to all the devs!) and would like to resolve some other matters (some already existed with stable versions of x2go). When sharing a local directory, x2goserver creates a sshfs mount in /tmp, which is linked by $HOME/media/disk/... So far so good. Additionally, there is a file created in $HOME/Desktop: $ cat _home_mu$sshfs-disk$ /tmp/mu_media/disk/_home_mu mu-52-1313337646_stDmk-remote-session.sh_dp24 Is this file (_home_mu(sshfs-disk)) supposed to be clickable and lead to opening of that mounted directory in a file manager? Which file/desktop manager supports that format? (I use PCmanFM in LXDE on Arch linux for managing the Desktop and that file is just displayed as any other ordinary text file.) Regards, Milan -- http://www.milan-knizek.net/ About linux and photography (Czech only) O linuxu a fotografování

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Slow internet connection and background personalization
by Daniel Quiroga 14 Aug '11

14 Aug '11

Hi. i have been playing with x2go and i have to say it, it is an awesome piece of software. I want to use it through really slow connections, wich are the better settings with -q and --pack for it? It is possible to personalize the background of the pyhoca-cli? (when the connection is about to show up it shows a background that says "x2go" and i want to put some another image in there. Thanks. -- Daniel Quiroga www.daniel-quiroga.com cel: 3012745740 —¿Por qué nunca hablamos de Ezequiel? Apoyó las cosas en el piso con mucha calma. Estiró su mano como para acariciarme. Me miró. Bajó la mano. Luego la vista y dijo en un susurro. —Hay cosas de las que es mejor no hablar.

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x2go-user August 2011