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Re: [X2Go-User] [X2Go-Dev] Bug#471: Bug#471: ATTENTION @Mike#1 - serious bug in x2goserver upgrade script (debian wheezy+squeeze)
by Stefan Baur 03 Apr '14

03 Apr '14

Further Info: 1) I'm guessing it's a race condition, with two instances of x2gocleansessions running simpultaneously and locking each other up: e.g. sample output: ps ax|grep clean 1995 ? S 0:36 /usr/bin/perl /usr/sbin/x2gocleansessions 16142 pts/0 S+ 0:05 /usr/bin/perl /usr/sbin/x2gocleansessions 2) The kill command given below in my previous e-mail doesn't work. What worked was this: ps ax | grep x2gocleansessions | grep perl \ | awk ' { print $1 }' | xargs -n 1 kill (the backslash is so it can be broken up in two lines) You have to run this in a second terminal session (as root) while the apt-get upgrade process is stuck in the first. It will then continue without reporting an error. -Stefan Am 03.04.2014 09:52, schrieb Stefan Baur: > Gah. E_NOTENOUGHCAFFEINE. This was supposed to go to the list and > bugtracker as well. > > > -------- Original-Nachricht -------- > Betreff: Re: [X2Go-Dev] Bug#471: ATTENTION @Mike#1 - serious bug in > x2goserver upgrade script (debian wheezy+squeeze) > Datum: Thu, 03 Apr 2014 09:50:09 +0200 > Von: Stefan Baur <newsgroups.mail2(a)stefanbaur.de> > Antwort an: Stefan Baur <newsgroups.mail2(a)stefanbaur.de>, > 471(a)bugs.x2go.org, x2go-dev(a)lists.berlios.de > An: Mike Gabriel <mike.gabriel(a)das-netzwerkteam.de> > > Addendum: > > This is part of the "ps ax" output on one of the affected machines: > > 2563 pts/2 S+ 0:00 apt-get upgrade -y > 4958 pts/1 S+ 0:00 /usr/bin/perl -w /usr/share/debconf/frontend > /var/lib/dpkg/info/x2goserver.postinst configure 4.0.1.13-0x2go1+ > 4962 pts/1 Z+ 0:00 [x2goserver.post] <defunct> > 5004 pts/1 S+ 0:00 /usr/bin/perl /usr/sbin/x2gocleansessions > > manually killing x2gocleansessions (" kill $(pidof x2gocleansessions)") > seems to be a workaround, but still, we need a real fix in the form of > an updated package. > > -Stefan > > Am 03.04.2014 08:47, schrieb Stefan Baur: >> Package: x2goserver >> Severity: grave >> Version: 4.0.1.14 >> >> Hi Mike, >> >> this is happening on >> >> x2goserver (4.0.1.14-0x2go1+git20140402.842+squeeze.main.1) >> >> as well. >> >> Please help! All my machines are stuck in the upgrade process! This is >> not good! >> >> -Stefan >> >> >> -------- Original-Nachricht -------- >> Betreff: [X2Go-User] Unable to upgrade >> Datum: Wed, 2 Apr 2014 19:14:53 +0300 >> Von: Panayotis Katsaloulis <panayotis(a)panayotis.com> >> An: x2go-user(a)lists.berlios.de >> >> Hello all! >> >> I have installed x2go, I can connect - everything is fine. >> In the past I think there was a problem when I tried to launch a client >> (as xterm session), and which I was unable to properly close, so I >> forced close it. >> >> The problem is that I am unable to upgrade through apt-get upgrade though. >> >> Now when I try to upgrade I get this message: >> >> Processing triggers for menu (2.1.46) ... >> Setting up x2goserver (4.0.1.14-0x2go1+git20140402.842+wheezy.main.1) ... >> Group x2gouser already exists. >> User x2gouser already exists. >> [info] Cleaning up stale X2Go sessions.. >> >> … and the screen remains like this forever. >> >> The uname -a command produces the following result: >> >> Linux danube 3.13-1-amd64 #1 SMP Debian 3.13.7-1 (2014-03-25) x86_64 >> GNU/Linux >> >> Any help? >> >> -- >> Panayotis >> >> >> _______________________________________________ >> X2Go-User mailing list >> X2Go-User(a)lists.berlios.de >> https://lists.berlios.de/mailman/listinfo/x2go-user >> _______________________________________________ >> X2Go-Dev mailing list >> X2Go-Dev(a)lists.berlios.de >> https://lists.berlios.de/mailman/listinfo/x2go-dev >> > _______________________________________________ > X2Go-Dev mailing list > X2Go-Dev(a)lists.berlios.de > https://lists.berlios.de/mailman/listinfo/x2go-dev >

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Re: [X2Go-User] X2Go-User Digest, Vol 44, Issue 2
by Nigra Truo 03 Apr '14

03 Apr '14

> > Message: 4 > Date: Tue, 01 Apr 2014 16:18:39 +0200 > From: "GZ Nianguan E.T." <opensource(a)gznianguan.com> > To: x2go-user(a)lists.berlios.de > Subject: Re: [X2Go-User] X2Go-User Digest, Vol 43, Issue 24 > Message-ID: <lhehs0$815$1(a)ger.gmane.org> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > Hi, > > I cant remember ever having to start something on the local display... > Just make sure you log in with the same user on X2Go and you are logged > in with on the local display.... > > In the X2Go connection settings, under "Session Type" select "Connect > to local desktop" then when you log in you should see a list of local > displays you can connect to... at least you should see one (:0) if > there is a local X running.. Oh, thanks! I did not even see that setting and it does work, I just tried it. But it is always read only in my case, I cannot click on anything or move windows, even if I set full access. Markus

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Re: [X2Go-User] Unable to upgrade
by Andreas Yankopolus 03 Apr '14

03 Apr '14

I'm having the same problem on my Ubuntu 13.10 system. $ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 13.10 Release: 13.10 Codename: saucy $ uname -a Linux phobos 3.11.0-19-generic #33-Ubuntu SMP Tue Mar 11 18:48:34 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

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Printing on RHEL 6.5 Server
by Eric Work 03 Apr '14

03 Apr '14

I'm trying to print from a RHEL 6.5 server running both x2goserver and cups to a Fedora 20 client. Both are running x2go 4.0.1.3. I have installed the x2goserver-printing and cups-x2go packages for RHEL. I have added the virtual printer to the cups server. On the client I have setup printing to show the dialog and start evince to view the PDF. When I attempt to print something, select the virtual printer, then click print, nothing happens. I see a pdf file in the cups spool directory but nothing in the client spool directory. When I attempt to manually copy the pdf file to this directory nothing happens. Maybe this is expected. I see from strace that x2goclient is reading the contents of the client spool directory and the number of files changes but it doesn't do anything. Is there something related to fuse and sshfs that prevents the cups/x2goserver processes from copying over the generated PDF? Is copying the file to the client spool directory not enough? Is there some other sort of signal passed from the server to the client to initiate printing? Below are the log messages I get when I try to print, which doesn't seem to have any clear error messages. Apr 2 22:33:31 XXX /usr/lib/cups/backend/cups-x2go[6070]: Print job received from cups -> 5 YYY Google 1 Resolution=300dpi number-up=1 PageSize=Letter job-uuid=urn:uuid:c5c9e233-bfff-31c5-69e9-9ebed5ec4207 job-originating-host-name=localhost Apr 2 22:33:31 XXX /usr/lib/cups/backend/cups-x2go[6070]: Print job comes from STDIN, writing incoming job to temp file /tmp/5-YYY-cupsjob6070 Apr 2 22:33:31 XXX /usr/lib/cups/backend/cups-x2go[6070]: Converting printjob with command: /usr/bin/gs -q -dCompatibilityLevel=1.4 -dNOPAUSE -dBATCH -dSAFER -sDEVICE=pdfwrite -sOutputFile="/tmp/5-YYY-cupsjob6070.pdf" -dAutoRotatePages=/PageByPage -dAutoFilterColorImages=false -dColorImageFilter=/FlateEncode -dPDFSETTINGS=/prepress -dDoNumCopies -c .setpdfwrite -f "/tmp/5-YYY-cupsjob6070" Apr 2 22:33:32 XXX /usr/bin/x2golistsessions[6073]: x2golistsessions has been called with options: --all-servers Apr 2 22:33:32 XXX /usr/bin/x2goprint[6081]: x2goprint has been called with options: YYY YYY-50-1396503119_stDGNOME_dp24 YYY-50-1396503119_stDGNOME_dp24_5-YYY-cupsjob6070.pdf YYY-50-1396503119_stDGNOME_dp24_5-YYY-cupsjob6070.pdf.title Apr 2 22:33:32 XXX /usr/bin/x2goprint[6081]: x2goprint is processing /var/spool/x2goprint/YYY-50-1396503119_stDGNOME_dp24_5-YYY-cupsjob6070.pdf with print job title ,,Google'' Any help would be appreciated. -Eric

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Keyboard mapping hosed with latest update
by Andreas Yankopolus 03 Apr '14

03 Apr '14

I've run into the same problem as Panayotis with x2goserver freezing on "cleaning up stale x2go sessions" during the upgrade process. I can break out from that, but connecting from the Windows x2go client v4.0.1.3 results in a keyboard mapping that's completely hosed: q maps to y, w maps to t, etc.

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Unable to upgrade
by Panayotis Katsaloulis 02 Apr '14

02 Apr '14

Hello all! I have installed x2go, I can connect - everything is fine. In the past I think there was a problem when I tried to launch a client (as xterm session), and which I was unable to properly close, so I forced close it. The problem is that I am unable to upgrade through apt-get upgrade though. Now when I try to upgrade I get this message: Processing triggers for menu (2.1.46) ... Setting up x2goserver (4.0.1.14-0x2go1+git20140402.842+wheezy.main.1) ... Group x2gouser already exists. User x2gouser already exists. [info] Cleaning up stale X2Go sessions.. … and the screen remains like this forever. The uname -a command produces the following result: Linux danube 3.13-1-amd64 #1 SMP Debian 3.13.7-1 (2014-03-25) x86_64 GNU/Linux Any help? -- Panayotis

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Re: [X2Go-User] X2Go-User Digest, Vol 43, Issue 24
by Nigra Truo 01 Apr '14

01 Apr '14

> > > I do think you need OpenCL to work with the GPU of the ATI card... > > http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/GPU_Rendering > Yes, you will need OpenCL, but it more complicated than this: for some reason, OpenCL is deactivated in Blender on Linux. There is no way to find out why, there are threads with like 18237823 posts where I could not gather what the status now is. > > Though I suspect that could also cause trouble by trying to use the GPU > for the "work view" too.... > It could be that it already, all by it self figure out that it wants to > use your ATI card? > > If you open a xterm in the X2Go session and crank this: > "blender -d -f 1 -b" does it render a cube to your /tmp/ ? > > > Yes, just tried that. That does render a cube. > Btw. how would X2Go shadowing :0 work for you? > > > > I'm not familiar with shadowing or what that means. Do you mean running x2godesktopsharing on the physical display on the server and then connecting to it via X2goclient? I was not even aware that x2godesktopsharing worked already, just tried that out. Is there a way to enable desktop sharing for every session automatically? > Just skimmed through the doc... looking forward to see the videos. > I will do these in the next days. I thought it might be cool to be able to show somebody what the whole process looks like, visually demonstrate what X2go can do. As they say in German: Ein Bild sagt mehr als tausend Worte. A Picture is speaks more than a thousand words. But well, video has more than a thousand words per frame, so 24 fps, that would be more than 24k words per second ;-) I guess applying cold math to a artistic proverb might not work. > As for IRC... make sure you are on a freenode server... then enter #x2go > rom > What IRC client are you using? > You should always see a bunch of other users.... but quite often it can > be a very quiet place... > > I'm using the one that gets bundled with KDE, don't know how it is called. I will log in and stay online 24/7, I think that should do the trick. Thanks, Markus

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Again x2go and network manager
by Buddy Butterfly 31 Mar '14

31 Mar '14

Hi guys, sorry to warm up this topic again. We upgraded to Kubuntu 13.10. Now network manager is again not working. Because of the problems of the earlier Ubuntu versions we already have corrected all .../polkit-1/actions to the same for interactive. Now we are not able to activate the network manager again. We do need to have a this gui for vpn etc. We are lost. Any ideas? Thanks, Matt

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Re: [X2Go-User] X2Go-User Digest, Vol 43, Issue 23
by Nigra Truo 30 Mar '14

30 Mar '14

Hi Mike, we talked some month back about me helping with some X2go documentation. I wrote some things, kinda like a newbie intro, please see here: https://docs.google.com/document/d/1ioso0_lZkIQrgYkhvbaZg8PBgwqG9u-uEDWtG5z… I don't know how the wiki works and how to get write access to it, otherwise I would include it right away. I logged into the IRC chatroom, but I don't know if I did it correctly (my first time on IRC ever), because I saw nobody else online. It might be easier to discuss this over IRC, but I would have to see about timing (my time zone is PST) In the linked document, you see that I mention 2 Videos, one about a typical X2go session and one about how Thinclient looks like, I still have to do these video. Thanks, Markus On Sun, Mar 30, 2014 at 3:00 AM, <x2go-user-request(a)lists.berlios.de> wrote: > Send X2Go-User mailing list submissions to > x2go-user(a)lists.berlios.de > > To subscribe or unsubscribe via the World Wide Web, visit > https://lists.berlios.de/mailman/listinfo/x2go-user > or, via email, send a message with subject or body 'help' to > x2go-user-request(a)lists.berlios.de > > You can reach the person managing the list at > x2go-user-owner(a)lists.berlios.de > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of X2Go-User digest..." > > > Today's Topics: > > 1. Re: Win32 X2Go Client: Please Test nightly 4.0.2.0 build with > newer dependencies (Mike Gabriel) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Sat, 29 Mar 2014 21:58:25 +0000 > From: Mike Gabriel <mike.gabriel(a)das-netzwerkteam.de> > To: Stefan Baur <newsgroups.mail2(a)stefanbaur.de> > Cc: x2go-user(a)lists.berlios.de > Subject: Re: [X2Go-User] Win32 X2Go Client: Please Test nightly > 4.0.2.0 build with newer dependencies > Message-ID: > < > 20140329215825.Horde.pv6vFaMgy1wVTB-AaVJBHA1(a)mail.das-netzwerkteam.de> > > Content-Type: text/plain; charset="utf-8"; Format="flowed"; > DelSp="Yes" > > HI Stefan, > > On Fr 21 M?r 2014 08:36:12 CET, Stefan Baur wrote: > > > Am 21.03.2014 02:22, schrieb Mike Gabriel: > > > >> And for the Mac users: we recently set up nightly builds for the > >> Mac OS X version of X2Go Client. Please also test these .dmg > >> installers [1]. Give feedback to Oleksandr Shneyder if you observe > >> any issues with the Mac OS X version. > > > > Does that mean we won't be needing my Mac mini any more? > > Or did you set this up on my machine? :-) > > the nightly builds run on Alex's Mac. But the release builds should be > built on your Mac Mini (as Clemens is doing those). > > Mike > -- > > DAS-NETZWERKTEAM > mike gabriel, herweg 7, 24357 fleckeby > fon: +49 (1520) 1976 148 > > GnuPG Key ID 0x25771B31 > 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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Re: [X2Go-User] X2Go-User Digest, Vol 43, Issue 21
by Nigra Truo 30 Mar '14

30 Mar '14

> Date: Thu, 27 Mar 2014 12:25:04 +0100 > From: "GZ Nianguan E.T." <opensource(a)gznianguan.com> > To: x2go-user(a)lists.berlios.de > Subject: Re: [X2Go-User] Running Blender 3d in X2go > Message-ID: <lh11q1$kue$1(a)ger.gmane.org> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > Hi, > > May I ask what's your particular use case for Blender3D via X2Go? > I cant imagine working on 3D modelling via X2Go being a very productive > solution. > > If your just using remote machine for render and not design... there is > better ways to do that... from the command line. > We got some code laying around somewhere, for blander render clusters... > though its a bit old and I'm not sure if it works even with the current > version of blender... Though if that's what you need shoot me a private > e-mail and I'll see if we can help you out. > > > -GZNGET > > Hi, thanks for the reply. I indeed do network rendering. I'm using the official network rendering plugin of Blender. It allows to set a master server, that coordinates all the rendering effort. Then you set slaves that do the actual rendering and connect to the master. Then, from a blender instance set to client, you can send render requests to the master and that then distributes it around to the slaves. I have some GPUs sitting around that I want to attach to x2go servers and use them as slaves. So you run at least 3 instances of blender with these 3 different roles. The configuration in Blender for this cannot be done on the command line so far (the render script is still marked as experimental) and for this I need to start up blender with the interface, which I cannot. I did setup some .blend files that are set on master and slave to run these via the command line, but that no longer works for some reason. It might be that the config got changed, but I cannot even get into the GUI to check. The funny thing is that before I had the ATI card in the X2go server, it worked flawlessly. The GUI rendering was not fluid, but pretty usable. Now that I installed the proprietary drivers on it and X is running on the server (a strange requirement in order to use GPU rendering at all), blender segfaults. I would be interested in the rendering script that you might have, but I won't be able to use it if I cannot set the configuration on the server to use the right compute device, and so far it looks like blender, as GUI program does not offer the full configuration options on the command line. Thanks, Markus > From: Marcus Moeller <marcus.moeller(a)gmx.ch> > To: x2go-user(a)lists.berlios.de > Subject: Re: [X2Go-User] LXDE window decoration flickers > Message-ID: <5335120C.1030205(a)gmx.ch> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > X2Go-User mailing list > X2Go-User(a)lists.berlios.de > https://lists.berlios.de/mailman/listinfo/x2go-user > > End of X2Go-User Digest, Vol 43, Issue 21 > ***************************************** >

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