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x2gothinclinet / tmpfs
by Moritz Struebe 11 Apr '11

11 Apr '11

Hi there as there has been some talk about tmpfs on the list, I decided to start the tmpfs branch on the official server. You can find it here: http://code.x2go.org/gitweb?p=x2gothinclient.git;a=shortlog;h=refs/heads/tm… The interesting folder is the x2gothinclientmanagement. There is a short README explaining what the different scripts do. Please remember, that this is work in progress and not very well tested. None the less it should speedup your thin-client creation. Patches or comments are very welcome. Cheers Morty P.s: Mike: Could you delete the accidental tempfs (with e) - branch. -- Dipl.-Ing. Moritz 'Morty' Struebe (Wissenschaftlicher Mitarbeiter) Lehrstuhl für Informatik 4 (Verteilte Systeme und Betriebssysteme) Friedrich-Alexander-Universität Erlangen-Nürnberg Martensstr. 1 91058 Erlangen Tel : +49 9131 85-25419 Fax : +49 9131 85-28732 eMail : struebe(a)informatik.uni-erlangen.de WWW : http://www4.informatik.uni-erlangen.de/~morty

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Re: [X2go-dev] [X2go-user] 10x printing speed increase for x2go printing
by Mike Gabriel 11 Apr '11

11 Apr '11

Hi Phil, On Mo 11 Apr 2011 10:26:16 CEST "--[ UxBoD ]--" wrote: > Agreed Mike; though I have the feeling it may be less worth than the > effort involved unless somebody knows the internal working of Perl > and SSHFS ? A sleep could be added though I have tried to avoid > slowing down the process to much. Since adding that loop code we > have not experiencing any further failures; though time will tell. I already had a look at the printing code in x2go some time ago. There basically are three components: o cups-x2go o x2goprint o x2goclient If I recall it corrently the interaction between cups-x2go and x2goprint was not optimal then. I guess it was cups-x2go that left over some print job files whenever a print job was sent to the client, but I am not sure anymore. A person that was not in the x2goprint group also created orphaned print jobs in /, because they were not picked up properly by x2goprint. My observations all were a little odd. Whenever I have time, I will take a look at the mechanism and come up with some patches. The x2goprint <-> x2goclient communication is rather simple: x2goprint drops two job files in the spool dir: <job>.pdf and <job>.pdf.ready. The X2go client has to run a thread that watches this spool dir (it's in the x2go session cache folder under ~/.x2go/C-.../spooll). On each incoming print job it has to wake up and take over the task of processing the print job. My Python implementation of this printqueue can be found here (if you prefer Python to Perl for a lecture...): http://code.x2go.org/gitweb?p=python-x2go.git;a=blob;f=x2go/printqueue.py;h… 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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Re: [X2go-dev] [X2go-user] 10x printing speed increase for x2go printing
by --[ UxBoD ]-- 11 Apr '11

11 Apr '11

----- Original Message ----- > Hi Phil, > > On Sa 09 Apr 2011 09:29:49 CEST "--[ UxBoD ]--" wrote: > > > if( $mounts=~m/$spooldir/) > > { > > move ("$printdir/$file", "$spooldir") or die "$!: Can't rename > > $file to $homedir/.x2go/C-$session/$file"; > > $file $spooldir""); > > > > my $counter = 0; > > while ( ! -f "$spooldir/$file.ready" && $counter < 10 ) > > { > > open (RFILE,">$spooldir/$file.ready"); > > print RFILE "$filen$title"; > > close (RFILE); > > $counter = $counter + 1; > > } > > if ( $counter > 1 ) { syslog("info", "Failed to write ready > > file - Count $counter - C-$session/$file"); } > > } > > else > > { > > unlink("$printdir/$file"); > > } > > I am not sure if this really is a solution to what you observe. This > only seems like a workaround. The syslog entry however is valuable. > > Do you think you can find some time to debug what is really going on? > We actually need documentation of what happens during > cups-x2go/x2goprint'ing... > > Maybe we will find a solution that really tracks the issue down > instead of looping around it (wouldn't it need some sort of a sleep > statement in the loop?). > > Greets, > Mike > Agreed Mike; though I have the feeling it may be less worth than the effort involved unless somebody knows the internal working of Perl and SSHFS ? A sleep could be added though I have tried to avoid slowing down the process to much. Since adding that loop code we have not experiencing any further failures; though time will tell. Thanks, Phil

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Re: [X2go-dev] [X2go-user] 10x printing speed increase for x2go printing
by Mike Gabriel 10 Apr '11

10 Apr '11

Hi John, (Cc:ing this also to x2go-dev) On Fr 08 Apr 2011 15:38:32 CEST "John A. Sullivan III" wrote: > Phil has patched the x2goprint script to fix the disappearing print job > problem and will be posting those patches to the dev list shortly. Please note that I have also patched x2goprint that's stil pending for inclusion in x2goserver (we will drop the separate x2goprint project): http://code.x2go.org/gitweb?p=x2goserver.git;a=shortlog;h=refs/heads/pendin… The patch makes x2goprint usable on NFS mounted home directories. Furthermore, I guess it needs patches of cups-x2go as well. Because there are indeed some lost jobs and also zombie files that collect up (e.g. in /). I guess the best approach for providing patches and share your work would be to work on the code base in Git on code.x2go.org. 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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PyHoca-GUI win32 bundle installer
by Mike Gabriel 08 Apr '11

08 Apr '11

Hi there, during the last two days Dick and I have created a bundle installer for PyHoca-GUI. The bundle contains: PyHoca-GUI (incl. pulseaudio, nxproxy) VcXsrv 1.10.10.1 Ghostscript 9.01 (32bit) GSView 4.9 (32bit, needed for direct printing support) Check this URL for download: http://code.x2go.org/releases/binary-win32/pyhoca-gui/ For further info, please consult the README.WindowsInstaller in the same folder... 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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VcXsrv clipboard issue
by Dick Kniep 08 Apr '11

08 Apr '11

Hi list, Mike has developed a very nice python gui client. We are going to use this with our product. However it seems that with the latest version of VcXsrv (1.10.0) there is an issue with the clipboard. Copying from my PC to the X-session works OK. However, the other way around does not. There is a new parameter --clipboardprimary that should alter the behaviour of the clipboard. However it does not seem to make any difference. Anyone else seen this behaviour and hopefully knows something to solve this? Dick Kniep Lindix BV tel. 036-5215580 mob. 06-50991858

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x2gothinclient w/o LDAP
by Mike Gabriel 08 Apr '11

08 Apr '11

Hi Morty, I have a customer that has patched the x2gothinclient to use local session profile files. On the way he discovered that X2go thin client systems do not have the loop network device set up. Could you give your opinion on that? File: "/etc/init.d/ramdrive" after: cat /proc/mounts> /ramdrive/mtab # setup lo interface ifconfig lo 127.0.0.1 netmask 255.0.0.0 He also has modified the thinclient script in a way that you can run x2goclient on the thin client without LDAP. He provides a session profile ,,sessions file'' and puts that into ~/.x2goclient/sessions. But he also need some fixes for that. Maybe we see an option to incorporate this in the x2gothinclient, so that both methods are available in the code and it merely needs some commenting and uncommenting or whatsoever to enable/disable LDAP/sessions-file. Here are the changes he proposes: ############################################################################### Datei "/etc/default/x2gothinclient" x2goclient --external-login=/ramdrive/logins --no-menu --maximize --link=lan --kbd-layout=de --kbd-type=pc105/de --set-kbd=1 --geometry=fullscreen --add-to-known-hosts --read-exports-from=/ramdrive/export ############################################################################### mkdir -p /home/image/x2goclient/.x2goclient/ Create file: /home/image/x2goclient/.x2goclient/sessions (s.below) [20110318121437951] speed=4 pack=16m-jpeg quality=9 fstunnel=true export= fullscreen=true width=1280 height=1024 dpi=96 setdpi=false usekbd=true layout=de type=pc105/de sound=true soundsystem=pulse startsoundsystem=true soundtunnel=true defsndport=true sndport=4713 print=true name=Sunray icon=:icons/128x128/x2gosession.png host=192.168.100.52 user= key=fsdfasdfsdafsa sshport=22 rootless=false applications=WWWBROWSER, MAILCLIENT, OFFICE, TERMINAL command=GNOME rdpoptions= rdpserver= [20110325095837365] speed=2 pack=16m-jpeg quality=9 fstunnel=true export= fullscreen=false width=800 height=600 dpi=96 setdpi=false usekbd=true layout=de type=pc105/de sound=true soundsystem=pulse startsoundsystem=true soundtunnel=true defsndport=true sndport=4713 print=true name=KHK Server icon=:icons/128x128/x2gosession.png host=192.168.100.52 user= key= sshport=22 rootless=false applications=WWWBROWSER, MAILCLIENT, OFFICE, TERMINAL command=rdesktop -n x2go 192.168.100.2 rdpoptions= rdpserver=192.168.100.2 ################################################################################ File: "/etc/init.d/ramdrive" nach: cat /proc/mounts> /ramdrive/mtab # setup lo interface ifconfig lo 127.0.0.1 netmask 255.0.0.0 # copy configs cp -a /home/image/* /ramdrive/ 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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libjpeg-turbo
by Mike Gabriel 08 Apr '11

08 Apr '11

Hi there, has anyone libjpeg-turbo in connection with X2go up and running??? On Debian squeeze or Ubuntu? Greets+thanks, 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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Help us with the X2go-Wiki
by Mike Gabriel 07 Apr '11

07 Apr '11

Hi all, many of you have implemented many features and use cases of X2go. This set of brilliant ideas is still not in public and it will be scattered over the internet (in newsgroups archives etc.) or even lost if we do not take our time to bundle this valuable knowledge. So I may ask from you all: Please help us fill or Wiki. May I ask people to become active and help documenting X2go? We are esp. interested in your modifications and adaptations of X2go? Please send a request mail to either of these lists (x2go-user, x2go-dev) to get a Wiki account and your request will be processed ASAP. The developers (Heinz, Alex, Morty, Reinhard, Arw, Mike, ...) are also going to use the wiki more intensively in the future. For the current roadmap you can visit this page: http://wiki.x2go.org/roadmap Looking forward for more collaboration!!! 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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libjpeg-turbo
by brian mullan 07 Apr '11

07 Apr '11

Mike I've been using libjpeg-turbo for months now on both ubuntu 10.04 and 10.10 (x2go clients & servers). I put it on both client machine & on server assuming it would benefit jpeg cpu utilization and although I don't have the info handy now I thought I'd sent out a couple screen shots of cpu utilization with and with-out libjpeg-turbo installed. Sorry I can't remember the number off-hand but there was a pretty significant difference On the client machine that may or may not mean much but on a server hosting a lot of desktop users I figure its a good cheap performance (or capacity) bump depending on how you looked at it. I "think" the new debian and the upcoming ubuntu may it in their repositories now. I'm assuming other distro's too? http://libjpeg-turbo.virtualgl.org/ Brian

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