IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 4 March 2018 (all times are UTC)
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| 10:13 | <jp_> Hi Alkis
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| 10:14 | I am finally able to get the logon screen show up on the client (raspberyy pi) terminal, but now, after I try to login, the screen comes back again to the login screen.
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| 10:17 | In syslog, I get this error : GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed
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| 10:18 | and then : Failed to connect to Mir: Failed to connect to server socket: No such file or directory
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| 10:19 | Does anyone here know how to fix this issue ? Would be very helpful ...
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| 10:32 | <alkisg> !vnc-edide | echo jp_:
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| 10:32 | <ltsp> jp_: vnc-edide: To share your screen with me, open Epoptes → Help menu → Remote support → Host: srv1-dide.ioa.sch.gr, and click the Connect button
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| 10:46 | <jp_> ok
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| 10:51 | shared ...
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| 10:58 | <alkisg> jp_: I didn't see anything
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| 10:58 | Where's the client? No epoptes client?
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| 11:03 | OK reboot the client now
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| 11:14 | jp_: try to login again
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| 11:14 | directly on the client
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| 11:14 | <jp_> ok
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| 11:23 | <alkisg> jp_: hehe, notes are a problem when you're using IRC :D
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| 11:23 | Chat here or in a private IRC window
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| 11:23 | Yes, if the client is behind NAT, it can't do LDM_DIRECTX
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| 11:25 | So now with LDM_DIRECTX=False, the xterm session works
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| 11:25 | On the other hand, the gnome and kde sessions will be much harder because they don't work for thin clients
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| 11:25 | That's why mate is recommended
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| 11:26 | You could create a "fat chroot" and run the rpi in fat client mode, which means of course that things may become slow...
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| 11:27 | You can either work with changing the LAN setting and LDM_DIRECTX=True (faster), or using LDM_DIRECTX=False as it is now (slower)
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| 11:27 | <jp_> ok, so, if I use the fat chroot, then it the "behind the NAT" issue won't be there ?
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| 11:27 | <alkisg> With a fat chroot you'll be able to use kde and gnome. But no ltsp developer is using those, so they're not very tested
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| 11:28 | E.g. I've heard that KDE is causing hundreds of MB of cache on each ltsp login
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| 11:29 | <jp_> ok then, let me change the setup to a LAN-LAN type and then try again
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| 11:29 | <alkisg> Remember you'll also need to upgrade the chroot to fat
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| 11:31 | <jp_> chroot to fat ? But I thought if I want to run using thin-client, then all I need to do is make my kubunto be able to ping the raspberry (LAN to LAN, instead of LAN to WAN), and then change LDM_DIRECTX to 'True'
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| 11:31 | Or, did I miss something ?
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| 11:31 | <alkisg> Yes you missed it
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| 11:32 | KDE and Gnome don't run in thin mode
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| 11:32 | (without a lot of effort)
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| 11:32 | <jp_> :-))
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| 11:32 | <alkisg> (01:25:43 μμ) alkisg: On the other hand, the gnome and kde sessions will be much harder because they don't work for thin clients
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| 11:32 | (01:25:49 μμ) alkisg: That's why mate is recommended
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| 11:33 | KDE might work more easily because it also supports non opengl logins
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| 11:33 | But I haven't used KDE in ages, so I don't know the specifics
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| 11:33 | <jp_> so, what you suggest is :
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| 11:34 | 1. change to LAN to LAN
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| 11:35 | 2. Run the steps as in : "Converting the thin chroot to a fat chroot" as in (https://help.ubuntu.com/community/UbuntuLTSP/RaspberryPi)
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| 11:36 | 3. set : LDM_DIRECTX=True
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| 11:36 | 4. Voila ! (?)
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| 11:39 | <alkisg> Yes, although LDM_DIRECTX doesn't matter for fat chroots
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| 11:39 | And, (5) use mate
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| 11:41 | <SmashK> hi
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| 11:41 | add-apt-repository ppa:ts.sch.gr; apt update does not work anymore
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| 11:44 | <alkisg> In which distro/version? Paste the whole output to pastebin
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| 11:46 | <SmashK> debian 9.3-i386
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| 11:48 | <SmashK2> add-apt-repository: command not found...
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| 11:49 | <alkisg> Yes, this command is for ubuntu
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| 11:49 | Not for debian
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| 11:49 | And this repository too
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| 11:50 | <SmashK2> got it done in the old amd64 LTSP-server with that, too
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| 11:50 | but I remember to do something to use this command before
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| 11:51 | apt-get install python-software-properties
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| 11:53 | is obsolete, must be: apt-get install software-properties-common
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| 11:55 | then I can install ltsp-manager
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| 11:55 | <alkisg> that repository contains ubuntu packagds
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| 11:55 | *packages
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| 11:55 | for debian, use debian experimental
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| 11:55 | it says so in the wiki
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| 11:55 | <SmashK> where?
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| 11:56 | do you have a link?
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| 11:58 | <alkisg> !ltsp-manager
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| 11:58 | <ltsp> ltsp-manager: LTSP Manager is a GUI tool that makes LTSP maintenance easy. It's the recommended way to install LTSP in common setups. More info: http://wiki.ltsp.org/wiki/Ltsp-manager
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| 11:58 | <alkisg> http://wiki.ltsp.org/wiki/Ltsp-manager/Installation => Currently, LTSP Manager is only available in Debian Experimental and in Ubuntu 16.04 via the Greek schools PPA. If you're using Ubuntu, to add the PPA to your sources, run:
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| 11:59 | You're not using Ubuntu, don't add the ppa
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| 11:59 | Use debian experimental sources
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| 12:00 | https://packages.debian.org/search?keywords=ltsp-manager and https://wiki.debian.org/DebianExperimental
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| 12:21 | <SmashK2> question beside of ltsp: node won't start with that i386-arch
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| 12:21 | 8254 is not connected to IO-APIC
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| 12:21 | <alkisg> Do you mean that debian doesn't start on a client of yours? Why not ask in #debian?
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| 12:22 | You can also test with a live usb if you suspect hardware error
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| 12:24 | <SmashK2> yep, that node (old server) does not start that Debian 9.3-i386
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| 12:24 | where to find that #Debian?
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| 12:25 | <alkisg> Type this: /join #debian
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| 12:25 | It's an IRC channel.
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| 17:31 | <jp_> Hi Alkis. So, finally it works with the thin client (but very very slow) :-(
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| 17:32 | I didn't setup the fat client yet. So using the Kubuntu thin client itself.
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| 17:34 | I had to add a small entry in lts.conf (LDM_SESSION="plasma") to get the KDE running on the client.
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| 17:36 | Thanks for all the help Alkis. Will try out with the fat client later and see if it makes things better.
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| 17:47 | At the moment, it seems like working on a pre-historic machine ... :-)
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| 21:52 | <Nitrigaur> alkisg, I have followed your advice and installed x2go server and client. I'm about to test it. thanks again :-)
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| 22:44 | <Nitrigaur> alkisg, works fine locally on a VM. Tomorrow for the big test on the institute network :-)
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| 23:39 | <Nitrigaur> \q
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