IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 25 February 2018 (all times are UTC)
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| 07:47 | <jp_> Hi. I have installed LTSP on a normal desktop (Intel Core2 / 4GB ram) running 64bit Kubuntu 16.04.3LTS. And I want to connect to it using a RaspberryPi-3.
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| 07:48 | I followed the steps as in : http://wiki.ltsp.org/wiki/Ltsp-manager/Installation
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| 07:49 | And, post this I ran the steps as in : https://help.ubuntu.com/community/UbuntuLTSP/RaspberryPi
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| 07:50 | I want to install only the thin client.
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| 07:50 | When I run the step : ltsp-build-client --arch armhf --config /etc/ltsp/ltsp-build-client-raspi2.conf
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| 07:53 | I get an error message :
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| 07:54 | Selecting previously unselected package linux-image-raspi2. Preparing to unpack .../linux-image-raspi2_4.10.0.1016.17_armhf.deb ... Unpacking linux-image-raspi2 (4.10.0.1016.17) ... Processing triggers for man-db (2.7.5-1) ... Setting up linux-image-4.10.0-1016-raspi2 (4.10.0-1016.19) ... Running depmod. update-initramfs: deferring update (hook will be called later) Examining /etc/kernel/postinst.d. run-parts: executing /etc/kernel/posti
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| 07:55 | <alkisg> !pastebin
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| 07:55 | <ltsp> pastebin: try !paste
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| 07:55 | <alkisg> !paste
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| 07:55 | <ltsp> paste: the LTSP pastebin is at http://ltsp.pastebin.com. Please paste all text longer than a line or two to the pastebin, as it helps to reduce traffic in the channel. Don't forget to paste the URL of the text here.
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| 07:58 | <jp_> The error message that I get is : https://pastebin.com/iNLAM5zi
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| 08:00 | <alkisg> There's a bug in ltsp-update-sshkeys, you need to apply this patch on the server to fix it: https://git.launchpad.net/ltsp/commit/?id=b1030c40f40930928f2f114f96419edbeddb5e17
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| 08:34 | <jp_> Thanks for the moment Alkis. I am now rerunning the ltsp-build-client after lstsp-update-sshkeys patch. Will let you know how it all goes.
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| 14:02 | <jp_> Hi Alkis
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| 14:04 | I have done all the steps related to the thin client for RaspberryPi-3 (which are basically the RaspberryPi-2 steps itself) in the RaspberryPi help page (https://help.ubuntu.com/community/UbuntuLTSP/RaspberryPi)
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| 14:04 | I have made the SD image also as listed in it.
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| 14:05 | Now when I boot up my Raspberry, I get an error : "Gave up waiting for root device. Common problems:" ....
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| 14:06 | And then : "ALERT! /dev/nbd0 does not exist. Dropping to a shell!"
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| 14:11 | And a little before that, I had also got an error message :
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| 14:12 | Begin: Mounting root file system ... Begin: Running /scripts/local-top ... Begin: Setting up nbd-client ... [ <some number> nbd: registered device at major 43
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| 14:13 | Negotiation: ..Error: Read failed: End of file
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| 14:13 | Exiting.
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| 14:13 | done.
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| 14:26 | Could anyone please help me understand what is going wrong ?
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| 15:40 | <jp_> Hi
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| 15:41 | <alkisg> !nbd-client
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| 15:41 | <ltsp> nbd-client: To try mounting the NBD image from the client initramfs: nbd-client 192.168.67.1 -N /opt/ltsp/i386 /dev/nbd0
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| 15:41 | <alkisg> jp_: try that ^ while putting the correct server ip, from the raspberry initramfs shell
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| 15:42 | <jp_> ok, let me try that ...
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| 15:43 | i guess, instead of /opt/ltsp/i386 I will need to use /opt/ltsp/armhf
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| 15:43 | Right ?
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| 15:43 | <alkisg> Right
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| 15:44 | <jp_> Btw, I do not find nbd-server.allow file either in "/etc/ltsp/nbd-server.allow"
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| 15:44 | Could that also be an issue ?
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| 15:45 | Or, is it that I need to create this file myself ?
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| 15:47 | <alkisg> No, that file should not exist
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| 15:49 | <jp_> After running nbd-client <server-ip> -N /opt/ltsp/armhf /dev/nbd0 I get an error :
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| 15:50 | Negotiation: ..Error: Read failed: End of file
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| 15:50 | Exiting.
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| 15:52 | <alkisg> And does it work with your i386 or amd64 configuration?
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| 15:52 | i.e. -N /opt/ltsp/amd64
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| 15:53 | <jp_> I have only 2 directories under /opt/ltsp : "armhf", and, "images"
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| 15:54 | <alkisg> And what's inside images?
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| 15:55 | <jp_> "amd64.img", and, "armhf.img"
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| 15:55 | <alkisg> ok, try nbd-client -N /opt/ltsp/amd64
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| 15:57 | <jp_> Still the same error
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| 15:58 | <alkisg> And yet an amd64 client can boot?
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| 15:58 | <nehemiah> We're coming to a point where everything seems to be working really well. I wanted to thank everybody for there advise and input! We are getting into the stage of making an automated installation the can easily replicate the setup.
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| 15:59 | <jp_> @alkisg : How do I test that ?
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| 15:59 | <nehemiah> There's just a couple more questions. Can I, for thin clients, downgrade the amount of colors displayed to make up a little for the network latency? Like you can with x2go?
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| 15:59 | <alkisg> jp_: have you booted any clients with this ltsp setup?
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| 16:00 | <jp_> No.
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| 16:00 | I am directly trying through my RaspberryPi-3
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| 16:01 | <alkisg> OK, this means that there may be more issues to be addressed server-side than just nbd-server
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| 16:01 | Unfortunately I don't have much time currently, I'll be available again a few hours, or tomorrow...
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| 16:01 | !lts.conf
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| 16:01 | <ltsp> lts.conf: (#1) http://manpages.ubuntu.com/lts.conf, or (#2) lts.conf manpage is available in the ltsp-docs package
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| 16:01 | <alkisg> nehemiah: check X_COLOR_DEPTH there, you can set it to 16
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| 16:03 | <jp_> Is there any way to check if my Raspberry client is able to connect to my Kubunto server and access /opt/ltsp/*
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| 16:22 | <markit> jp_: ehi, I use kubuntu too :) (not with raspberry though... I'm surprised it can work with it... any special fine tuning to reduce the I/O?)
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| 16:27 | <jp_> markit: I have still not been able to get it working even for once.
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| 16:32 | I have a desktop (Intel Core2 ; 4GB ram, running 64bit Kubuntu 16.04.3LTS) with a single NIC. I have my LTSP Server installed on this. And, I am trying to get a RaspberryPi-3 (want to use it as a dumb terminal, like in the earlier days, but with a running GUI).
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| 16:35 | So, just want to be able to work on my Desktop through the RaspberryPi-3
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| 16:37 | Is there any way I can test (maybe from within initramfs) that there is no access issue from RPi to the LTSP Server ? Something similar to a ping / ssh ?
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| 16:39 | Through a normal Rasbian SD on my RPi, I am able to ssh to my Kubuntu without any issue, though.
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| 16:56 | <alkisg> jp_: I have 3-4 minutes until some meeting, if you're here currently we can try this:
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| 16:56 | !vnc-edide
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| 16:56 | <ltsp> 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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| 17:43 | <jp_> alkisg: Oops, missed to catch you it seems ...
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| 19:44 | <lucascastro> !cheap-client
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| 19:44 | <ltsp> cheap-client: https://www.gearbest.com/tv-box-c_11262/nt1_windows~10/
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