IRC chat logs for #ltsp on irc.freenode.net (webchat)


Channel log from 26 November 2014   (all times are UTC)

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01:29
<tkii>
is anyone familiar with raspi-ltsp?
01:35
or berryterminal?
01:37
<vagrantc>
!raspberrypi
01:37
<ltsp`>
raspberrypi: (#1) LTSP with raspberry pi: http://cascadia.debian.net/trenza/Documentation/raspberrypi-ltsp-howto/, or (#2) To use a similar environment to LTSP on the raspberry pi http://berryterminal.com/, or (#3) https://github.com/gbaman/RaspberryPi-LTSP, or (#4) https://pi-ltsp.net
01:38
<vagrantc>
other the the document i wrote, i'm not too familiar with the other options
01:47
<tkii>
I have raspi-ltsp working, berryterminal no matter how i format the card (fat16, fat32, lba, lvm, etc) will not boot. However is there a way to turn raspi-ltsp into a thin client instead of a fat client?
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01:48
<vagrantc>
i don't know raspi-ltsp
01:48
but if it's build sanely, there's no technical reason it couldn't ...
01:49
<tkii>
truly berryterminal would work better, it's a true thin client. I'm still learning the LTSP world so i'm quite fuzzy on a few things.
01:50
it's just i've only had it boot once, as soon as i edit the cmdline.txt file by adding server=x.x.x.x the card won't boot.
01:51
<vagrantc>
if raspi-ltsp is the same as pi-ltsp.net ...
01:51
<tkii>
same proj
01:51
<vagrantc>
then you'd just need to set LTSP_FATCLIENT=false and make sure to install ldm-server on the server
01:51
in lts.conf
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01:52
<tkii>
:) that was my next question after scanning your #1 article... ldm-server is installed.
01:54
<vagrantc>
though just yesterday i was toying with the rpi and couldn't get new firmware to boot anything but u-boot ... and i think u-boot wasn't initializing the devices properly
01:54
got all sorts of problems with mmc and usb devices
01:57
<tkii>
that's it, just update the image after changing the lts.conf?
01:58
that just seems too easy
02:15
<vagrantc>
you shouldn't need to update the image if you put lts.conf in the tftp dir
02:15
sudo ltsp-config lts.conf
02:15
should create one for you
02:25
<tkii>
ahh ... yeah just read that. still would like to get berryterminal to boot because it just bugs me that it won't. looks like he last updated his code in dec 2013 and his page sept 2014. guess there isn't much a reason too with pi's until they really change the hardware.
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05:21
<ame>
hi i do have have a doubt in running local appa
05:21
hi i do have have a doubt in running local apps
05:22
As i have installed firefox and arduino from the location chroot /opt/ltsp/amd64 and i did editing in lts.conf as local_apps=true
05:23
But i cannot open my application in client computer?Any ideas??
05:24
I also update the image and rebooted the client
05:25
<vagrantc>
ame: how did you try to open the application?
05:27
i'd recommend running ltsp-localapps xterm
05:27
and seeing if you can run your application from there, or if it is even present
05:27
<ame>
where should i do this??
05:27
In server or client?/
05:29
I just want my clients to run the application by typing the application name in terminal...
05:31
<vagrantc>
are you running thin or fat clients?
05:32
<ame>
both
05:33
am having thin clients and also fat clients
05:33
<vagrantc>
and what happens when you type the command from a fat client?
05:33
<ame>
Its eating lot of memory from my server as i am having only 8GB
05:33
what command??
05:33
<vagrantc>
the command you want to run?
05:34
<ame>
its showing that the applications is not installed
05:34
<vagrantc>
you've been a bit vague, so it's hard to actually help
05:34
how did you install the application?
05:34
"21:22 < ame> As i have installed firefox and arduino from the location chroot /opt/ltsp/amd64 and i did editing in lts.conf as local_apps=true"
05:34
<ame>
chroot /opt/ltsp/amd64 and just gave command as apt-get install arduino
05:36
<vagrantc>
on the server: ltsp-chroot dpkg -l arduino
05:36
from a fat client: dpkg -l arduino
05:36
should see the same information ... if not, your image didn't get updated.
05:37
<ame>
Desired=Unknown/Install/Remove/Purge/Hold | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad) ||/ Name Version Description +++-==============-==============-============================================ iU arduino 1:1.0+dfsg-9 AVR development board IDE and built-in libra
05:37
<vagrantc>
it failed to install completely
05:37
or, rather, it's partially installed
05:38
<ame>
oh sorry but i install in the exact location right??
05:38
<vagrantc>
?
05:39
<ame>
chroot /opt/ltsp/amd64 is the exact location for installing application to run locally right??
05:39
<vagrantc>
if your clients are amd64, sure, that's the default on an amd64 server.
05:40
ame: i'd recommend using ltsp-chroot, though.
05:40
ame: try: ltsp-chroot apt-get -f install
05:41
it should either finish installing the arduino package, or give you errors about failing to install arduino
05:41
<ame>
yes its showing errors
05:42
i will clear it
05:42
and i have one more doubt regarding RAM
05:43
my server is having 8GB RAM and i have 10 clients like 8 as normal computer with 2GB RAM and 2 as Thin clients with 512 MB RAm
05:43
<vagrantc>
you might want to use "ltsp-chroot -m apt-get -f install" ... that mounts a few additional filesystems (/proc/, /sys/) that some programs need to install successfully.
05:43
<ame>
hwo can i reduce the RAM consumption from my server
05:43
<vagrantc>
depending on what you're running, that should be fine
05:43
fat clients take very little server resources
05:44
<ame>
Wow its installed now by using -m
05:44
<vagrantc>
once you get everything installed, rebuild the image and try again
05:44
<ame>
If i ask all client to run application locally will my server ok
05:45
<vagrantc>
if you're talking 8 fat clients and 2 thin clients, you should be fine.
05:45
fat clients essentially run everything locally
05:46
the thin clients don't sound like they have much ram, though, so you'll probably need to run as much as you can on the server.
05:46
<ame>
From where did this thin clients run applications??
05:46
<vagrantc>
but it really depends on what you're doing...
05:46
<ame>
ok
05:46
<vagrantc>
thin clients run applications on the server, and display them to the client
05:47
<ame>
oh
05:48
<vagrantc>
LOCAL_APPS allows you to run some applications on the client itself, but it's more complicated than running everything locally, if you have the client hardware (2G of ram should be good)
05:48
i'm guessing the arduino application may need access to the arduino board directly?
05:49
in that case, you may need to run it on the thin clients too.
05:50
<ame>
Yes i have 2GB of RAM in all clients except those two thin clients
05:51
And i have fully installed the arduino and updated the image...
05:51
And also i rebooted the client but still i cannot open arduino and its saying please install the application
05:51
<vagrantc>
so you should be able to access it on the fat clients, and on the thin clients, you can run "ltsp-localapps arduino" if it's a GUI program
05:52
if it's not a GUI program, you'll need to run: ltsp-localapps xterm
05:52
and run arduino in the xterm
05:53
ame: what's saying "please install the application" ?
05:53work_alkisg is now known as alkisg
05:53
<ame>
yes its opening if i give ltsp-localapps arduino
05:54
How can i make it run by just giving arduino
05:54
<vagrantc>
you write a wrapper script that runs "ltsp-localapps arduino" and put it in the user's PATH
05:55
<ame>
I dont aware of wrapper script can u please give me an example?
05:56
<vagrantc>
echo '#!/bin/sh' >> arduino
05:56
echo 'ltsp-localapps ardunio' >> arduino
05:56
chmod +x arduino
05:57
mv arduino /usr/local/bin/
05:57
<ame>
should i give this command in chroot?/
05:57
<vagrantc>
no
05:58
the thin client logs into the server, so nearly everything is as if you were sitting at the server's monitor/keyboard/mouse
05:58
<ame>
Need to update the image again after gave wrapper script
05:58
??
05:59
<vagrantc>
no, only if you modify files in /opt/ltsp/amd64
05:59
<ame>
ok
05:59
let me try now
06:02
now if i type arduino in client system its simply not opening anything
06:03
but before it says to install the application
06:19
<vagrantc>
ame: does it work if you type: ltsp-localapps arduino
06:21
<ame>
yes
06:24
its opening now
06:25
thank you so much
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10:05
<metaf5>
Does anybody have any suggestions for managing a client image 'live'? For instance, I'm trying to customize a client image, and I need to install plugins in eclipse or firefox, and there may be no easy way to do this just being chrooted into the ltsp client image directory.
10:07
So is there any way to run the client in a way where I can get a GUI, and be able to make changes which modify the client image?
10:09
<alkisg>
!ltsp-pnp | echo metaf5:
10:09
<ltsp`>
metaf5: ltsp-pnp: ltsp-pnp is an alternative (upstream) method to maintain LTSP installations for thin and fat clients that doesn't involve chroots: https://help.ubuntu.com/community/UbuntuLTSP/ltsp-pnp
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10:19
<metaf5>
Thanks! I think that's probably what I need. Would there be any tricks to starting from the image I already have (if anything is on the top of your head)? Or could I just copy the old image contents into a VM, make changes, and then do ltsp-pnp on that to get my new image?
10:19
<alkisg>
sudo mv /opt/ltsp /opt/ltsp-without-pnp
10:20
...and then continue by installing ltsp-client etc etc as per the wiki page says
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10:22
<metaf5>
thanks
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10:33
<minetreu>
morno
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11:35
<minetreu>
switch user is still a problem?
11:51
<alkisg>
We don't have problems with switching users...
11:51
:)
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11:57
<minetreu>
wow :)
12:00
my clients could not, by that i mean, the switch is offered, but it only blacks out the screen, and falls back to password dialog of the current user
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13:27
<alkisg>
minetreu: ltsp uses ldm, not lightdm, so it doesn't have the switch account feature of lightdm
13:27
You'll be able to use lightdm with ltsp in version 6
13:38
<minetreu>
mmh, i did not see how to solve my problems. arent you using lightdm or gdm?
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13:57
<alkisg>
ldm
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14:17
<minetreu>
i have several processes lightdm on the server side -- could you be more specific -- i need some more clarification
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15:44
<minetreu>
!ltsp6
15:44
<ltsp`>
ltsp6: See: !future
15:44
<minetreu>
!future
15:44
<ltsp`>
future: Some of the highlights include working towards obsoleting LDM (using libpam-sshauth/libnss-sshsock), moving stuff out of ltsp-build-client into initramfs run-time modifications, and making it possible to maintain the chroot from a booted environment
15:53
<minetreu>
!s450
15:53
<ltsp`>
I do not know about 's450', but I do know about these similar topics: 'suse', 'sis', 's'
15:53
<minetreu>
!sis
15:53
<ltsp`>
sis: To bypass this problem with recent sis/xorg: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-sis/+bug/1066464, set this in lts.conf: X_OPTION_01="\"NoAccel"\"
15:54
<minetreu>
!xrandr
15:54
<ltsp`>
Error: "xrandr" is not a valid command.
15:54
<minetreu>
!x!xorgrandr
15:54
<ltsp`>
Error: "x!xorgrandr" is not a valid command.
15:54
<minetreu>
!xorg
15:54
<ltsp`>
I do not know about 'xorg', but I do know about these similar topics: 'x2go'
15:54
<minetreu>
!x2go
15:54
<ltsp`>
x2go: x2go is an NX-based suite of applications that allow logging in to a remote X server from any OS. It's much more efficient than VNC over slow network. More info: http://www.x2go.org/
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19:16
<tkii>
using berryterminal i get to the LTSP login screen, i login and just get a black screen with the X11 X mouse cursor.
19:17
i'm sure i've done something wrong... i do have lxde and ldm-server installed.
19:18
I have also changed the lts.conf with LDM_SESSION=/usr/bin/startlxde
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