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


Channel log from 16 April 2014   (all times are UTC)

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02:19
<urly>
hi I need help about ltsp-build-client option --dist or --pin-packages or --pin-dist. I need to downgrade kernel ubuntu 14.04 to ubuntu kernel 3.2 for a nonpae problem with the via nehemia CPU of my thin clients. I hope I don't need to much luck
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03:47
<urly>
I use ubuntu. Can I use a 14.04 server with 12.04 thin client
03:47
?
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04:53
<alkisg>
!learn non-pae as To allow non-pae thin clients to boot in Ubuntu 12.04+, one can install the debian 486 kernel in the chroot: https://packages.debian.org/wheezy/linux-image-3.2.0-4-486
04:53
<ltsp>
The operation succeeded.
04:53
<alkisg>
urly: see above ^
05:00
<urly>
hi! how to install this ?
05:02
<alkisg>
How to install a .deb package? Ask in #ubuntu...
05:02
Or just google and read the first hit...
05:03
<urly>
ok with .deb . then remove other kernels ? ltsp-updates-kernels ? & ?
05:05
<alkisg>
No need to remove other kernels, you can leave them. You'll need ltsp-update-image.
05:06
<urly>
ok. and with modules (especially sound modules) it will be ok with hardware support ? http://ubuntu.5.x6.nabble.com/PAE-server-with-no-PAE-thin-client-td5048837.html
05:07
<alkisg>
It should, it's the same kernel
05:08
<urly>
the same kernel than 14.04?
05:08
<alkisg>
No, as 12.04
05:08
The kernel in 14.04 is about the same as in jessie, the next version of debian
05:09
I don't know if it needs a newer initramfs version than the one found in 14.04 though, that's why I'm suggesting 3.2, I've tried it with 14.04 server and non-pae clients and it worked fine
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05:10
<urly>
initramfs deals with busybox and £££££££££££££££££ impossible boot ?
05:11
<alkisg>
Yes. But if you see that, then pae is NOT your problem
05:12
With the pae problem, you don't get to see busybox, it stops before that
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05:15
<urly>
yes but I passed the pae problem with 14.04 server and 12.04 generic pinned chroot.. but now £££££££££££££££££££££ busybox and must wake up to go to work
05:16
maybe later , thanks alkisg
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05:17
<alkisg>
np
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09:26
<alphabet>
Hello guys
09:35
<alkisg>
Hello
09:39
<alphabet>
i have an issue with ltsp googled the sh*t out of it cant seem to find any decent awnser. To be clear i have a Debain 7.4.0 with ltsp running on 25 thin clients running as kiosks. This all works perfectly the only issue i have is with some old pentium 4 machines who wil not boot into kiosk mode for some reason. the error it gives me is xf86OpenConsole: Cannot open virtual console 7 (Permission denied)
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10:01
<alkisg>
Put SCREEN_02=shell in lts.conf, reboot clients, run lspci -nn -k | grep -A 2 VGA, to see their graphics cards pci id
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10:04
<Ano>
Hello fellows !
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10:05
<alkisg>
Hello
10:05
<Ano>
I'm searching for tutorials to install LTSP, I have searched some of course but they are too old or unclear
10:06
<alkisg>
Which distribution are you interested in?
10:06
And, what kind of clients, thin or fat?
10:07
<Ano>
The distribution of the server is Debian 7 and I'm interested in Mint Debian as Os for the thin client.
10:08
<alkisg>
If it is a thin client, the client os doesn't matter
10:08
!fatclients
10:08
<ltsp>
fatclients: You may find some info about the Ubuntu/LTSP implementation of fat clients at https://help.ubuntu.com/community/UbuntuLTSP/FatClients
10:08
<alkisg>
Read the intro there to learn what an ltsp fat client is
10:08
For normal thin client ltsp, if you wanted mint for the clients, you'd install mint on the server
10:09
That's not the case for fat clients; there, you'd install mint in the chroot
10:12
<alphabet>
vga compatible controller [0300]: Intel corporation 82945G/GZ Integrated graphics controller [8086:2772] (rev 02) subsystem: Helwett-Packard company device [103c:3010] Kernel driver in use: i915
10:13
<Ano>
Ok, I have checked. So to reformulate : a thin client has all services on the server. A fat client has some services mounted on itself.
10:13
Is that right ?
10:13
<alkisg>
Ano: most services on itself. yes.
10:13
alphabet: is that the client, or the server? I.e. did you run that on the client shell screen?
10:14
<alphabet>
on the client shell
10:14
<alkisg>
That doesn't seem very old... so, `less /proc/cpuinfo` there says P4?
10:14
How much RAM?
10:14
`free`
10:15
<alphabet>
give me a second i need to switch from pc to pc
10:19
intel p4 2,8ghz
10:19
and 1gb of ram
10:20
<Ano>
!thinclients
10:20
<ltsp>
Error: "thinclients" is not a valid command.
10:20
<alkisg>
Ano: what are you client specs? RAM, CPU?
10:21
alphabet: try startx there on screen_02, does it start X?
10:21
<Ano>
I'm searching that at the moment
10:21
<alkisg>
alphabet: or, X -configure
10:21
<alphabet>
yes it does startx and xinit both work with iceweasel that is
10:22
<alkisg>
alphabet: and it only doesn't work when booted as a kiosk? and the rest of the clients boot fine? that's odd...
10:22
Put SCREEN_02=shell and SCREEN_07=kiosk etc etc, so that you have the usual boot process, AND a troubleshooting shell...
10:23
<alphabet>
yeah i find it odd myself too
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10:27
<alphabet>
yeah did that now
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10:30
<Ano>
Well I need the informations about my clients and to check the question of fat / thin clients with my superior. I'll came back after all of that.
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10:35
<alkisg>
Ano: if you can, go for fat clients. I.e. their specs should be good enough to run the OS locally. Then you just use the server as a network disk + authentication
10:39
<Ano>
I wanna chech that
10:40
<alphabet>
X -configure gives me: number of created screens does not match number of deteced devices configuration failed
10:41
server terminated with error (2)
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10:42
<alkisg>
alphabet: if you already have an X server running in screen_07, then you need to specify a different display
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10:43
<alphabet>
And how do i do that?
10:44
<alkisg>
You don't need to run X -configure now at all
10:44
Just check the logs to see why normal boot fails
10:44
Reboot the client first to get clean logs
10:51
<alphabet>
Did that is there anything specific you want me to pick out of the xorg.log?
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10:53
<alkisg>
Sorry I'm not trying to walk you through, I'm doing 5-6 things simultaneously, just pointing you to the right direction...
10:53
So you'll need to browse through the logs and try locate the error yourself...
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10:55
<alphabet>
Im sorry ill try to figure it out myself first
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10:58
<prem>
hi all
10:58
how to build ltsp server with --ltsp-cluster option
10:59
am not getting the option from debian
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11:00
<prem>
alkisg, hi you there
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11:10
<alphabet>
They only thing i can make out of it is Open ACPI failed (/var/run/acpid.socket) (No such file or directory) Don't know if its vital. And there is my earlier mentioned one xf86OpenConsole: Cannot open virtual console 7 (Permission denied)
11:10
<alkisg>
Hi prem, ltsp-cluster isn't really maintained, debian doesn't include it, and it'll probably be removed in ltsp 6...
11:11
alphabet: is the kiosk trying to run X as the user, instead of as root?
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11:16
<alphabet>
I have absolutely no idea. Wouldn't make sense as the "real thin clients" do boot normal
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11:17
<alkisg>
Maybe those are not using KMS? What graphics cards do they have?
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11:20
<alphabet>
via cn700
11:23
<prem>
alkisg, so is there any other option in ltsp to have a centralised management tool like that
11:23
<alkisg>
prem: I've no idea what tools ltsp-cluster had, I've never even seen it
11:24
<prem>
am looking for a good tool to manage the ltsp clients in the network., like adding new users, pxe configuration and monitoring the usage
11:24
<alkisg>
ltsp-cluster had utilities to add users?!
11:25
You shouldn't need any special pxe configuration except for extreme cases
11:25
And, monitoring tools are not specific to ltsp either
11:25
So I don't think the tools you're asking for are ltsp-related...
11:29
<alphabet>
VGA compatible controller [0300] S3 unichrome pro [1106:3344]
11:29
<alkisg>
alphabet: yeah I think that's not using KMS, so it might be the reason it's working without root
11:30
Try playing with `nomodeset` in pxelinux.cfg/default
11:30
But the real fix would be to fix the kiosk code to use root in all cases...
11:30
alphabet: to make sure, boot a client that works, and run `ps` from SCREEN_02, to see if X runs as root or not
11:31
<alphabet>
will do
11:38
X :7 vt7 depth runs as root on a working client
11:38
xinit and iceweasel runs as kioskuser
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12:04
<inpothet>
good day
12:04
i have a question
12:05
how can i set the kernel that the clients will recive
12:06
<alkisg>
Distribution/version?
12:07
<inpothet>
ltsp-5 edubuntu 12.04.4.4
12:07
<alkisg>
You install the kernel you want in the chroot
12:08
What is the exact problem?
12:08
<inpothet>
the clients i have are non pae but the 12.04 only comes with 32 bit pae kernel
12:08
so i need to set a other kernel but im new to the ltsp system
12:09
<alkisg>
Install the non-pae kernel that 12.04.1 has
12:09
sudo apt-get install linux-image-generic etc etc in the chroot
12:09
Now you have linux-image-generic-lts-backport-saucy or something...
12:09
I.e. the 12.04.4 kernel, which needs pae
12:10
<alphabet>
nomodeset dind't work for me
12:11
<inpothet>
can this be dont from the live disk because for some reason it wont boot after install so i can only run it from live eviroment
12:12
thanks i will try this when i get back to the server
12:13
i got notified at the last moment that he want to use ltsp because remote desktop was to laggy
12:16
alkisg does that get the kernel of the same arch or can i set it to get 32 bit
12:16
<alkisg>
In Ubuntu it needs to be the same arch
12:17
You can create a 32bit chroot once you've installed it
12:17
<inpothet>
ok
12:18
can i do this from live disk
12:18
<alkisg>
If you have many many GBs of RAM available... sure
12:18
<inpothet>
4 gb
12:19
<alkisg>
You could try it, dunno
12:19
It's surely harder than installing it to the disk
12:19
Or just boot with edubuntu 12.04.1 i386
12:19
So that you don't need to do anything
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12:20
<inpothet>
i tryed installing but its not working
12:20
it wont boot
12:22
can you mabey tell me how to make a cgroot
12:22
*chroot
12:22
<alkisg>
Download the edubuntu 12.04.1 i386 dvd and boot with that
12:22
That contains everything you need, the appropriate kernel and chroot etc
12:23
<inpothet>
ok
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12:23
<inpothet>
i will do that than but it is anoying that i need to run it from cd the hole time
12:23
thanks for you help
12:24
<alkisg>
inpothet: it shouldn't be hard to install it to the disk
12:24
Ask in #edubuntu to solve the boot problems
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12:24
<alphabet>
alkisg where do i change that kiosk code to run as root
12:24
<inpothet>
i did
12:25
<alkisg>
alphabet: in /usr/share/ltsp/*, but I can't walk you through that, it would require _me_ looking at the kiosk code... :)
12:27
<inpothet>
alkisg : i can only find 12.04.2 does that work to ?
12:27
<alkisg>
No
12:27
<inpothet>
scrap that i found it
12:27
<alkisg>
http://old-releases.ubuntu.com/releases/edubuntu/releases/12.04/release/
12:27
<inpothet>
thanks
12:28
can i download 64 bit to or does that contain pae?
12:29
<alkisg>
Download the i386 on
12:29
one
12:29
<inpothet>
ok thanks
12:30
your the best help i found
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12:55
<nick__>
Hello there!
12:58
<alphabet>
alskisg thanks for your help if it doesn't work out for me ill check back here again thank you!
12:59
<nick__>
I cant print from thin client parallel printer any hints?
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13:37
<nick__>
any help
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13:47
<alkisg>
!ask
13:47
<ltsp>
ask: Don't ask to ask a question, simply ask it, and if someone knows the answer, they'll respond. Please hang around for at least a full hour after asking a question, as not everybody constantly monitors the channel.
13:47
<nick2_>
Back again. I've assigned clients mac to lts.conf and given clients ip to printer configuration. Printing ok from server through lpt though
13:49
<alkisg>
What's your lts.conf like?
13:49
!pastebin
13:49
<ltsp>
pastebin: 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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13:50
<Ano>
Halo again
13:51
<nick2_>
http://pastebin.com/Be34YQrp
13:51
<Ano>
I'm searching help to install thin clients with i386 on a amd64 server
13:52
Help about how to do and what is possible to do or not
13:53
<alkisg>
Ano: ltsp-build-client --arch i386. But you usually don't need to do that, just install an i386 cd on your server.
13:55
<Ano>
Yes but I have other services on this server and I would let it in 64x
13:56
<alkisg>
OK, then use the command I wrote
13:56
<Ano>
Ok
13:58
<alkisg>
nick2_: did you try with only PRINTER_0_DEVICE in lts.conf?
13:58
nick2_: also, don't use 2 times the same [mac:address]
13:58
in that case, only the second one takes effect
13:59
<Ano>
Then; how do I do to build ltsp client whitout using internet mirror ?
14:00
<nick2_>
Ok, let my try that
14:03
my=me
14:08
<||cw>
Ano: mount the cd and use --mirror file://cdrompath/{something}
14:08
I haven't tested that though
14:09
and {something} is a cdrom path that depends on the distro/version you have
14:10
<Ano>
ok, is it possible to do that with a .iso ?
14:10
<||cw>
mount isofilename /cdrom -o loop
14:10
<Ano>
(it has to be mounted ok
14:12
<||cw>
if you have an apt/sources.list file with the cdrom source in it, whatever path that has is what you'd use
14:13
<Ano>
all right
14:14
<alkisg>
Adding a cd doesn't also select the target architecture... it just saves a bit of bandwidth (after you've downloaded the second cd...) so you'd need --arch i386 again
14:14
<nick2_>
still nothing any ideas
14:14
<alkisg>
Do you have the /dev/lp device on the client?
14:14
<Ano>
Yes those questions are asked to buil my ltsp-buil-client command =)
14:16
Is it during the installation that I chose the desktop and programs of the client ?
14:16
<alkisg>
Ano: you've decided to use thin clients, not fat clients, right?
14:17
<nick2_>
How can i check that?
14:17
<alkisg>
!screen_02
14:17
<ltsp>
screen_02: To get a root shell on an Ubuntu thin client: https://help.ubuntu.com/community/UbuntuLTSP/ClientTroubleshooting#Using_a_shell_SCREEN
14:19
<Ano>
Yes alkisg my clients do not have hard disk drive, they do not look like they could support fat config
14:19
<alkisg>
Ano: fat clients don't need a hard drive
14:20
Tell us their specs like I asked you... RAM and CPU
14:22
<Ano>
CPU very weak / ram 256 or 512 mega
14:22
<alkisg>
OK, thin clients then
14:23
<Ano>
I can't be more pecise sorry
14:23
<alkisg>
So, the desktop of your clients is whatever you install on your server
14:23
<||cw>
Ano: as long as the flient is capable of working with a livecd, it'll "work" as a fat client. and actually it can still work even if it doens't have enough ram to run the livecd. but whether or not it's suitable depends on what applications you want to run
14:23
<alkisg>
i.e. when you install your server, not when you run ltsp-build-client
14:25
<Ano>
ok if it is a thin client it will use the exact system I have on my principal server
14:27
||cw do you mean a live cd introduced in the client ?
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14:32
<||cw>
yes
14:33
<nick2_>
dev/lp0 is there
14:33
<alkisg>
What's the output of `ps aux|grep jetpipe` ?
14:34
<Ano>
Ok because I have no cd player on my client, so definitively thin client ?
14:36
<||cw>
Ano: usb boot? though if it's not a dual core cpu then thin client is almost certainly better
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14:37
<||cw>
I haven't booted linux from an actual cd/dvd in probably 3 years
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14:38
<nick2_>
Alkisg: 24359 0.0 0.0 4400 812 pts/4 S+ 17:34 0:00 grep --color=auto jetpipe
14:38
<alkisg>
Then jetpipe is not running
14:39
(jetpipe is the daemon managing the printer)
14:40
<Ano>
Yes I asked myself the question ||cw, however; clients need huge work to allow usb boot it's not possible consequently.
14:43
I have to adapt my work to the material I have. I know it's impossible to have the best LTSP configuration possible.
14:48
How does it work to install a programm for the client ?
14:48
<nick2_>
Alkisg: but then how my network printers work ok? or did i screw up somewhere?
14:49
<alkisg>
nick2_: network printers are accessed through the server cups, while client printers on thin clients through jetpipe
14:49
Different things
14:50
There was a bug about jetpipe not starting, check that you have all updates...
14:57
<nick2_>
Is this ok : 2174 0.0 0.1 4400 792 tty2 s
15:15
<Ano>
Thanks for your help today.
15:15
I wanna continue to work and come back to speak about the point I do not succeed to understant
15:15
Good bye
15:15
support rather than help by the way
15:31
<alkisg>
Ano: it's like remote desktop
15:32
The clients are dumb devices that just connect to the server and run whatever programs the server has
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15:37
<Ano>
Ok
15:40
I found a how-to that tells to install a dns server on the ltsp server. Is is imperative to do so ?
15:42
<alkisg>
No
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15:44
<Ano>
Ok I think you gave me all what I need to make a real install tomorow
15:44
thanks
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15:45
<alkisg>
Ano: if you want to follow my advice, first thing tomorrow is to come with your exact client specs
15:45
And server/network specs too
15:45
E.g. the best route might be to buy ram for the clients... or some other option... it depends
15:47
<Ano>
I know those informations are very important to have good advice, I have everything about the server. I'll do my best for the clients but my only solution is to open it.
15:49
I'll find solutions for that, I need to have the minimal configuration because the only means into the budget is to buy more ram for the server may be. Depends of the price.
15:49
<alkisg>
What are the server/network specs?
15:49
<Ano>
old
15:50
proc : intel pentium D 3ghz, for the moment 1gb ram could upgrade to 8gb
15:50
<alkisg>
That's not an appropriate server for thin clients.
15:50
How many clients?
15:50
<Ano>
4 or 5
15:50
<alkisg>
Gigabit network or not?
15:51
<Ano>
not the server interface
15:51
<alkisg>
Check the client specs, if they're P4's you can put some RAM into them and use them as fat clients
15:51
Otherwise it's not worth it, the server is very old
15:52
<Ano>
I'll speak with my boss about that.
15:52
I really have to go, thanks for the support
15:52
<alkisg>
bb
15:52
<Ano>
see you tomorow
15:52
bb ?
15:52
<alkisg>
"bye bye"
15:52
<Ano>
bed and breakfast ?
15:52
<alkisg>
Sure :)
15:53
<Ano>
^^
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15:55
<nick2_>
Thanks for the help alkisg you lead me to the solution, i just tried a network parallel print server i had my eye on for sometime nowand it works just fine.
15:55
<alkisg>
np
16:00
<nick2_>
quit
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17:38
<Chap_>
How can I verify tftpd is working correctly in new Ubuntus? I'm getting a timeout, and want to make sure the server is up before diving into iptables
17:38
<alkisg>
!tftp
17:38
<ltsp>
tftp: Here's a page to help you troubleshoot TFTP problems in Ubuntu: https://help.ubuntu.com/community/UbuntuLTSP/Troubleshooting/TFTP
17:39
<Chap_>
Thanks alkisg Page says applicable only up to 10.10
17:39
<alkisg>
It should say "tested only there"
17:39
It's up to you to test it in 14.04 and write it in that page if it still works
17:40
<Chap_>
heh OK dig thanks
17:47
Oh krikey we're using dnsmasq b/c ltsp inside a VM. I don't think that page will help me.
17:47
FUN
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19:39
<gbaman>
having a weird issue with Raspberry Pis and LTSP, getting this when they boot. They perfectly happily boot, just sit for 30 seconds before doing so https://dl.dropboxusercontent.com/u/1122948/temp/LTPS-refused.jpeg
19:39
then hits a Error: Socket failed: Connection refused
19:40
and happily moves on
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20:00
<alkisg>
gbaman: that's probably the clients requesting nbd swap from the server, and the server not answering (not configured for swap)
20:01
<gbaman>
they are NFS clients
20:01
we never did actually get round to testing NBD with the pi
20:02
<alkisg>
gbaman: debian uses NFS by default for the root file system, *and* NBD for swap
20:02
Try putting this in lts.conf: NBD_SWAP=False
20:02
<gbaman>
what will it use for swap then?
20:02
<alkisg>
Nothing, or a local swap partition
20:02
It appears that now you haven't configured nbd swap
20:03
<gbaman>
keeping in mind the oldest pis only have 256mb of ram :
20:03
:)
20:03
so NFS swap might be a good idea?
20:03
<alkisg>
I'm not suggesting that you should disable swap forever
20:03
Just to verify that you currently have not configured nbd swap
20:03
<gbaman>
ok, will do for test
20:03
<alkisg>
And that this is indeed your issue
20:04
Then, just run `ltsp-config swap` to configure nbd swap...
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20:05
<Hello_>
Hi :) do you think an inbuilt laptop webcam can work in a thin client?
20:06
<gbaman>
na alkisg, it is still sitting there
20:06
<alkisg>
gbaman: you still see the connection refused message?
20:06
<gbaman>
to clarify, /var/lib/tftpboot/ltsp/armhf/lts.conf
20:06
yes
20:07
the config file
20:07
http://pastebin.com/heDZPJfR
20:07
does it need to be indented?
20:07
<alkisg>
No, are you use it's read from there?
20:07
Try `getltscfg -a` once it boots...
20:07
Hello_: yes, if you use localapps or fat clients
20:08
<Hello_>
Nicee
20:09
<alkisg>
gbaman: the 30 seconds delay is usually (1) by a wrong entry at /etc/network/interfaces, (2) by a DNS timeout, or (3) a wrong fstab entry
20:09
<gbaman>
waiting for client, one sec
20:09
btw, Raspi-LTSP got a new logon screen :) https://dl.dropboxusercontent.com/u/1122948/temp/Starspi.jpg
20:10
ok, command run
20:10
no mention of nfs
20:10
so there is another one..
20:11
<alkisg>
Haha nice logo
20:11
<gbaman>
Raspberry Pi logo
20:12
ok, there is another lts.conf inside the armhf image
20:12
<Hello_>
Fat client is ace, only thing is, i want to stop them being able to unplug the network cable and plug the internet in, would i have to build that into the distro config
20:12
<gbaman>
ok, yes that was the one
20:12
rebooting now
20:13
why is there 2 lts.conf files??
20:13
<alkisg>
You've probably built 2 chroots for some reason...
20:13
<gbaman>
one in tftpboot
20:13
and one in the chroot
20:14
<alkisg>
vagrantc likes to use the one in the chroot for NFS
20:14
ubuntu used nbd, so it couldn't use the chroot one, and moved it to tftp
20:14
Me, I want to put it in /etc/ltsp/config.d on the server :P
20:15
<gbaman>
well it still sat for just as long :)
20:15
but no "connection refused"
20:15
<alkisg>
OK, so that was indeed nbd swap
20:15
Now, to the delay
20:16
Check /etc/network/interfaces and /etc/fstab in the booted client
20:16
Paste them to pastebin...
20:22
<gbaman>
alkisg: http://pastebin.com/vZMQHL7f
20:24
<alkisg>
They seem fine, so I can only think it's DNS related
20:24
Either forward (client to server), or reverse (server can't do reverse dns on the client IP)
20:25
<gbaman>
best way to test?
20:26
am guessing setting server to use 8.8.8.8 isnt going to help
20:26
<alkisg>
Declare the client IPs in /etc/hosts on the server. There's some Debian.readme somewhere I think... google about ltsp reverse dns , you should find the info...
20:26* alkisg waves
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23:15
<hermitcl>
Hi all - does anyone know where window text (window title, drop-down menus inside the windows, etc) is controlled? I'm administering an 8 client network where all but 2 of the terminals have scrambled window text. Centos 6, XFCE4
23:18
<Hyperbyte>
Hi! This sounds like a #centos question
23:18
Or #xfce... LTSP just manages the network boot bit. The rest is just your distro at work.
23:18
<hermitcl>
okay - thanks Hyperbyte