IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 6 April 2017 (all times are UTC)
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| 07:45 | <Nick2017> Καήμερα ήθελα να κάνω 2-3
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| 07:45 | ερωτήσεις για UBUNTU LTSP
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| 08:05 | <alkisg> Nick2017: καλημέρα
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| 08:06 | Αυτό είναι το αγγλικό κανάλι
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| 08:06 | Γράψε αυτό για να έρθεις στο ελληνικό: /join #ts.sch.gr
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| 12:42 | <professor^profes> hello
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| 17:26 | <facilitador> help
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| 17:27 | i can't see two users
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| 17:28 | exit
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| 17:35 | <xxstormxx> hi everyone
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| 17:35 | anybody willing to help a bit i am kind of lost over here
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| 17:36 | <alkisg> xxstormxx: hi
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| 17:36 | Where do you need help?
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| 17:36 | <xxstormxx> well, first, thanks for answering
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| 17:36 | i have set up an LTSP server on a virtualbox host
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| 17:36 | i have built the image
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| 17:37 | no problems
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| 17:37 | Using LXDE as GUI
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| 17:37 | <alkisg> Which distro/version?
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| 17:37 | <xxstormxx> 16.04
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| 17:37 | <alkisg> ok
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| 17:38 | <xxstormxx> the client boots up and seems to work.. but it quite simply hangs at boot and the image is broken
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| 17:38 | the login screen display is like doubled with violet shades and so on
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| 17:38 | and it hangs
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| 17:39 | i am using arch linux as O/S on my PC
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| 17:40 | <alkisg> !lts.conf
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| 17:40 | <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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| 17:40 | <alkisg> sudo nano /var/lib/tftpboot/ltsp/i386/lts.conf
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| 17:40 | [Default]
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| 17:40 | X_SMART_COLOR_DEPTH=False
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| 17:40 | Try this ^
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| 17:40 | It might be a kernel issue with 16 bit color depth
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| 17:41 | <xxstormxx> do you have a moment? i will try right away
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| 17:42 | i have to update the image as well right? ltsp-update-image
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| 17:42 | <alkisg> No, just reboot client
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| 17:43 | <xxstormxx> okay rebooting
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| 17:44 | same issue
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| 17:44 | one moment i will show you
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| 17:44 | <alkisg> Is the client a VM too?
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| 17:44 | <xxstormxx> https://ibb.co/n7rObF
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| 17:44 | yes
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| 17:45 | <alkisg> Put your lts.conf to pastebin
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| 17:45 | It seems like your client doesn't get the lts.conf settings
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| 17:45 | <xxstormxx> which one? the same you gave me?
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| 17:45 | i mean the same file you have addressed me previously?
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| 17:46 | <alkisg> cat /var/lib/tftpboot/ltsp/i386/lts.conf
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| 17:46 | The output of that
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| 17:46 | See this image: https://launchpadlibrarian.net/311563710/VirtualBox_Thin_20_03_2017_10_32_51.png
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| 17:46 | <xxstormxx> i have used amd64 as arch
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| 17:46 | <alkisg> And this bug report: https://bugs.freedesktop.org/show_bug.cgi?id=100295
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| 17:47 | I think that's the issue you're having, I reported it and they solved it already (in the modesetting driver)
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| 17:47 | And that now your client just doesn't read the lts.conf
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| 17:47 | So paste your lts.conf, it might have a syntax error somewhere
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| 17:47 | !screen_02
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| 17:47 | <ltsp> screen_02: To get a root shell on an Ubuntu thin client: https://help.ubuntu.com/community/UbuntuLTSP/ClientTroubleshooting#Using_a_shell_SCREEN
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| 17:48 | <alkisg> Or get a root shell on the client and try `getltscfg -a` to verify it
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| 17:49 | <xxstormxx> okay i will do it right away
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| 17:49 | thanks mate
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| 17:49 | stand by please
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| 17:49 | <alkisg> xxstormxx: try this in that file:
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| 17:49 | [Default]
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| 17:49 | SCREEN_07=shell
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| 17:49 | So, if the client reads lts.conf, you will only get a shell with no xorg at all
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| 17:49 | If you get the corrupted screen, then I'm right in that it doesn't read your lts.conf
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| 17:50 | <xxstormxx> resetting
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| 17:50 | a moment
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| 17:51 | okay there is a console but it's frozen
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| 17:51 | started update UTMP about system runlevel changes
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| 17:51 | <alkisg> So so got no xorg now?
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| 17:51 | <xxstormxx> that's where it hangs
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| 17:51 | you are correct
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| 17:52 | no xorg
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| 17:52 | <alkisg> OK then it's a different issue from what I was saying
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| 17:52 | <xxstormxx> okay
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| 17:52 | <alkisg> Can I see?
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| 17:52 | !vnc-dide
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| 17:52 | <ltsp> vnc-dide: To share your screen with me, run this: sudo apt-get --yes install x11vnc; x11vnc -connect srv1-dide.ioa.sch.gr - this is a reverse connection, it doesn't need port forwarding etc.
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| 17:52 | <alkisg> Can you do that on your arch?
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| 17:52 | (it sounds like a weird one, that's why it would take less time with vnc..)
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| 17:53 | Or, on your ltsp server vm
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| 17:53 | <xxstormxx> sure
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| 17:53 | that i can do
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| 17:53 | <alkisg> But that way I won't see the client screen, it'll be a bit worse
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| 17:53 | <xxstormxx> but i am behind like 2 firewalls one of which i have no access
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| 17:54 | <alkisg> Try it and if it works, ok :)
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| 17:54 | If it doesn't, we'll think of something else
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| 17:55 | Btw, do you know about the ltsp-pnp method?
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| 17:55 | !ltsp-pnp
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| 17:55 | <ltsp> 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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| 17:56 | <xxstormxx> cool
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| 17:57 | thanks mate
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| 17:57 | <alkisg> xxstormxx: yeah you had just misttyped the X_SMART_COLOR_DEPTH
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| 17:57 | <xxstormxx> that was it???
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| 17:57 | <alkisg> xxstormxx: but, I propose to use ltsp-pnp instead
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| 17:57 | (unless you have a reason not to)
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| 17:57 | <xxstormxx> @alkisg why ltsp-pnp
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| 17:57 | how do i PM you?
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| 17:58 | xD
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| 17:58 | <alkisg> How many clients are you planning to have, and what CPU/RAM will they have?
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| 17:58 | (I sent you a PM, you should see it in some other tab)
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| 17:59 | <xxstormxx> up to 5 thinclients
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| 17:59 | <alkisg> What CPU/RAM?
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| 17:59 | <xxstormxx> mmm unknown at the moment
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| 17:59 | <alkisg> New clients?
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| 17:59 | Then just buy fat clients and use ltsp-pnp
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| 17:59 | <xxstormxx> most definitely not
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| 17:59 | they might be 4 or 5 years old
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| 17:59 | <alkisg> That's fine too
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| 18:00 | <xxstormxx> i guess so as well
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| 18:00 | <alkisg> Anything with 1 GB RAM should be booted as a fat client :)
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| 18:00 | Are you going to do browsing etc on them?
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| 18:00 | <xxstormxx> i have seen them working with multipoint 2011
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| 18:00 | tell me, why ltsp-pnp ?
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| 18:00 | <alkisg> First, why fat clients:
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| 18:00 | !fatclients
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| 18:00 | <ltsp> fatclients: Nowadays LTSP supports thin and fat clients. They are both diskless and netbooted from the same LTSP chroot, but while thin clients run the session on the server and transfer the screen, fat clients run the session locally with their own CPU/RAM, thus performing amazingly better. See also !ltsp-pnp and https://help.ubuntu.com/community/UbuntuLTSP/FatClients
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| 18:00 | <alkisg> !thin-clients-bandwidth
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| 18:00 | <ltsp> thin-clients-bandwidth: A small explanation why thin clients can't perform well with video, lots of screen updates etc: https://sourceforge.net/p/ltsp/mailman/message/35694699/
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| 18:00 | <alkisg> And once you read those, here's why ltsp-pnp:
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| 18:00 | !ltsp-pnp
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| 18:00 | <ltsp> 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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| 18:01 | <alkisg> (I wrote all those 3 links, so just read them :))
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| 18:01 | <xxstormxx> i will do some RTFM thanks :)
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| 18:02 | well, they just need to browse the internet and print...
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| 18:02 | they don't have to do much with them
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| 18:03 | <alkisg> Browsing the internet nowadays is the hardest thing a pc needs to do :)
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| 18:03 | <xxstormxx> lol... i thought it was gaming..
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| 18:03 | <alkisg> It usually involves > 1 GB RAM usage and 50% CPU etc
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| 18:04 | Gaming in linux? nah...
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| 18:04 | <xxstormxx> well, the actual situation they have is a really fat dell server with Windows multipoint 2011
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| 18:04 | and 5 wise thin clients
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| 18:04 | if the multipoint could run them smoothly... i don't see why LTSP wouldn't
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| 18:05 | <alkisg> Sure, install ltsp-pnp and if you want thin clients, just set LTSP_FATCLIENT=False in lts.conf
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| 18:05 | LTSP doesn't have remote_fx
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| 18:05 | Read the second link
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| 18:05 | (09:00:40 μμ) ltsp: thin-clients-bandwidth: A small explanation why thin clients can't perform well with video, lots of screen updates etc: https://sourceforge.net/p/ltsp/mailman/message/35694699/
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| 18:06 | It does have fat client support though, which is a lot better
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| 18:07 | <xxstormxx> okay i see that
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| 18:07 | ah another question
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| 18:07 | how do they manage the network?
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| 18:07 | i mean
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| 18:07 | i am behind a captive portal
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| 18:07 | does the thin client has its own mac and IP?
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| 18:08 | and it authenticates against the CP with them or does it do that with the LTSP server Ip address?
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| 18:08 | <alkisg> Fat clients yes, thin clients no
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| 18:08 | Thin client sessions are on the server
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| 18:09 | Like logging in with multiple users on the same server
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| 18:09 | So whatever the clients do from there, will have the same mac/ip as the server
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| 18:09 | <xxstormxx> i understand
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| 18:09 | fat clients instead won't do that
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| 18:09 | <alkisg> Right
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| 18:10 | * alkisg needs to go now, later... | |
| 18:10 | <alkisg> Good luck!
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| 18:10 | <xxstormxx> okay
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| 18:10 | thanks mate
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| 18:10 | <alkisg> np
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| 18:10 | <xxstormxx> peace
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| 18:10 | going as well
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| 18:10 | bye
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