IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 21 December 2018 (all times are UTC)
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| 15:22 | <josefig> good morning, something weird happened with the account of one of my ltsp clients
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| 15:22 | when he logs in the pc is not giving video, i assume is the video card
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| 15:23 | <mwalters> josefig: are you able to see the mouse if you move it around? (e.g., left/right... I'm thinking maybe the client thinks it has another monitor attached, and the one you actually do have attached is not the primary)
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| 15:24 | I ran into this with some of my ITX motherboards with laptop style display connectors on the board
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| 15:24 | If you do see the mouse, then try opening a root shell w/ epoptes on that client and check xrandr to see what displays it sees
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| 15:25 | (you might just want to do that regardless)
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| 15:26 | <josefig> no, i see like an error on screen_02 let me share with you
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| 15:27 | libglib-2.0.so.0.5600.3[7f626b029000+113000]
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| 15:28 | <mwalters> is that the only thing given?
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| 15:29 | <josefig> light-locker[1652] trap int3 ip:7f626b07ae11 sp:7ffc93151430 error:0 in libglib-2.0.so.0.5600.3[7f626b029000+113000]
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| 15:29 | <mwalters> probably try to open a VT and check /var/log/xorg logs
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| 15:29 | and syslog
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| 15:37 | <alkisg> josefig: do you have epoptes?
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| 15:37 | !epoptes
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| 15:37 | <ltsp> epoptes: Epoptes is a computer lab administration and monitoring tool. It works on Ubuntu and Debian based labs with LTSP or non-LTSP servers, thin and fat clients, standalone workstations, NX clients etc. More info: http://www.epoptes.org
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| 15:38 | <alkisg> Epoptes can help you access the client logs while xorg is still running, even black, and some times you can also see the client screen via vnc even though it's not displayed locally
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| 15:39 | <josefig> i see the problem is only with that account, i logged into that pc with my account and worked
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| 15:39 | some kind of lock or something
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| 15:39 | the other accounts worked, i thought was something with the pc
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| 15:39 | but nope
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| 15:40 | <mwalters> probably try the problem account on another PC to be sure. Did you copy ~/.config from another server for that account?
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| 15:41 | <josefig> nope
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| 15:51 | i removed the .Xauthority and worked
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| 15:59 | <alkisg> Maybe he ran "sudo something" at a point, and messed up his permissions
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| 15:59 | sudo find /home -uid 0
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| 15:59 | This will help you locate root-owned files, which is a problem
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| 19:42 | <josefig> now the ltsp clients works awesome :)
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| 23:32 | <mmarconm> i installed ltsp on ubuntu server 18.04, the fat but when try to boot, tftp freeze, and i got a timeout
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| 23:32 | <quinox> does it try to connect to the right IP?
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| 23:33 | <mmarconm> yes
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| 23:33 | <quinox> you can test the TFTP via command line from a running machine on the same network
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| 23:33 | perhaps a firewall is in the way
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| 23:33 | <mmarconm> how i test ?
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| 23:33 | tftp via command line ?
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| 23:34 | <quinox> https://support.symantec.com/en_US/article.TECH109612.html
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| 23:34 | oh it's windows
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| 23:35 | nc -v <ip> 69
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| 23:35 | and euh.. http://www.ing.iac.es/~docs/external/realport/ps-xxxx-tsht-tftp.html
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| 23:37 | <mmarconm> thanks, will try
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| 23:37 | what is the diference betw ftp and tfpt ?
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| 23:37 | do u know wqui
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| 23:38 | quinox:
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| 23:38 | <quinox> ftp is a real protocol, tftp is almost nothing
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| 23:38 | ftp runs on port 21
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| 23:39 | ftp has commands to get a list of all files, tftp doesn't
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| 23:39 | <mmarconm> ahhhh tftp use udp
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| 23:39 | ftp use tcp, that garante the package delivery in good state
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| 23:39 | good, thankyou
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| 23:39 | <quinox> (I wouldn't recommend FTP nowadays btw, the separate ports for data transfers are annoying + the binary/text difference can cause issues)
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| 23:39 | no problem
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| 23:40 | <mmarconm> ahhh, was just a requestion, i am not planning to use ftp ahahaha
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| 23:41 | my friend was argumenting with about upd, he said that udp its used for send data and tcp to receive data
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| 23:42 | <quinox> you can send and receive over both TCP and UDP
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| 23:42 | UDP is "fire and forget", packets can get delivered out of order or not at all - you have no guarantees
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| 23:42 | TCP sets up a proper connection which includes resending lost packages, making sure packages arrive in order
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| 23:43 | <mmarconm> yes, tcp uses sync ack, tree hand shake to stablish conn
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| 23:43 | udp i think its used for streaming videos
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| 23:44 | <quinox> yup yup
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