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


Channel log from 3 October 2017   (all times are UTC)

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07:10
<alkisg>
vagrantc: remember our last LDM_AUTOLOGIN chat? I have an idea there,
07:10
a new directive, MAP_HOSTNAME_TO_GUESTNAME="pc|guest"
07:11
...so if the client is named pc01, then LDM_HOSTNAME would automatically get set to guest01
07:11
...and my question is... while this is very convenient, I'm not sure it's easily explainable to others :D
07:11
<vagrantc>
alkisg: i don't remember our last chat, but that sounds reasonable
07:12
<alkisg>
Maybe the directive name isn't very appropriate... or the | syntax
07:13
My initial problem is that people set LDM_AUTOLOGIN and/or LDM_GUESTLOGIN to true, and that has issues with new clients that are not defined in lts.conf
07:13* vagrantc might be to tired to really comment, though :)
07:13
<alkisg>
So I wanted to introduce LDM_AUTOLOGIN=auto, which you didn't like
07:13
Ah,let's leave it for another time then
07:14
<vagrantc>
the default is to use the hostname of the client, no?
07:14
<alkisg>
Yes
07:14
So for example the teacher sets up names like pc01, pc02 and LDM_USERNAME=guest01, guest02, and globally sets LDM_AUTOLOGIN, but then he changes a NIC and the client restarts Xorg all the time and he can't understand why
07:15
So I wanted a way to auto-disable autologin for "unknown" clients, that have the ltsp123 name
07:18
<Hyperbyte>
Good morning. :-)
07:19
<alkisg>
Hi Hyperbyte
07:19
<vagrantc>
good morning, and good night! :)
07:19* vagrantc waves
07:19
<alkisg>
bb
07:19
<vagrantc>
alkisg: given those constraints, i think the mapping idea is pretty good
07:20
<alkisg>
Cool
07:20
<vagrantc>
alkisg: might fiddle with the names or syntax a bit, but overall seems fine
07:20
<alkisg>
And we'd document that "if that new directive is set, it automatically sets or reset LDM_AUTOLOGIN as needed"
07:20* vagrantc waves harder this time
07:20
<alkisg>
bb again! :)
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07:20
<Hyperbyte>
I have the strangest problem with Chromium on Ubuntu LTSP Mate... somehow it stays 'always on top'... it's a bit hard to explain, but let's say I have LibreOffice, a Caja window and Chromium open
07:21
And I'm using the application switcher at the bottom panel to go to another application, it simply won't work until I minimize Chromium.
07:21
<alkisg>
And you haven't actually checked "always on top" from its window menu, right? :)
07:22
<Hyperbyte>
Well that is a good question. I shouldn't, as I have two companies with all kinds of users having this issue... but let me make sure.
07:24
Where is the Chromium window menu?
07:25
Ah found it
07:25
No, it's not checked.
07:25
<alkisg>
Is that chromium-browser, or google chrome?
07:25
<Hyperbyte>
Chromium browser.
07:26
Also it's not 100% consistent, but it happens frequently enough so I can reproduce it easily. I think that after I've minimized it, I can switch to another application, but as soon as I switch to Chromium again it won't go anymore
07:27
<alkisg>
Ah it also has an option to enable/disable system window borders
07:27
Which I guess means "marco" window manager
07:27
<Hyperbyte>
I've seen that option, but doesn't change a thing.
07:27
What kind of frustrates me....
07:28
I've had this issue in Ubuntu 14 although less frequently, and I also have it in Ubuntu 16, at two different companies.
07:28
And yet when I search online, all I find is unrelated garbage.
07:29
To me, it seems like a common issue, but apparently it isn't.
07:33
When it first occured I figured the folks at Chromium would remedy it in some update... but that didn't happen and according to Google, I'm the only one experiencing this on all users and all clients across two companies with different installations. :-D
07:34
So I kinda think it might be LTSP related. As Ubuntu 16 Mate with Chromium seems common enough.
07:34
Ubuntu 16 Mate LTSP with Chromium is less common I guess.
07:35
Oh this is with thin clients btw, although I can also reproduce the issue on an x2Go session strangely enough.
07:38
<alkisg>
Ah, I haven't tested thin clients, although I would guess that if you enable the system window border, it would work fine
07:38
<Hyperbyte>
It is enabled by default
07:38
And in this case it is.
07:38
<alkisg>
Enabled by default? Not for me here...
07:39
I have the chromium-browser blue bar, not the mate black bar
07:40
<Hyperbyte>
Hmmm... I do, but maybe that's my settings then
07:40
But doesn't change a thing.
07:41
Would you like to take a look? ;-)
07:42
<alkisg>
Sorry installing ltsp to schools currently!
07:46
<Hyperbyte>
That's ok, if you do have time later let me know. :-)
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08:06* alkisg isn't very fond of troubleshooting thin client issues :D
08:08
<Hyperbyte>
Why not? :-)
08:08
(will it help if you're troubleshooting an x2go session? ;-))
08:12
<alkisg>
Haha
08:13
Thin client users are the ones that don't have money to pay for services :D
08:19
<Hyperbyte>
Actually only reason we're using thin clients is because of efficiency... I don't have to maintain or clean workstations, just the server... I bought pretty powerful thin clients, but so that they don't have active cooling so there's no noise from computer fans in the office...
08:23
Of course client cost is a nice factor, but we negated that with the costs of the server.
08:45
<alkisg>
" I don't have to maintain or clean workstations, just the server.." => isn't that the same with ltsp fat clients?
08:46
LTSP fat clients have the benefit that things don't run remotely, where developers don't care if things are broken
08:47
E.g. if you report that issue you're having to chromium-browser, noone will care, while if it happened in ltsp fat clients, it would also happen in standalone clients, i.e. in all users, so they'd care
09:44
<Hyperbyte>
alkisg, maintain/clean, I meant physically.
09:44
<alkisg>
fat clients aren't physically fatter than thins :)
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09:56
<Hyperbyte>
alkisg, depending of course on the power you need to run your desktops.
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14:57
<TFC>
i have multiple architecture fat clients i want to use LTSP to manage users and program updates but im unsure on how to do this especially regarding booting to a static IP that the server is on (DHCP is not an option)
15:02
<alkisg>
TFC: let's answer that one by one
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15:03
<alkisg>
What kind of architectures?
15:03
What do you mean "booting to a static ip dhcp is not an option"? Do you know about proxydhcp?
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15:34
<TFC>
ARM and AMD64
15:35
and i want the fat clients to look at a specific ip to boot
15:35
<alkisg>
!raspberrypi | echo TFC:
15:35
<ltsp>
TFC: raspberrypi: (#1) Ubuntu/LTSP on Pi 2: https://help.ubuntu.com/community/UbuntuLTSP/RaspberryPi, or (#2) Debian/LTSP (with raspbian chroot) on Pi: http://cascadia.debian.net/trenza/Documentation/raspberrypi-ltsp-howto/, or (#3) unofficial Ubuntu/LTSP (with raspbian chroot) on Pi: http://pinet.org.uk/
15:35
<alkisg>
#1 there describes i386 and raspberry, your case is similar
15:36
All DHCP clients look at a specific IP
15:36
The one of the dhcp or proxydhcp server
15:36
<TFC>
yep
15:36
<alkisg>
If you have a dhcp server, you can use a proxydhcp one
15:36
If you don't want a proxydhcp server, then you need some form of locale media
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15:37
<alkisg>
hard disk, cd rom, floppy, whatever
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15:37
<TFC>
they all have HDD's
15:37
<alkisg>
Yes but I don't think you know what proxydhcp is
15:37
So you want something that is not suitable for you
15:38
<TFC>
yeah i only know basics of networking
15:38
<alkisg>
OK then start with this;
15:38
!ltsp-manager
15:38
<ltsp>
ltsp-manager: LTSP Manager is a GUI tool that makes LTSP maintenance easy. It's the recommended way to install LTSP in common setups. More info: http://wiki.ltsp.org/wiki/Ltsp-manager
15:38
<alkisg>
When you are finished booting the amd64 clients, then follow the previous link with the raspberry pi
15:39
<TFC>
okay thanks
15:39
<alkisg>
Do you have a dhcp server or router in your network?
15:39
<TFC>
yes
15:39
<alkisg>
Even a microsoft dhcp server, untouchable?
15:39
Then yes proxydhcp is fine
15:39
<TFC>
pfsense router
15:39
<alkisg>
Go for that one
15:39
Cool
15:39
Follow those 2 pages, in turn
15:39
Fir ltsp manager, then raspberry pi page
15:39
*first
15:40
<TFC>
okay ill try that
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17:54
<bitingmidge>
LDM_AUTOLOGIN=True has been working for me for years but has stopped sometime in the last couple of weeks (clients don't reboot all that often so I didn't notice). Both server and client running Ubuntu 16.04 and have unattended-upgrades running so maybe a package update broke it? I can see the lts.conf file being requested in the logs but client is now being dropped into an Ubuntu login screen instead of auto login. Any ideas?
17:55
<alkisg>
bitingmidge: replace LDM_AUTOLOGIN with LDM_GUESTLOGIN
17:55
Do you see the LDM login screen and the guest login button?
17:55
Wait, what ubuntu login screen?
17:56
LDM or LightDM?
17:56
Or text?
17:58
<bitingmidge>
It must be LightDM. It's the Ubuntu one.
17:59
<alkisg>
Does it have a white background?
17:59
Can you login in that DM?
18:00
<bitingmidge>
Yes, I can log in with the user I want to auto login as and it logs in correctly.
18:00
<alkisg>
(08:59:39 μμ) alkisg: Does it have a white background?
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18:01
<bitingmidge>
No, it's an Ubuntu graphic.
18:02
<alkisg>
if you login to the client, and open a terminal, what's the prompt?
18:02
e.g. user@ltsp123
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18:03
<bitingmidge>
I will have to check on that...
18:08
<alkisg>
OK
18:17
<bitingmidge>
alkisg: The prompt is: pkgspecs15@ltsp642
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18:32
<alkisg>
bitingmidge: and what's the output of cat /var/cache/ltsp/ltsp_client_env in that terminal?
18:32
!pastebin
18:32
<ltsp>
pastebin: try !paste
18:32
<alkisg>
!paste
18:32
<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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18:45
<bitingmidge>
alkisg: I appreciate your help. It will take me a few minutes to get that for you. Have to travel to a few minutes away where the terminals are located. I'm just slightly remote at the moment ;)
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19:30
<bitingmidge>
alkisg: Sorry about the long delay. Here is the pastern link --> https://pastebin.com/RcyGrzF3
19:30
s/pastern/pastebin
19:35
<alkisg>
bitingmidge: there's no autologin there
19:35
Put your lts.conf to pastebin, you probably have some syntax error or something
19:35
<bitingmidge>
ok
19:35
<alkisg>
(modify the password, put *)
19:37
<bitingmidge>
gotcha
19:44
alkisg: Here is the lts.conf --> https://pastebin.com/YQ4pDspg
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20:02
<alkisg>
bitingmidge: put [default] on top
20:06
<bitingmidge>
alkisg: You're the best!
20:07
Thank you for hitting me with the mental clue stick.
20:07
Thank you for giving up some of your valuable time to help me.
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20:27
<gehidore>
I got a real stick I can hit you with if it'll help in the future
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