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

Request log from specific day:

Channel log from 5 March 2018 (all times are UTC)

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13:28	<gp> So I've been having a difficult time getting ltsp working on Ubuntu 16.04. I thought I was having auth issues but that doesn't seem to be the case. I've taken actual auth out and replaced it with a dummy user. When I log into the LDM screen I get a successful auth and then the screen goes black and then it returns the LDM login screen
13:30	I guess that means my desktop startx isn't working?
13:31	Where do I tell LTSP to use mate desktop?
13:35	<alkisg> You can select the desktop using the LDM Preferences button/menu
13:35	(assuming you do have mate installed, that is)
13:47	<gp> Thanks. Installing ubuntu-desktop to verify I didn't correctly install mate
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14:02	<gp> Is it possible to configure the LDM script to default to different desktops by options to the shell script?
14:04	<alkisg> !lts.conf
14:04	<ltsp> lts.conf: (#1) http://manpages.ubuntu.com/lts.conf, or (#2) lts.conf manpage is available in the ltsp-docs package
14:05	<alkisg> Sure, see LDM_SESSION there
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16:08	<gp> Trying to decide if it is wise to run auto updates and rebuild the client image nightly for apt updates? using ltsp-pnp. Anyone do this?
16:08	or weekly
16:08	or something like that
16:27	<alkisg> I don't think it's worth it. Manually on every kernel upgrade should be enough...
16:36	<gp> Okay. Thank you
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17:00	<quinox1> gp: I do it weekly, but just for fun really
17:00	it's all automated so it costs me nothing
17:02	<alkisg> auto-updates break a lot of schools here, so i disable them
17:02	E.g. it autoupdates in the background while the teacher shuts down => apt corrupted
17:02	Silly debian/ubuntu practise... no popup, no tray notification...
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18:29	<gp> I am having trouble with graphics drivers. Is it possible to try the amdgpu-pro drivers or is that ill-advised?
18:30	Or how do I get a list of drivers I can use for xserver in lts.conf?
18:30	I am trying to force amd driver but it doesn't seem to be working
18:31	<alkisg> Forcing a driver is rarely needed in Ubuntu
18:31	What is the exact issue?
18:32	<gp> I had to update a fat client graphics card that went out. One of AMD 580 cards is the replacement. But I cannot get it to be recognized by the system and it will not let me configure the monitors
18:32	It keeps autoselecting an intel driver
18:32	<alkisg> Is it a thin client or a fat one?
18:33	If you open a terminal, do you see user@ltsp123, or user@server?
18:33	<gp> One sec I will check.
18:34	Hrm rebuilt the image and having issues logging in. Will report back asap
18:34	<alkisg> You can also just open epoptes and see if it's green or blue
18:35	<gp> It should be a fat client but I haven't explicitly configured it
18:35	It is rebooting now. Commented out the lts.conf lines that I added
18:37	terminal lists user@ltsp116 which is the client hostname
18:37	<alkisg> There, type: lspci -nn -k \| grep -A 3 VGA \| nc termbin.com 9999
18:37	What's the output?
18:38	<gp> http://termbin.com/680m
18:39	thats a neat paste uploader
18:42	<alkisg> You might want to ask in #ubuntu-x about the best driver for that
18:43	Mention Ubuntu 16.04 and your card; ltsp doesn't matter here
18:43	If they say you need amdgpu, then install it
18:43	<gp> According to ubuntu docs it should be amdgpu
18:43	which is installed
18:43	xserver-xorg-video-amdgpu
18:44	<ah\|> Hi@all, I have a quite new installation of ltsp and I observe a weird behaviour: Some users work as expected, some are somehow denied an thrown back to login. I can't see any differences in their groups or in their (permissions on) home-dirs. Does anyone know what I could have missend?
18:44	<alkisg> ah\|: a .dmrc that specifies the wrong session
18:44	Tell them to try selecting a session from the LDM Preferences menu, as a test
18:45	<ah\|> I tested that, but no effect. But you are right, they are different
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18:48	<gp> alkisg: sudo update-pciids seems to have let it identify the card. hopefully that fixes driver detection
18:48	<ah\|> Even the "xterm as fallback" option is not working if selected manually for the non-working users
18:50	<alkisg> ah\|: if you install epoptes.org and you're around in 40', I could take a look remotely
18:50	bb in 40'...
18:50	<ah\|> I'll try that
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19:31	<alkisg> ...back
19:32	ah\|: here?
19:32	<ah\|> yes
19:32	<alkisg> !vnc-edide
19:32	<ltsp> vnc-edide: To share your screen with me, open Epoptes → Help menu → Remote support → Host: srv1-dide.ioa.sch.gr, and click the Connect button
19:35	<ah\|> Well, not that easy. X11 MIT Shared Memory Attach failed
19:35	<alkisg> ah\|: from the server, not the client
19:35	<ah\|> Might be because I'm ssh-ing to the epoptes machine
19:35	<alkisg> Ah ok, then:
19:35	x11vnc -noshm -connect srv1-dide.ioa.sch.gr
19:39	<ah\|> I'm feeling like a first time user :) I need some seconds to get x11vnc to that machine
19:39	<alkisg> x11vnc is a dependency of epoptes
19:40	So if you installed epoptes, it should be there...
19:41	<ah\|> oh, on this machine, ok
19:48	<alkisg> ah\|: is this a test server?! ltsp-server with only 1 gb ram?!
19:49	<ah\|> well for installation purposes yes. It is a virtual one. And when it is running I will grant more RMA
19:49	RAM
19:49	<alkisg> OK
19:50	<ah\|> Could go up to 8gb
19:50	I thought as long as I'm the only one testing...
19:51	<alkisg> ah\|: ok, when it finishes reboot the client
19:51	<ah\|> Yep
19:55	login prompt is there
19:56	<alkisg> Hmm, yet I don't see the client in epoptes
19:57	<ah\|> I just checked: a ping to "server" redirects to the epoptes server
20:02	<alkisg> ah\|: do you have shell access to the client via screen_02?
20:02	Can you type "epoptes-client server" there?
20:03	There it is :)
20:04	ah\|: let's try first with plain ssh, as the bad user
20:06	X_COLOR_DEPTH="16" for fat clients isn't a good thing
20:06	<ah\|> ok, I'm not keen on that
20:07	<alkisg> Also LDM_SESSION="/usr/bin/openbox-lxde" doesn't exist in the xsession files
20:07	<ah\|> You are right
20:08	But that does not explain why it is also when switching manually to a session type.
20:09	<alkisg> What does that error mean?
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20:09	<ah\|> means interruption in operating system call
20:09	<alkisg> ah\|: ah, does the password have any weird character like e.g. it starts with a space?
20:10	<ah\|> no lower charachter and numbers
20:15	weird, this is another user.
20:15	<alkisg> ah\|: and the weirdest part is that it allows him to wrie
20:15	*write
20:16	It's like they both have the same uid?!
20:17	ah\|: ok,the problem is that you created users in the chroot
20:17	Delete them, then run ltsp-update-image again
20:20	ok
20:21	<ah\|> you are fast! would have taken me ages to find that mistake!
20:21	<alkisg> After troubleshooting thousands of installations, you become faster :D
20:22	<ah\|> Right
20:22	Nevertheless: Thanks a lot!
20:22	<alkisg> You're welcome
20:28	<ah\|> yippeee! It's working!
20:28	<alkisg> :)
20:32	* alkisg loves the lemmings "yippeee" reference :D
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21:31	<ah\|> alkisg, you made my evening. cu
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21:40	<gp> You also pointed me in the right direction! thanks
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