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


Channel log from 11 May 2016   (all times are UTC)

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04:33
<alkisg>
!screen_02 | echo Leolo_2:
04:33
<ltsp`>
Leolo_2: 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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06:51
<rac_>
I want LTSP-PNP configuration with multiple Lan Card,
06:51
anyone can help?
06:52
help
06:55
<alkisg>
rac_: what exactly is your issue?
06:56
There are some basic instructions for that in the ltsp-pnp wiki page
06:56
!ltsp-pnp
06:56
<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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08:41
<alkisg>
!client-list
08:41
<ltsp`>
client-list: to get a list of all nbd-clients (which sometimes is the same as ltsp clients), run: netstat -tn | sed -n 's/.*:10809 *\([0-9.]*\):.*/\1/p' | sort -Vu
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16:59
<Leolo_2>
ok, my real question : what and how is /home/USER being mounted ?
16:59
<||cw>
sshfs
16:59
"mount" should show you that
16:59
<Leolo_2>
I know it's sshfs, but I want to know how it's being launched
17:00
<||cw>
IIRC, via hooks into the greeter/login process. been a long time since I bothered looking
17:01
<Leolo_2>
so hooks in ldm?
17:04
other question : how does one get the source code to a .deb?
17:25
<alkisg>
!ltsp-source
17:25
<ltsp`>
ltsp-source: at http://bazaar.launchpad.net/~ltsp-upstream/ltsp/ltsp-trunk/files
17:25
<alkisg>
!ldm-source
17:25
<ltsp`>
ldm-source: at http://bazaar.launchpad.net/~ltsp-upstream/ltsp/ldm-trunk/files
17:25
<alkisg>
Leolo_2: ^
17:32
Leolo_2: are you just a centos user trying to get ltsp working there, or are you planning to maintain ltsp in centos for other users as well?
17:36
<Leolo_2>
the first
17:37
maybe the later, depending on how much work it will be
17:37
if it's to much work imma say "fuck this" and go with drbl
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17:44
<Leolo_2>
FOUND IT!
17:44
/usr/share/ldm/rc.d/X01-localapps
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17:50
<Leolo_2>
wow, ldm is clever
17:50
it uses ssh to test a password, not pam
17:50
I'm.... I'm conflicted on how safe this is
17:51
but it is clever
17:51
what's more, it opens a control channel and sshfs uses that
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18:05
<||cw>
my understanding is that getting all the pam bits to play together so it can be done trait up pam has been a challenge, but it's finally close
18:05
and ltsp6 has a "just use pam" goal
18:17
<Leolo_2>
hmmm
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19:16
<alkisg>
Leolo_2: I think the most difficult part will be getting dracut to work, you should probably look at how gentoo did that part, in upstream ltsp
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19:17
<alkisg>
The rest of it, like ldm etc, should probably work fine as it is even in centos
19:17
ltsp 6 won't be implemented very soon, but we might be able to do some ground work in the debconf in the summer
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19:35
<lbssousa>
alkisg: is your multiseat setup working as expected now?
19:41
<alkisg>
Hi lbssousa
19:41
I only tried the dual gpu approach so far
19:41
It's working fine!
19:42
I haven't yet checked if I'll support it to ltsp as it is now, or if I'll wait for ltsp 6 when we'll be using lightdm
19:42
I'd like to also try the xephyr approach, but I'm not sure on how to start there, I think I'll need a few wrappers to launch one lightdm per xephyr window?
19:43
and one central xorg?
19:43
Do you have such wrappers handy for sharing?
19:43
<lbssousa>
Yes. I'll send them to you later.
19:43
<alkisg>
Cool, thanks a lot
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19:43
<alkisg>
lbssousa: I do have a question about the dual gpu setup though
19:44
When I was running glxgears in one screen, and a game in the other, I got a gpu crash,
19:44
...and I'm wondering, do those 2 gpus need to cooperate much/
19:44
is it more unstable in general than plain xorg with 1 gpu?
19:45
<lbssousa>
It may be related to your drivers. Which model is your offboard video card?
19:46
<alkisg>
It was the onboard one, intel i5, that crashed
19:46
But it might also be related to the window manager etc
19:46
<lbssousa>
Maybe.
19:46
<alkisg>
Advanced Micro Devices, Inc. [AMD/ATI] RV516 [Radeon X1300/X1550 Series] [1002:7187]
19:46
Subsystem: ASUSTeK Computer Inc. RV516 [Radeon X1300/X1550 Series] [1043:0174]
19:46
Kernel driver in use: radeon
19:46
That's the pci-e one, it's old
19:47
But in general, you don't get such crashes, do you?
19:48
<lbssousa>
I don't get even graphical acceleration in all seats :)
19:48
My offboard video card is an old-fashion Silicon Motion SM501 PCI card.
19:49
One thing you may want to start working on is Epoptes broadcasting to all seats.
19:50
Do you remember https://bugs.launchpad.net/epoptes/+bug/978050 ?
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19:51
<alkisg>
lbssousa: wait, doesn't broadcasting work properly with 2 gpus?
19:52
<lbssousa>
Current epoptes-client system-wide instance is only able to handle a single display.
19:53
You need to hack epoptes gui.py to broadcast via user-wide instances.
19:53
<alkisg>
Gotcha, yup I remember now
19:54
Which isn't what we want in the thin client case
19:54
<lbssousa>
Yup
19:54
<alkisg>
As it will cause duplicate network bandwidth
19:55
<lbssousa>
You may need to improve epoptes-client system-wide instance to be able to handle multiple displays, or something similar.
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19:56
<alkisg>
I have a good plan there, to connect the user instances with the system instances, and then only the system instance with the epoptes daemon service
19:56
<lbssousa>
I guess this is *the* only missing feature to make Epoptes work 100% out-of-box in multiseat systems.
19:56
<alkisg>
But that's a big restructuring, so it'll have to wait for later
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19:57
<alkisg>
daemon <=> system epoptes-client over net, and system <=> user epoptes client over local socket
19:57
(or dbus)
19:58
<lbssousa>
Interesting. Another missing feature is the ability to apply different aliases to each seat of a given host.
19:58
<alkisg>
In a while, epoptes and possibly also ltsp will start supporting systemd systems only
19:59
At that point, it'll be easier to rely on logind, seat information, etc
19:59
So the main reason I'm postponing that part is backwards compatibility, not actual work
20:00
<lbssousa>
What about branching off a new Epoptes 1.x series?
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20:01
<alkisg>
I have a lot in my mind, so I try to support 1 series per project only, it needs less brain-cpu :)
20:01
<lbssousa>
OK :)
20:01
I need to go now. We can talk tomorrow.
20:01* lbssousa waves
20:01
<alkisg>
I imagine that we'll start that in the summer
20:01
bb! and thanks
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20:04
<alkisg>
vagrantc: I tried multiseat with 2 gpus (without ltsp), it's incredibly easy nowadays with systemd and lightdm!
20:05
<vagrantc>
nice
20:05
so LTSP6 will finally support multiseat out of the box!
20:05
<alkisg>
And it works very well, with 3d acceleration and everything...
20:05
We'll need a couple of lts.conf ==> udev rules scripts, but yup, ltsp 6 will have that :)
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