IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 11 May 2016 (all times are UTC)
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| 04:33 | <alkisg> !screen_02 | echo Leolo_2:
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| 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,
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| 06:51 | anyone can help?
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| 06:52 | help
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| 06:55 | <alkisg> rac_: what exactly is your issue?
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| 06:56 | There are some basic instructions for that in the ltsp-pnp wiki page
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| 06:56 | !ltsp-pnp
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| 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
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| 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 ?
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| 16:59 | <||cw> sshfs
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| 16:59 | "mount" should show you that
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| 16:59 | <Leolo_2> I know it's sshfs, but I want to know how it's being launched
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| 17:00 | <||cw> IIRC, via hooks into the greeter/login process. been a long time since I bothered looking
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| 17:01 | <Leolo_2> so hooks in ldm?
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| 17:04 | other question : how does one get the source code to a .deb?
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| 17:25 | <alkisg> !ltsp-source
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| 17:25 | <ltsp`> ltsp-source: at http://bazaar.launchpad.net/~ltsp-upstream/ltsp/ltsp-trunk/files
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| 17:25 | <alkisg> !ldm-source
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| 17:25 | <ltsp`> ldm-source: at http://bazaar.launchpad.net/~ltsp-upstream/ltsp/ldm-trunk/files
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| 17:25 | <alkisg> Leolo_2: ^
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| 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?
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| 17:36 | <Leolo_2> the first
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| 17:37 | maybe the later, depending on how much work it will be
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| 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!
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| 17:44 | /usr/share/ldm/rc.d/X01-localapps
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| 17:50 | <Leolo_2> wow, ldm is clever
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| 17:50 | it uses ssh to test a password, not pam
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| 17:50 | I'm.... I'm conflicted on how safe this is
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| 17:51 | but it is clever
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| 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
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| 18:05 | and ltsp6 has a "just use pam" goal
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| 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
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| 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?
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| 19:41 | <alkisg> Hi lbssousa
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| 19:41 | I only tried the dual gpu approach so far
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| 19:41 | It's working fine!
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| 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
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| 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?
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| 19:43 | and one central xorg?
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| 19:43 | Do you have such wrappers handy for sharing?
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| 19:43 | <lbssousa> Yes. I'll send them to you later.
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| 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
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| 19:44 | When I was running glxgears in one screen, and a game in the other, I got a gpu crash,
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| 19:44 | ...and I'm wondering, do those 2 gpus need to cooperate much/
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| 19:44 | is it more unstable in general than plain xorg with 1 gpu?
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| 19:45 | <lbssousa> It may be related to your drivers. Which model is your offboard video card?
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| 19:46 | <alkisg> It was the onboard one, intel i5, that crashed
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| 19:46 | But it might also be related to the window manager etc
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| 19:46 | <lbssousa> Maybe.
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| 19:46 | <alkisg> Advanced Micro Devices, Inc. [AMD/ATI] RV516 [Radeon X1300/X1550 Series] [1002:7187]
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| 19:46 | Subsystem: ASUSTeK Computer Inc. RV516 [Radeon X1300/X1550 Series] [1043:0174]
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| 19:46 | Kernel driver in use: radeon
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| 19:46 | That's the pci-e one, it's old
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| 19:47 | But in general, you don't get such crashes, do you?
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| 19:48 | <lbssousa> I don't get even graphical acceleration in all seats :)
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| 19:48 | My offboard video card is an old-fashion Silicon Motion SM501 PCI card.
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| 19:49 | One thing you may want to start working on is Epoptes broadcasting to all seats.
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| 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?
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| 19:52 | <lbssousa> Current epoptes-client system-wide instance is only able to handle a single display.
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| 19:53 | You need to hack epoptes gui.py to broadcast via user-wide instances.
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| 19:53 | <alkisg> Gotcha, yup I remember now
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| 19:54 | Which isn't what we want in the thin client case
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| 19:54 | <lbssousa> Yup
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| 19:54 | <alkisg> As it will cause duplicate network bandwidth
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| 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
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| 19:56 | <lbssousa> I guess this is *the* only missing feature to make Epoptes work 100% out-of-box in multiseat systems.
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| 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
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| 19:57 | (or dbus)
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| 19:58 | <lbssousa> Interesting. Another missing feature is the ability to apply different aliases to each seat of a given host.
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| 19:58 | <alkisg> In a while, epoptes and possibly also ltsp will start supporting systemd systems only
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| 19:59 | At that point, it'll be easier to rely on logind, seat information, etc
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| 19:59 | So the main reason I'm postponing that part is backwards compatibility, not actual work
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| 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 :)
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| 20:01 | <lbssousa> OK :)
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| 20:01 | I need to go now. We can talk tomorrow.
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| 20:01 | * lbssousa waves | |
| 20:01 | <alkisg> I imagine that we'll start that in the summer
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| 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!
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| 20:05 | <vagrantc> nice
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| 20:05 | so LTSP6 will finally support multiseat out of the box!
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| 20:05 | <alkisg> And it works very well, with 3d acceleration and everything...
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| 20:05 | We'll need a couple of lts.conf ==> udev rules scripts, but yup, ltsp 6 will have that :)
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