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


Channel log from 3 June 2014   (all times are UTC)

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11:03
<Hyperbyte>
Hi work_alkisg! :-) Do you know how I can blacklist a certain USB HID device from being used in Xorg on LTSP thin clients?
11:04
<work_alkisg>
Hi Hyperbyte... do you know how to do that without LTSP?
11:04
:)
11:04
<Hyperbyte>
Not really. Via Xorg.conf, but I haven't touched that.
11:07
<work_alkisg>
It's about xorg or about kernel modules?
11:07
First you need to find the way to blacklist it without ltsp
11:08
Then ask here :)
11:08
<Hyperbyte>
I don't have Linux without LTSP :(
11:09
It's about Xorg modules. You can blacklist these via Xorg.conf I believe, but I have no idea how that works with LTSP. I believe LTSP also does stuff with Xorg config doesn't it?
11:09
Kernel module isn't issue. It's a USB headset with buttons, those buttons continually confuse Gnome into thinking mouse buttons are constantly pressed, etc... mice stop working... it's nuts.
11:10
<work_alkisg>
Sorry, I don't know what needs to be done in linux so I can't comment on how this would be done in ltsp
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11:13
<Hyperbyte>
Meh... it's piss easy.
11:14
Just put some xorg.conf snippet in /usr/share/X11/xorg.conf.d/
11:14
<work_alkisg>
What snippet?
11:14
Pastebin it
11:14
<Hyperbyte>
Why didn't you just say that? ;'(
11:14
<work_alkisg>
:D
11:14
<Hyperbyte>
:P
11:14
<work_alkisg>
Btw, someone should file a bug report about ltsp starting to use xorg.conf.d...
11:15
<Hyperbyte>
There: http://pastebin.com/cZKqvSFE
11:15
Wait... bug... why?
11:15
<work_alkisg>
To make it easier to produce xorg snippets with ltsp
11:16
<Hyperbyte>
Oh, right.
11:16
See, you knew all this already.
11:16
Just trying to frustrate me further here. :P
11:17
<work_alkisg>
I don't know it, no.. for me it would make more sense if that was a kernel module
11:18
Hyperbyte: and, why don't you just drop that file in the chroot?
11:18
You want that for all clients, don't you?
11:18
<Hyperbyte>
Nah, it's a USB headset, which provides audio device (do need!) and USB input device for the buttons on it (do not want!)
11:18
The audio driver is kernel module, the USB input is Xorg module.
11:19
<work_alkisg>
Gotcha
11:19
<Hyperbyte>
work_alkisg, well obviously I meant /opt/ltsp/i386/usr/share... etc...
11:19
<work_alkisg>
Hyperbyte: ok, why don't you just put it to $CHROOT/usr/share/X11/xorg.conf.d/ ?
11:19
<Hyperbyte>
It's client Xorg stuff, if it's not on client it does absolutely nothing....
11:19
work_alkisg, that's what I did?
11:19
<work_alkisg>
I don't understand
11:19
<Hyperbyte>
13:14 <Hyperbyte> Just put some xorg.conf snippet in /usr/share/X11/xorg.conf.d/
11:20
<work_alkisg>
If that's how you solve it without ltsp, then putting that file in the chroot should work fine
11:20
I don't understand what you're telling me
11:20
<Hyperbyte>
Yeah, but ^^ that was all I needed.
11:20
<work_alkisg>
I don't understand if you're still having any issues, or if you solved them... :
11:21
<Hyperbyte>
I did
11:21
I solved them between 13:10 and 13:13
11:21
Heh
11:21
It was actually pretty easy... I upgraded my chroot from 12.04 to 14.04, right... of course made backup for the old one.
11:21
But I couldn't for the life of me find the code that disabled the USB headsets input.
11:22
<work_alkisg>
Cool :)
11:22
<Hyperbyte>
Googled my ass off (but with wrong terms) and couldn't find the xorg.conf.d with the right configuration I needed to port....
11:22
When I asked you, I suddenly realized Xorg doesn't "blacklist", it "ignores"... which is right Google term... and then I found xorg.conf.d and then I found my old config for disabling the Plantronics headsets.
11:24
Boy, this whole thing got a lot more complicated than it was before I asked you. :P
11:24
Hahahahhahahhaha
11:26
Okay - here is one LTSP related
11:26
After LDM login, clients say "Warning: Permanently added ECDSA host key for 192.168.100.11 ..."
11:28
On Ubuntu 14.04
11:28
And plymouth doesn't seem to work anymore since client upgrade from 12.04 to 14.04
11:29
Are kernel parameters still correct? quiet splash plymouth:force-splash vt.handoff=7
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11:32
<Axis_>
Can anyone help me out?
11:33
<work_alkisg>
!ask
11:33
<ltsp`>
ask: Don't ask to ask a question, simply ask it, and if someone knows the answer, they'll respond. Please hang around for at least a full hour after asking a question, as not everybody constantly monitors the channel.
11:35
<Axis_>
I'm thinking about switching to Linux. What does it mean by LTS, "something about support until 2 years-5 years" Does that mean once the support ends, I won't be protected or?
11:35
<work_alkisg>
That's a question for the #ubuntu channel, not for #ltsp
11:35
Ask there
11:35
<Axis_>
Ah sorry. Thank you!
11:35
<work_alkisg>
You're welcome
11:36
<Axis_>
Take care, and have a good one.
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12:53
<Hyperbyte>
work_alkisg, any idea about the other two questions? :P
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13:23
<alkisg>
Hyperbyte: "work_alkisg" means I'm probably not in my pc, so not monitoring IRC.. :)
13:23
About the warning, it's normal
13:23
About plymouth: it's started normally, we just removed it from the initramfs
13:24
It increased the initramfs size and made troubleshooting more difficult
13:24
Plymouth is not included in the initramfs by default, but ltsp forced its inclusion in previous versions
13:24
So we're just using the defaults now, so any issues about it are not ltsp related anymore
13:29
<Hyperbyte>
Okay
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15:19
<bennabiy>
alkisg: sorry for being touchy yesterday about the whole issue. I think I just misunderstood what you were hoping for and thought I was doing it right, but it still does not mean I should have an attitude about it.
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15:36
<alkisg>
bennabiy: I'm not hoping anything for LDM, because I really don't care about it... LDM, localapps, ltspfs, ltsp-build-client etc are parts of LTSP that I don't touch and don't care what others do with them
15:37
I was trying to give some ideas in order to be of some help, but you misunderstood my will to help with concern about the ldm implementation...
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15:57
<bennabiy>
yes, I appreciate you wanting to help
15:58
I will say I do not trust GRand as a PRNG
15:58
even if it is initially seeded with /dev/urandom to begin with
15:59
It is not cryptographically secure, and even tells you not to use it for anything other than poker games and the like
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16:08
<alkisg>
bennabiy: we're still talking about generating the salt, not about encryption, right?
16:08
Anyways, I really don't care about the implementation
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16:09
<alkisg>
When you have it ready, file a bug report in launchpad for it to be committed upstream, and maybe someone will push it
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20:48
<gbaman>
vagrantc: which env variable stores LTSP server IP?
20:49
thought it was $SERVER
20:49
but apparently not
20:53
<vagrantc>
depends on the context
20:53
but SERVER is used
20:54
<gbaman>
echo $SERVER on a terminal on a client just gives blank line
20:54
<vagrantc>
there's also NBD_SERVER, NFS_SERVER, LDM_SERVER ...
20:54
from an xterm?
20:54
it's not exported to the user's session
20:54
<gbaman>
sigh
20:55
how can I get it then?
20:55
<vagrantc>
but you could derive it from $SSH_CONNECTION or $DISPLAY
20:55
in a fat client?
20:55
<gbaman>
yes
20:56
got a script that user can run on pis that needs to get the LTSP server IP
20:56
$SSH_CONNECTION is empty
20:56
<vagrantc>
right, fatclient
20:57
DISPLAY is probably set to something not useful
20:57
<gbaman>
and $DISPLAY is just :7.0
20:57
yeah
20:57
<vagrantc>
you might be able to source ltsp_common_functions and use one of the functions in there...
20:57
<gbaman>
hmm, epoptes does it..
20:58
<vagrantc>
you could also add an LDM hook to export it
20:58
it's available to LDM, you could just add it to the stuff LDM exports in the session...
21:00
add a hook in /usr/share/ldm/rc.d/X90-export-server:
21:01
CLIENT_ENV="$CLIENT_ENV LTSP_SERVER=$SERVER" ?
21:02
<gbaman>
assuming that file should be empty?
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