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


Channel log from 1 November 2014   (all times are UTC)

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10:54
<minetreu>
good to be here - morning ppl
10:58
i stuck on thin client configuration eg. ldm_directx=true will bring the corr display driver, false the gallium pipe, anyhow while =true rendering is faulty... could somebody help?
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12:02
<minetreu>
hello khildin
12:02
<khildin>
morning
12:05
<minetreu>
can u tell me about the channel? will i be able to find help on my question above?
12:15
my setup is this: 2 nic server 1000Mbit quadCore/8Gb ram, ubuntu 14.04 gnome-shell driving up to 10 thin-clients (local - vpn as a goal)
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12:44
<minetreu>
i am back, greetings :)
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12:50
<alkisg_web>
minetreu: have you read about ltsp diskless fat clients?
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13:10
<minetreu>
hi alkisg_web, probably yes. do have some specific in your mind? thin enviroment is much more flexible to administrate, what you say?
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15:38
<minetreu>
hi
15:42
any pro's in?
15:43
<Hyperbyte>
!ask
15:43
<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.
15:44
<minetreu>
nice
15:45
i stuck on thin client configuration eg. ldm_directx=true will bring the corr display driver, false the gallium pipe, anyhow while =true rendering is faulty... could somebody help?
15:45
my setup is this: 2 nic server 1000Mbit quadCore/8Gb ram, ubuntu 14.04 gnome-shell driving up to 10 thin-clients (local - vpn as a goal)
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16:06
<alkisg_web>
"13:10 <minetreu> hi alkisg_web, probably yes. do have some specific in your mind? thin enviroment is much more flexible to administrate, what you say?" ==> thin clients get graphics issues etc like the ones you mentioned
16:06
ltsp fat clients are as easy to configure as thin clients, and don't get the graphics/cpu/net issues
16:06
e.g.
16:06
!flash
16:06
<ltsp>
flash: Yes, flash sucks. An HD full screen 30 fps video needs 2.5 Gbps bandwidth (1920×1080×4×30)! Make sure you have LDM_DIRECTX=True in your lts.conf file, or if it's just youtube you're after, try some flash replacing plugin like http://linterna-magica.nongnu.org
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16:06
<alkisg_web>
Flash, 3d etc are not an issue at all with ltsp fat clients...
16:07
What are your client specs? CPU, RAM?
16:09
<minetreu>
they would fit a fatclient for sure, the thing is, right now i log onto any user which is serverside available, i use the desk-environment as well
16:10
installations are possible and without rebuilding the ltsp-image
16:11
somewghat like rdesktop usage. but if i chroot and install the gnome-shell, update the image and so on... then i have a fat-client setup, right
16:12
<alkisg_web>
Right, either gnome-shell or gnome-flashback or any other environment
16:12
!fatclients
16:12
<ltsp>
fatclients: You may find some info about the Ubuntu/LTSP implementation of fat clients at https://help.ubuntu.com/community/UbuntuLTSP/FatClients
16:12
<alkisg_web>
!ltsp-pnp
16:12
<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
16:13
<alkisg_web>
Any remote-desktop technology will suffer from bandwidth, cpu, 3d etc issues, it's your call if you prefer that instead of full fat clients
16:13
I.e. to save one ltsp-update-image...
16:15
<minetreu>
so you say, by setting ldm_directx=true the thin-clients will lack of 3d etc, due to bandwith limits?
16:20
<alkisg_web>
minetreu: no, not only because of bandwidth, but because of X, dri etc limitations too
16:22
E.g. www.virtualgl.org tries to implement 3d over the network, but doesn't work always, and it's not really fast either
16:23
<minetreu>
i guess i only have probs wih the desktop-manager... playing a mp4 in vlc, flash in ff is flawless. it is only no correct rendering of the desktop-manager
16:24
<alkisg_web>
You can try another desktop environment like gnome-flashback if you're satisfied with the rest
16:24
xvideo is ok if you have 50 mbps per client, unless of course if you try to playback hd movies which can't be done in gigabit network
16:24
flash video isn't ok
16:24
<minetreu>
means , the app menu (gnome-shell) is not available, borders arents correct, seach functions are not present
16:25
<alkisg_web>
right, use gnome-flashback, or lxde, or xfce etc
16:25
<minetreu>
thats with ldm_directx=True
16:25
<alkisg_web>
Yup
16:26
<minetreu>
set to false, the shell is absolutely shown correct but stuttering, due to using this gallium 0.4 llvm pipe
16:26
<alkisg_web>
Yup
16:27
You can do the same with LIBGL_ALWAYS_SOFTWARE=1 with ldm_directx=true too
16:27
It's still lag due to llvmpipe
16:27
*It'll
16:27
Or, with LIBGL_ALWAYS_INDIRECT=1
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18:55
<minetreu>
c'mon a masterpiece of software and no chance of fullfilling my wish?
18:56
<vagrantc>
?
19:08
<minetreu>
hi vagrant, i just addaed these line to a previous convo... my log showed something i wont take for real
19:09
alkisg_web: i will try the .cnf option LIBGL_ALWAYS_SOFTWARE=1
19:11
it is not an option for me to fallback-gnome or lxde...
19:17
<vagrantc>
you're needing some sort of GL environment on a thin client?
19:22
<minetreu>
yep
19:24
but hey, wait... i set up my server and i am able to boot clients, previous i build a clean image with no chrootet installations at all. so i guess this means thin is the delivered image, due to non-persistent xsession.
19:26
on the clients i am now able to manage all administrative stuff real time. including new app installations. at that point i loose track on how the system works
19:28
kernel boots from /var/lib/tftp... ? used image is located at /opt/ltsp/arch.../image/ ? and persistend space adds from server dirs???
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19:40
<vagrantc>
sounds like you're booting fat clients, probably with the ltsp-pnp method
19:41
in which case, any application installs running on the client will only last until reboot- they're installed in tmpfs.
19:41
!ltsp-pnp
19:41
<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
19:42
<vagrantc>
the images are usually stored in /opt/ltsp/images/ARCH.img
19:42
<epoptes_user2>
Hi. If the server is started up after clients, is there a way for the server to 'retrieve' the clients ?
19:42
<vagrantc>
you can create the images from /opt/ltsp/ARCH (classic NBD method) or from the server install at /
19:43
<epoptes_user2>
(i was speaking of epoptes)
19:43
<vagrantc>
epoptes_user2: not sure if there is ... the clients connect to the server.
19:43* vagrantc was speaking to minetreu
19:44
<epoptes_user2>
ok, it's what i thought
19:45
<vagrantc>
epoptes_user2: it probably wouldn't be hard to get epoptes-client to re-poll the server periodically, but there isn't to my knowledge a way for the server to poll for available clients
19:45
might be able to set up an avahi service or something...
19:46
<epoptes_user2>
about epoptes again, is there a way to authorize all users of the server to launch the UI
19:46
all the users of the server are from a LDAP
19:46
<vagrantc>
so everyone can monitor everyone?
19:46
<epoptes_user2>
and so i can't really add them one by one to the epoptes group
19:46
yes
19:46
the client will only be launched by a teacher
19:47
sorry, the server *
19:48
actually, my college is using a distro called Samba-Edu, when a logs into the domain, the ubuntu client creates a local home profile
19:48
<vagrantc>
can't you use LDAP to add all users to the epoptes group?
19:49
or use pam_group to add all users to epoptes?
19:50
<epoptes_user2>
i could add the teachers manually in /etc/group
19:50
something like a hundred colleagues
19:50
i didn't know the pam_group, i'm reading the manual
19:51
but i was wondering if there wasn't a simpler way to do it
19:51
<vagrantc>
simpler than what?
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19:52
<vagrantc>
pam_group can allow you to add all users to a group ... LDAP or other PAM authentication ought to be able to easily add all users or categories of users to a group...
19:53
<epoptes_user2>
than editing the /etc/group file
19:53
not especially hard to do but pretty ugly
19:53
ok
19:55
is pam_group available on ubuntu ?
19:59
<vagrantc>
yes
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21:21
<minetreu>
bye bye
22:11
opening time tomorrow??
22:13
<vagrantc>
minetreu: opening time for what?
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