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08:41 | <markit> hi, a clarification please
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08:41 | if I setup, for instance, the power saving features/params when I'm logged in a thin client
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08:41 | am I acting against server setup or thin client one?
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08:41 | <alkisg> The programs are running on the server, so any changes that you do are server settings
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08:42 | ...with the exception of any X-related settings, because the X server is running on the client
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08:43 | <markit> alkisg: mmm so makes not sense try to prevent thin client to turn off screen after some minutes of inactivity using the KDE settings, right?
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08:43 | how on earth can be done then?
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08:43 | <alkisg> X can turn the screen off
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08:43 | And X runs locally
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08:43 | <markit> so I should hack xorg.conf?
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08:43 | <alkisg> If KDE asks X to turn the screen off, then sure, it makes sense
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08:44 | No, I'm saying that it might just work, depending on the tools used
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08:44 | bbl
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08:44 | <markit> the confusion arises about settings that are user-related, while OMHO should be "hardware related"
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08:46 | <markit> anyone in this channel that can tell me how he solves this issue? even in gnome, should be the same
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13:56 | <klausade> markit: one moment. I have a ltsp-client that is always on, displaying the nagios status of all our servers. There we had the same problem with the screen going into black.
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13:58 | markit: here it is, it's a four line long script that we run when the user logs in (we use kde). The content of .kde/Autostart/noblank.sh is:
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13:58 | #!/bin/sh
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13:58 | xset -dpms
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13:58 | xset s off
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13:58 | xset s noblank
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16:20 | <markit> klausade: back: thanks a lot
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16:20 | so I'd only to put in each user's home
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16:21 | <klausade> markit: you also have other places where you can put it, like in /usr/share/autostart/ i guess-
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16:21 | <markit> klausade: I'm too ignorant about the insight of kde, unfortunatly
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16:22 | I'll ask around and google a little. Thanks a lot
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16:22 | <klausade> gnome and others have pretty much the same possibilities to autorun stuff.
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16:23 | <johnny> i think i put that in the ltsp scripts directory somewhere
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16:23 | there was an equivalent for gnome that didn't involve editing the global gconf
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16:23 | <markit> johnny: is this documented in ltsp doc? Seems pretty important in school setups
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16:24 | <johnny> why is it important for schoo lsetups?
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16:24 | what's wrong with blanking?
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16:24 | <markit> expecially when used with italc or (in the future) alkisg script
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16:24 | <johnny> i always blank mine
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16:24 | italc isn't affected by blanking
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16:24 | <markit> and the screen of the teacher is sent to all children
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16:24 | <alkisg> My script isn't affected too
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16:24 | <markit> ah, did not know
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16:24 | nice to know after a day of struggle :(
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16:24 | <johnny> you mean because the students are just watching and not doing stuff so the timeout is too long?
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16:24 | <alkisg> It calls xset etc to disable the screensaver
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16:24 | <johnny> err too short
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16:25 | <markit> johnny: exactly
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16:25 | <johnny> markit, apps like totem (the movie player in gnome) use the inhibit dbus call
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16:25 | so. blame your apps :)
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16:25 | apps can tell dbus to tell the x server to not blank
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16:26 | vs just blanking globally
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16:26 | i blank mine in my cafe setup
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16:26 | people just wiggle the mouse and their in
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16:26 | <markit> johnny: never faced the issue. Yesterday while testing noticed that the ltsp client screens went blank, and thought would have been a big problem if they have the teacher's screen displayed
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16:26 | <johnny> markit, well those apps should inhibit the screensaver themselves
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16:26 | <markit> also because becomes blank after very few minutes, probably 10
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16:26 | <johnny> not all do
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16:26 | but they can
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16:26 | <markit> good to know, thanks
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16:26 | <johnny> i'm sure there are reasons why an app might not..
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16:27 | like if i'm running compile in a terminal.. my screen will blank
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16:27 | i could tell it not too condtionally
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16:27 | via dbus send with the right stuff
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16:27 | * alkisg likes the screens going blank after 10 minutes... lets the students focus on the real board when it's used | |
16:27 | <johnny> yes.. that too alkisg :0
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16:27 | it also saves power
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16:28 | <markit> alkisg: I've not yet had a look at your app, but the file dgross sent me is a sort of xml
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16:28 | <johnny> markit, this is a relatively recent development (5 years) before that there was no semi unified framework for apps to tell the system when and when not to inhibit
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16:28 | <markit> so seems your app have strings "external" to the source code
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16:28 | and should be easy to localize... or should be based upon a totally different mechanism to be "right"?
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16:29 | <alkisg> markit: you open the glade file with the glade-3 program
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16:29 | It's a UI editor
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16:29 | Something like the delphi form designer...
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16:31 | <johnny> hah.. i'm turning into a unix graybeard :(
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16:31 | <markit> alkisg: do you have the url of your program handy? and any instruction about how to "install"?
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16:31 | <alkisg> You mean the ppa?
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16:31 | sudo add-apt-repository ppa:ts.sch.gr
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16:31 | sudo apt-get update
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16:31 | sudo apt-get install sch-scripts
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16:32 | That's all, then you create the fat/thin chroot from the menus
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16:32 | <alkisg> Clients are automatically detected, no need for config files etc
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16:33 | But ... greek only, depends on dnsmasq, adds greek locale to the chroot etc, not suitable as is. That's why I'm proposing to wait 2 years until the i18n version.
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16:33 | <markit> I've already thin client chroot created... will it overwrite it? do I have to remove it first? when/how "inject" dgross translated file?
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16:33 | (I'm using dnsmasq fortunatly)
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16:33 | <alkisg> I think dgroos installed sch-client on the chroot manually
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16:34 | ..and, ask him about the "injection process", or see the #edubuntu logs, we had some hours there trying to set it up for international use...
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16:34 | * alkisg wouldn't want to go through it again until it's properly i18n :) | |
16:34 | <markit> is it split among a "server" part for visualization, and a chroot one that provides the connection to the server part?
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16:34 | <alkisg> Yes
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16:35 | The chroot part is a simple script that only takes 1 MB RAM
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16:35 | <markit> for each client?
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16:35 | <alkisg> On each client
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16:36 | <markit> fabolous low footprint
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16:36 | <alkisg> The server network backend is based on twisted, it doesn't add much overhead per client
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16:36 | <markit> how can I grab the "sources" so I can install manually?
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16:36 | <alkisg> You don't need the sources, use the ppa
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16:36 | Just don't use the chroot generation wizard
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16:37 | Use your existing chroot..
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16:37 | <markit> I see, thanks!
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16:37 | <alkisg> Here are the sources (which you won't need): http://bazaar.launchpad.net/~sch-devs/sch-scripts/trunk/
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16:38 | <markit> svn? git? mercurial?
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16:38 | <alkisg> bazaar = bzr :)
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16:39 | <markit> ah, don't know about bazaar... to be sincere, I can barely use git and nothing more
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16:39 | <alkisg> bzr pull lp:sch-scripts
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16:39 | <johnny> stupid bzr :(
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16:39 | canoncial bad :(
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16:39 | they should have used hg
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16:39 | :(
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16:39 | <markit> hg?
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16:39 | <johnny> mercurial
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16:39 | it's what mozilla uses
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16:39 | among other big projects
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16:39 | <alkisg> Why not git?
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16:39 | <johnny> bzr's only main user is launchpad
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16:39 | <markit> aren't many moving to git?
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16:40 | <johnny> well lots of canonical stuff is python.. so an importable version control system is useful
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16:40 | as a library
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16:40 | certainly many valid complaints of git for it's UI
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16:40 | and versioning
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16:40 | bzr tries to hide teh hashes
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16:44 | <markit> btw, my clients are underpower for "fat clients", do you think that run some app like "local app" is a good idea or is higly risky of messing everything?
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16:44 | like firefox, that seem to eath ram and cpu like a dog
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16:44 | <alkisg> How much ram?
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16:44 | <markit> (maybe removing flash plugin will help a lot)
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16:45 | some 256MB, most 512MB
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16:45 | well not most.. half and half
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16:45 | kde4 should run decently with 512MB, though
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16:46 | <alkisg> I'd (automatically) use thin for the 256 ones, and fat for the 512 ones
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16:46 | <markit> (my test show that 384 is the bare minimum)
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16:46 | alkisg: you told me, do you have to provide a "table", a config file that says how much ram each client (mac address) has?
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16:47 | <alkisg> No, the current code does it automatically based on the client ram
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16:47 | <markit> stunning
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16:47 | <alkisg> So you wouldn't need any config files
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16:47 | Just a fat chroot
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16:48 | <markit> are the home still in the host system, or in the fat chroot?
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16:48 | <alkisg> Host
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16:48 | <markit> and users have to be created in the host system or in fat chroot?
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16:49 | <alkisg> Host, it's ltsp as you know it...
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16:49 | <markit> fabolous... so the ONLY problem is keep in sync installed programs / versions and global kde config among host (used by the teacher and thin clients) and fat chroot
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16:49 | <alkisg> You just have to maintain 2 images (server+chroot) instead of 1 (server)
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16:50 | <markit> well, in any case is far simple than single installations for sure!
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16:51 | alkisg: last question... your "script of wonders" is going to be included in -buntu (and hope debian) distro, once i18l?
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16:51 | <alkisg> No idea
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16:51 | I'll try to push it in debian sometime in the far future, not sure if I'll be able to do it..
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16:52 | <markit> seems so good that I would ask canonical at least if can do the work asap, instead of wait 2 years
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16:52 | <alkisg> I don't think canonical wants to spend money on developing a classroom administration app
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16:53 | <markit> do you think that an ruby programmer + (debian + kde lover) like me could easely help the i18n?
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16:54 | <alkisg> Nope, pygtk knowledge would be required as the infrastructure isn't there
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16:54 | <markit> I see
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16:55 | <johnny> well.. there is ruby gtk..
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16:55 | <markit> also ruby qt
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16:55 | <alkisg> ...but that would require a complete rewrite :)
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16:55 | <markit> but I would love have alkisg work fine and be i18l
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16:56 | * alkisg too | |
16:56 | <markit> instead of "reinvent the wheel" before have at least one project workig
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16:56 | the final goal would be have the "core" and 2 interfaces, gtk and qt
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16:56 | <johnny> is the problem making the app il8n or the translations and stuff themselves?
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16:56 | <markit> instead than 2 different projects
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16:57 | <johnny> if the 2nd.. then you can use launchpad's translation service
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16:57 | <alkisg> I'd love to see a web site where local school admins can upload their lists of packages + configuration tasks, and that future classroom administration tool just asking the teacher which region he's in, and doing everything automatically for him...
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16:57 | <johnny> ifthe first, wrapping the cals is easy
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16:57 | alkisg, can't you already do that?
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16:57 | conary :)
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16:57 | err sorry.. foresight linux
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16:57 | <alkisg> We have code that installs specific packages in the chroot, greek apps for primary, secondary etc education
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16:57 | <johnny> but i woud be suprised if that didn't already exist
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16:58 | <alkisg> That's not easy to internationalize
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16:58 | <johnny> greek apps?
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16:58 | what is a greek app?
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16:58 | <alkisg> An infrastructure would need to be developed for school admins to configure their own setups, so that teachers can automatically use them
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16:58 | johnny: http://ts.sch.gr/repo/images/education-menu.png
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16:58 | Dozens of greek-only edu apps
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16:59 | <markit> and windows - wine converted, right?
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16:59 | so proprietary software :(
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16:59 | <alkisg> Flash, windows etc, yes
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16:59 | <markit> don't you feel gulty for that? lol
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17:00 | <alkisg> Nope, I just did the packaging, I didn't write the software requirements :)
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17:01 | <markit> alkisg: you are injecting proprietary software to the childrens of your country
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17:01 | <alkisg> Nope
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17:01 | I'm just making the same software that they use on windows, available on linux
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17:01 | Otherwise they wouldn't use linux
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17:01 | <markit> (btw, is only "small talk" with you, nothing serious)
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17:02 | <alkisg> There are cases (few, fortunately) where the student book uses/teaches a specific app, if that app isn't available on linux, they won't use it
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17:02 | <markit> alkisg: because there are not native sw that are as good as those ones, or because teacher are lazy and want to find the programs they are used to?
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17:03 | I ask because I'm starting to face the same problem
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17:03 | <alkisg> Because the ministry paid for those programs, and wrote books that teach them
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17:03 | So the teacher can't really select which software to use
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17:04 | <markit> "oh, I use program XXX, does it run here too?" me: "well, you can use YYY", teacher "oh, can't I use XXX? works so well, and.. 100 weak reasons"...
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17:04 | <alkisg> We're trying to persuade the ministry to develop floss software from now on, but we can't change what's already been done
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17:04 | <markit> alkisg: ok, anyway is a good news
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17:05 | I've the feeling that here in italy is the book printer that selects software to include in the book
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17:05 | <alkisg> markit: e.g. do you know of any floss program that teaches the orthodox religion?
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17:05 | Or the greek geography?
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17:05 | Etc etc
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17:06 | The ministry developed some apps, we just need to use those
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17:06 | <markit> I see
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17:06 | btw, they could provide as FOSS, but windows only, that would be a pity also
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17:06 | <alkisg> (it's usually one app for each book, and the books are distributed by the government, the teacher can't select which book to teach)
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17:07 | <markit> while gtk and qt let you create one that works in windows AND gnu/linux
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17:07 | <alkisg> If they were foss, at least we could try to make them run native on linux
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17:07 | <markit> but probably developers only use Visual Studio .NET these days
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17:07 | <alkisg> E.g. there are a lot of flash apps that could run native, but they're not foss
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17:08 | <markit> wondering if there are people here from different EU countries that can tell me about their situations
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17:08 | I'm very curoius about this subject
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17:09 | btw, ltsp server you usually deploy, is simple sata or raid10 with fast controller and write back cache?
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17:10 | because if it has to server 16-20 pc, I/O could be a severe bottleneck
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17:10 | but usually I've read about ram and cpu requirements (and gbit nick for the server)
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17:11 | <alkisg> The network is the most significant part, imho
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17:11 | We have small classrooms of up to 12 PCs, so we're just using simple PCs as servers
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17:11 | 4GB RAM, a simple sata disk, core 2 duo or similar, and a switch with at least 1 gigabit port
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17:12 | * alkisg wants to try bonding on gigabit pci-e network cards though... | |
17:12 | <stgraber> if you can, store the files on SAN exported as NFS (with a few tweaked I can get a good 250MB/s from it) and then have dual-gigabit from that to a switch with your servers, then the HDD in the server doesn't really matter (that's for centralized deployment)
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17:13 | <markit> oh, I've a 8GB ram, 4core xeon 32something, and I've the fear will be too slow! that's why I'm thinking about fat clients
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17:13 | <stgraber> alkisg: I had to start using bonding for all my appservs and file servers at the office, the disk controlers were just too fast for gigabit ;)
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17:13 | markit: for how many clients ?
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17:13 | <markit> oh, someone else alive in addition to me, alkisg and johnny! hi stgraber
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17:13 | 16 clients
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17:14 | <stgraber> 16 clients on that kind of hardware won't be an issue
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17:14 | in some cases I run 50 clients on similar hardware (though firefox is running as localapp)
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17:14 | <markit> FF is what I feart will put everything in it's kneew
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17:15 | fear
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17:15 | <stgraber> yep, one single firefox+flash can take half of what you have ;) so that's why you want it as localapp
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17:15 | <alkisg> stgraber: is there any advantage in using SAN + bonding instead of some embedded RAID, for single server setups?
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17:16 | <markit> I've simulated startup and logged all 16 clients. KDE at first log creates it's directory structure in home dir and try to "migrate don't know what". I saw 4core at 100% for some minutes and was very scared
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17:16 | <stgraber> yes, kde is an issue ;)
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17:16 | last kde we deployed was kde3 with 8.04 then we switched all our customers to gnome
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17:17 | <markit> alkisg: btw, from my experience with proxmox, forget about "on board sata raid", and if you but a sas/sata RAID board, use with BBU (battery backup) and enable write through, otherwise will be VERY slow
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17:17 | <stgraber> gnome scales quite well once you do a few config changes, currently the server I'm running with the most thin clients runs something like 100-150 concurent gnome sessions
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17:17 | and it's just a dual-quadcore-i7 (appears as 16 cores) with 24GB of RAM
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17:18 | * alkisg didn't have any disk bottlenecks so far, as the server caches most of the needed data in RAM for my small setups... | |
17:18 | <markit> stgraber: more or less, what kind of "gnome changes"? maybe I can get some tip for kde also
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17:19 | <stgraber> alkisg: depends on the controler, if you buy some actual decent controler like HP's P4xx serie, you should be good. Just forget about these cheap kind-of-RAID controlers you get on some computers.
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17:19 | <alkisg> Right, I've heard enough problems to know to avoid that :)
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17:19 | <stgraber> markit: patched glib and libc (at least for a while) to avoid having them read /proc/mounts (syncronous kernel call ...) every-time a thin client logs in
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17:20 | markit: at some point we'd have 100 process trying to access /proc/mounts at the same time, making the load go at something like 120 from time to time
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17:20 | we patched glib+libc to have them read /etc/mtab instead
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17:21 | that way we can filter it (as we mount most shares with "mount -n") and as it's an actual file, it gets cached and can be access asyncronously
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17:23 | <markit> so not gnome specific...
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17:26 | stgraber: are your's school installato of of what kind?
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17:26 | s/of of/or of
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17:26 | * markit is becoming too tired, not enough sleep does not forgive | |
17:27 | <alkisg> markit: not all ltsp installations are schools :)
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17:27 | <markit> alkisg: that's why I'm asking
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17:27 | I dubt is for office
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17:27 | since GNU/linux seems not to be able to gain "professional" usage attention
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17:30 | <alkisg> http://www.revolutionlinux.com/
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17:30 | They do deploy for offices to, afaik
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17:31 | <markit> well, you have people to migrate to OOo, abandon Outlook, have accounting programs for gnu/linux, etc
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17:31 | not an easy task
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17:32 | technically is ok, but...
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17:32 | like you that have to package wine apps
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17:32 | the "old chains" are very strong
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17:32 | <stgraber> sorry, just got back.
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17:32 | markit: I'm the main developer of ltsp-cluster at Revolution Linux
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17:33 | markit: we have 10 or so mass deployments of LTSP in schools as well as usage in public administation and companies
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17:33 | <markit> stgraber: oh! incredible people you find in irc, lol
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17:33 | stgraber: what country?
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17:33 | * alkisg adds "and the current ubuntu ltsp maintainer" :) | |
17:33 | <stgraber> markit: Canada
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17:33 | alkisg: yeah, that too ;)
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17:33 | <markit> lol, nothing more?
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17:33 | :)
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17:33 | <stgraber> a few more things but not too many LTSP-related ;)
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17:33 | <alkisg> He's also running for president, but he keeps it a secret :D
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17:34 | <stgraber> alkisg: shhh ;)
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17:34 | alkisg: btw, are you coming to BTS ?
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17:34 | <alkisg> stgraber: unfortunately no :(
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17:34 | It didn't work out....
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17:35 | <stgraber> doh ... would have been great meeting you there
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17:35 | <alkisg> Yeah, I was looking forward to meeting you all in person... :-/
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17:35 | * alkisg hopes for a EU bts some time in the future :) | |
17:35 | <markit> stgraber: I see you have some eeepc pictures... had problems to make them boot properly
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17:36 | I've the feeling that Gbit pxe firmware does not work good with ltsp
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17:36 | <stgraber> alkisg: sadly there aren't many of us in Europe (anymore ;))
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17:36 | <markit> (like did not worked with some fujitsu pc I'm using, had to install 1.0 and not 1.0.1 gPXE that makes nic work at 100mbs)
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17:37 | <alkisg> markit: try the current git, 1.0.1 has some known problems. If that doesn't work, ask in #etherboot
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17:38 | <markit> alkisg: is there something I can ask and about you don't know the answer? :)
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17:39 | <alkisg> "what's the meaning of life"?
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17:39 | ...oh no I know that, "42"...
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17:39 | :P
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17:39 | <markit> alkisg: I'm scared to ask, since I suspect you know the answer...
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17:39 | lol
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17:39 | <alkisg> (from the hitchiker's guide to the galaxy... nice book)
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17:39 | <markit> I know :)
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17:40 | btw also "on board pxe" fails
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17:40 | so I think could be a "ltsp side" problem, not pxe one
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17:41 | and works with 1.0 because has not e1000 driver
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17:41 | so probably runs the nic at slower speed in some compatibility mode
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17:41 | just my guess
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17:42 | <alkisg> LTSP isn't related to the pxe code, it just uses the tools
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17:42 | So if there's a bug, it's either in the nic rom, in dnsmasq, or in tftpd
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17:43 | <markit> alkisg: sure, I use "ltsp" in the wrong way
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17:43 | I always mean "server side"
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17:44 | I understand why johnny was upset yesterday, just I don't realize it
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17:44 | <alkisg> A wireshark dump would reveal the problem...
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17:44 | <markit> when I write
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17:44 | I've tried
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17:44 | seems that the packets flow, but very slow
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17:44 | I don't see retransmission or whatever
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17:44 | just a slow flow of packets
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17:44 | <alkisg> Which part is slow? The server or the client?
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17:44 | <markit> maybe I could try again
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17:45 | I've tcpdumped the server side
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17:45 | <alkisg> E.g. when the server receives a dhcp request, it should answer in a few msec
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17:45 | <markit> dhcp is very fast
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17:45 | the slow part is at
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17:45 | "loading vmlinuz..."
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17:45 | that takes, i.e. 4 minutes
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17:45 | <alkisg> That's tftp + pxe stack on the nic
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17:46 | <markit> then the stage "initrd.img..." takes another 4-5 minutes
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17:46 | <alkisg> Again, a dump + a bug report against the tftp server will get you on your way
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17:46 | <markit> and after 10min you are in gdm, you login and you are fast as hell (very fast)
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17:46 | <alkisg> If it proves to be a problem on your nic, then you should contact the laptop manufacturer :)
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18:06 | Anyone knows if udevadm is there on debian initramfs?
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18:07 | <markit> I'm on debian sid, if is something you can tell me how to check, I'll be happy to help
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18:11 | <alkisg> mkdir /tmp/initramfs && cd /tmp/initramfs && gunzip -c /initrd.img | cpio -i -d -H newc --no-absolute-filenames && find . -name udevadm
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18:37 | <alkisg> vagrantc: hi, is udevadm there on the debian ltsp initramfs? I think we need a `test -b /dev/nbd0 || udevadm settle` before running nbd-client...
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18:44 | * vagrantc looks | |
18:46 | <alkisg> mkdir /tmp/initramfs && cd /tmp/initramfs && gunzip -c /initrd.img | cpio -i -d -H newc --no-absolute-filenames && find . -name udevadm
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18:46 | <vagrantc> lsinitramfs
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18:47 | <vagrantc> alkisg: i see sbin/udevadm
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18:47 | at least on squeeze
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18:47 | <alkisg> Thanks, that's fine
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18:48 | I'll tell some people to test that fix on their systems that experience the nbd problem on monday...
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19:02 | <markit> alkisg: sorry, was away and missed your request
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19:02 | I've seen vagrantc catch it thoug, fortunatly
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20:44 | <highvoltage> can anyone else access the BTS 2010 wiki page fine?
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20:45 | chromium tells me that the page refers to itself in a loop and then stops the page
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21:39 | <jconlon> I am struggling to get an HP t5135 to work. It has a via chipset but hen I try to use XSERVER= via or openchrome it freezes. Only works with vesa but slow tho.
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21:41 | <pmatulis> re local app (say firefox), why does one need to specify SEARCH_DNS parameter in lts.conf? why isn't normal dhcp provisioning (domain-name-servers) sufficient?
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21:46 | <vagrantc> pmatulis: because it wasn't fixed until very recently.
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21:46 | <pmatulis> vagrantc: ah, a bug
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21:47 | vagrantc: do you know which version of LTSP has the fix? or which release of ubuntu will have it?
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21:48 | <vagrantc> pmatulis: should be fixed in debian 5.2.4-2
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21:48 | pmatulis: added a patchc from bzr.
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21:52 | <pmatulis> vagrantc: darn, ubuntu 10.10 will have 5.2.4-0
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21:53 | <vagrantc> pmatulis: should be able to get it patched to support it
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21:54 | stgraber: you should apply the patch i have for debian to support dhcp's dns server configuration
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21:54 | stgraber: er, the patch i have in debian's ltsp...
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21:54 | <pmatulis> vagrantc: yeah. now i wonder why it took so long to fix said bug. seems SEARCH_DNS has been around a long time
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21:56 | <vagrantc> i think, up until recently, most LTSP installs didn't need DNS
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21:58 | <pmatulis> vagrantc: ah right. local apps are recent
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