IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 18 June 2016 (all times are UTC)
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| 08:29 | <komunista> hi all
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| 08:30 | please, I am using the LTSP on Debian wheezy for long time
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| 08:31 | some time ago we bought Intel NUC and I have problem with its VGA card
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| 08:32 | <alkisg> komunista: wheezy? isn't it time to upgrade it yet?
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| 08:32 | <komunista> it works, but always only once: the first LDM fails, after restart second attempt success, and all other fails, until I unplug the power adapter
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| 08:32 | I afraid to update, because when I did last update to wheezy, the other thin clients are much slower
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| 08:33 | I tried to compile new xserver-xorg-intel drivers, but it doesn't helps
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| 08:33 | I tried to upgrade the kernel to 3.16, but doesn't helps too
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| 08:34 | is here some trick for this type client, please?
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| 08:38 | <alkisg> I would suggest that you try a stretch chroot and check if it's slow or not
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| 08:39 | If the client works fine there, then no need to bother backporting newer drivers to old distributions, I don't think you'll find any kernel or xorg developers interested in helping you there
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| 08:40 | In general, such issues need a newer kernel and xorg
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| 08:42 | <komunista> update the chroot is not a problem, the slowing is due applications
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| 08:43 | but I remember that I read somewhere, that running chroot and real server on different versions is not good idea
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| 08:43 | <alkisg> If you're using thin clients, then yes it might be an option to use a stretch chroot in your wheezy or whatever else you have, server
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| 08:43 | From some version and on, ltsp, nbd-server etc are quite compatible with newer versions
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| 08:44 | It depends on your current ltsp and nbd-server versions
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| 08:44 | Which versions do you have of those packages?
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| 08:44 | E.g. I'm able to run ubuntu 12.04 chroots to 16.04 servers, and vice-versa, but I do have a newer ltsp package
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| 08:46 | Btw, new intel nuc clients should be ltsp fat clients, not thin clients :)
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| 08:53 | <komunista> ltsp-server -> 5.4.2-6+deb7u1
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| 08:53 | nbd-server -> 1:3.2-4~deb7u5
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| 08:54 | I don't want fat clients, I want software at one place, it is a school class
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| 08:54 | <alkisg> We have 1000 schools here with thin and fat clients and the teachers maintain the software graphically in one place without chroots
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| 08:54 | What you're doing is more difficult, not more easy
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| 08:55 | !ltsp-pnp
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| 08:55 | <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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| 08:55 | <alkisg> It works in debian fine as well
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| 08:55 | And schools need browsing and multimedia, it's a pitty if you don't take advantage of the nuc cpu speed for that
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| 08:56 | So anyway back to the upgrading questions, are you using nfs or nbd?
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| 08:56 | <komunista> when I start to play with NUC, I noticed, that the last change on chroot was in 2008 :)
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| 08:56 | <komunista> I am using nbd, versions see above
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| 08:57 | <alkisg> OK, because newer versions of nfs has some issues with newer kernels
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| 08:57 | <komunista> not 2008, 2012, sorry
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| 08:57 | I never used nfs for ltsp
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| 08:58 | <alkisg> (we're not using chroots at all here, we're installing software using the gui)
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| 08:58 | So, you should be able to use a stretch chroot in your wheezy server if you want
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| 08:58 | But my advice is, go for ltsp-pnp
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| 09:00 | <komunista> I have only one NUC and others are slow 486 clients with low memory, if I will have more NUC than others, I can try this but now for one machine...
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| 09:00 | <alkisg> 486? I can't believe that
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| 09:01 | <komunista> I don't remember exactly, it is some years when I install them, I know that they are 800 MHz CPU and 256 MB RAM
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| 09:02 | <alkisg> Those will make fine thin clients with ltsp-pnp
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| 09:02 | <komunista> and horrible VGA, something as chrome
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| 09:03 | <alkisg> We have schools that use ltsp-pnp with 400 mhz, 128 ram here
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| 09:03 | <komunista> when the NUC starts correctly, it is amazing when I compare with these old machines
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| 09:04 | bigger resolution (I have forced low resolution due performance), NUC works on full 1280x1024 great
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| 09:04 | only starting :(
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| 09:06 | <alkisg> Having some fat clients increases the performance of thin clients because it leaves more network bandwidth available
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| 09:06 | Also, use 16 bit color depths for thin clients, and LDM_DIRECTX
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| 09:06 | <komunista> but back, do you think that it can be safe to mix stable chroot with old-stable server?
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| 09:07 | <alkisg> Finally, use the epoptes network benchmark tool to verify that your network speed is what you expect; it's very frequently a source of "unknown" performance issues
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| 09:07 | It should work with only 1-2 manual changes, yes
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| 09:09 | <komunista> I did tray epoptes some years ago, it doesnot works on all c lients (all was the same), someone from LTSP team was logged into my network (I forget who), but we cannot find source of problem...
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| 09:10 | <alkisg> Maybe it was me
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| 09:10 | We solved a lot of issues with bad clients in the last years, I haven't seen epoptes failing recently
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| 09:11 | E.g. one problem that might be what you're describing, was the cmos battery failure on clients causing bad dates, which then caused expired certificates
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| 09:11 | So the correct solution would be to replace the batteries,
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| 09:11 | <alkisg> and the epoptes side of the solution was to generate a certificate valid since 1970
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| 09:13 | <komunista> OK, I will try the jessie chroot in this week, and then I return ;)
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| 09:13 | thanks for info
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| 09:13 | <alkisg> Why not stretch?
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| 09:14 | It's a chroot, it's stable enough for a chroot...
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| 09:14 | It'll last you longer that way
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| 09:14 | <komunista> I will take look into ltsp-pnp in more depth
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| 09:14 | uff, then OK I will try strech, as I mentioned I am fearing ;-)
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| 09:15 | regards
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| 09:15 | and thanks again
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| 09:15 | <alkisg> You're welcome
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| 12:34 | <grobi> is it possible to choose from several images for example 32 or 64 bit - at (pxe) start process
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| 14:32 | <alkisg_android> grobi, yes, with either dhcp, per mac, or via pxelinux ifcpu module
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| 14:33 | but usually we use one i386 chroot for all clients
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| 15:05 | <grobi> thanks alkisg,.. the image is thus always linked to the client? it is not possible to select between 32bit and 64bit on startup? do I understand this in the right manner...
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| 16:55 | <alkisg_android> grobi, you can hardcode the mac, or use ifcpu for automatic selection, or use a pxe menu, or a pxelinux menu
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| 16:55 | 4 methods :)
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| 16:56 | but why not use i386 anywhere? it supports up to 64 gb ram...
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| 17:32 | <grobi> thats right :-) I just want to test something...
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