New thin client Edubuntu lab

Barb Tabor btabor at
Tue Mar 4 13:10:00 GMT 2008

edubuntu-users Digest, Vol 22, Issue 5Hello. We are going to be purchasing 30 new computers and a server for a new Edubuntu thin client lab.
I am wondering if anyone can make suggestions on what the best equipment would be to do this.
The lab will mostly be used by grades K-5 using the Internet for research, educational activities, word processing/printing and Renaissance Place. 
Any suggestions are welcome.

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  To: edubuntu-users at 
  Sent: Tuesday, March 04, 2008 7:00 AM
  Subject: edubuntu-users Digest, Vol 22, Issue 5

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  Today's Topics: 

     1. Re: eth1: too many iterations (6) in nv_nic_irq (jbarry) 
     2. Re: Looking for Case Studies (Joseph Hartman) 


  Message: 1 
  Date: Tue, 4 Mar 2008 08:41:49 +0400 
  From: jbarry <jbgonzaga at> 
  Subject: Re: eth1: too many iterations (6) in nv_nic_irq 
  To: "Edubuntu Users Group" <edubuntu-users at> 
          <86f3b6c00803032041l1c008ee0k7962cea8bf53a946 at> 
  Content-Type: text/plain; charset="iso-8859-1" 

  Sorry but maybe I was not so clear, the problem disappeared when we made the 
  clients into full workstations and not use LTSP. 


  On Tue, Mar 4, 2008 at 8:36 AM, jbarry <jbgonzaga at> wrote: 

  > Hi John, 
  > We were not able to fully solve the problem, since the school opted to 
  > make individual workstations out of the 'fat clients' (they were fairly 
  > powerful). But the max_interrupt number that worked for me was 16 but I 
  > would still hit the error when too many students access flash game sites. 
  > I guess the best way for others to not encounter this problem is don't buy 
  > this kind of lan card or maybe create a list of cards that gives this 
  > problem. 
  > Anyway, I am not connected with the project anymore, just lurking here to 
  > be updated with whats the latest. 
  > regards! 
  > jbarry 
  > On Tue, Mar 4, 2008 at 6:16 AM, Jim Kronebusch <jim at> 
  > wrote: 
  > > On Mon, 3 Mar 2008 16:12:47 -0800, john wrote 
  > > > Hi all, 
  > > > 
  > > > I sent this as a reply to an old topic about firefox, but I decided 
  > > > since this is not a firefox question, I'd send 
  > > > it again with a  more pertinent subject line. 
  > > > 
  > > > Problem: 
  > > > 
  > > > Recently we've had our edubuntu server become unresponive when we have 
  > > > 20 or so users on it. We are running a two dual cores and 8 gigs of 
  > > > ram so I don't think the CPU or memory is the problem. 
  > > > 
  > > > When I look at syslog or do dmesg I  see "eth1: too many iterations 
  > > > (6) in nv_nic_irq." these are typically the last messages logged right 
  > > > before my server locks up and needs a hard reboot. 
  > > > I see folks ran into this problem last August. 
  > > > 
  > > >  I was wondering if jbarry (the person who first reported this 
  > > > problem) ended up merely replacing the nics or did anyone  go with 
  > > > creating a file called  "/etc/modprobe.d/forcedeth" and putting 
  > > > "options forcedeth max_interrupt_work=10" in it. Did it work? 
  > > > 
  > > >  I am trying to decide which 
  > > > course to take and I'd appreciate any ideas folks could give me. 
  > > 
  > > Read this thread, long read but it might give you some insight: 
  > > 
  > > 
  > > 
  > > 
  > > It looks like they are attributing this all to a problem between kernel 
  > > versions and 
  > > certain motherboards. 
  > > 
  > > Jim 
  > > 
  > > -- 
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  > > 
  > > 
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  Message: 2 
  Date: Mon, 3 Mar 2008 22:12:47 -0800 
  From: "Joseph Hartman" <jlhartman at> 
  Subject: Re: Looking for Case Studies 
  To: edubuntu-users at 
          <db28b8ae0803032212t712a789atdbbd7f328b358db2 at> 
  Content-Type: text/plain; charset="iso-8859-1" 

  Hi Alexander, 

  I am currently in the middle of deploying an Open Learning Lab with Edubuntu 
  at my school (as I know are a few others on the list) so I don't have a lot 
  of answers for you at this point. Give me a month or so and hopefully that 
  will change. You can see what I've done for adding Edubuntu MiniLANs to 
  individual classrooms from my presentation slides at though. 
  This is something I've been rolling out since about October and the slides 
  tell the story down to the rough budget. The situation at my school is 
  probably different from your site as I am forbidden from touching anything 
  inside of the walls and had to get creative with servers and clients, but 
  you'll see what I mean on the slides. Let me know if you get a questionnaire 
  together or need further clarification. Cheers! -joe 

  From: "Alexander Hanff" <core.ldf at> 
  > To: edubuntu-users at 
  > Date: Mon, 3 Mar 2008 13:45:26 +0000 
  > Subject: Looking for Case Studies 
  > Hello, 
  > I am currently working on my final year project for my degree and I am 
  > doing a feasibility study for a local client on setting up an Open Learning 
  > Lab using Thin Clients, Edubuntu and LTSP. 
  > I would like to present some case studies as supplementary research to 
  > support the study so I am looking for anyone who has deployed a similar 
  > project in schools and training centres (or training departments in a 
  > business) to tell me about their experience.  Information I would like is as 
  > follows: 
  > Initial Goals of your Project. 
  > Budget (if possible, I know this might be construed as sensitive data). 
  > Size of deployment (number of thin clients, servers, network equipment). 
  > Hardware Specification for above. 
  > Training Needs (to use the new system) 
  > Pit Falls (did you have any problems which were not anticipated during the 
  > project plan) 
  > Was the project successful (did you meat your original goals, if you had 
  > to make compromises where were they and what was the overall effect) 
  > Any other data which you may feel is important, please feel free to 
  > include. 
  > You can either email on core.ldf at or just reply to this list (as 
  > I am sure the info will be useful to others in the project planning stage) 
  > I may setup an online questionnaire later this week as well for people to 
  > complete. 
  > Thanks for your time. 
  > Alexander Hanff 
  > University of Cumbria 
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