AMD64 as server...but LTSP clients complain about not being amd64?

guillermo gromerotw at
Wed Aug 23 02:03:15 BST 2006

You've put forward a great question. When I first
installed edubuntu on an AMD64 I face the same
problem. All my thin clients are 368, what can I do?
It's suppose that LTSP is going to work on old thin
Luckily the solution is very simple. All you have to
do is reinstall LTSP (Download it from the LTSP home
/opt/ltsp/i386        Here should be your new
/tftpboot/lts         the boot files. 
I'm using vmlinuz- not pxelinux.0

Correct /etc/ltsp/dhcpd.conf to your new settings
filename "/lts/vmlinuz-";
option root-path "";

Edit /etc/inetd.conf
Look for the line
tftp           dgram   udp     wait    root 
/usr/sbin/in.tftpd /usr/sbin/in.tftpd -s

comment this line(#) or correct it to:
tftp           dgram   udp     wait    root 
/usr/sbin/in.tftpd /usr/sbin/in.tftpd -s /tftpboot

Reset your PC. I don't know how to activate this
service manually.

Use ltspcfg (/usr/sbin)
 Create /etc/exports entries
Create /etc/hosts entries
Create lts.conf file

sudo gdmsetup
remote->style->same as local

Reboot your pcs server and the client and log in.
In spite of little problems it's working fine for me.
The real situation is a classroom with 8 pcs, all
working with edubuntu. The oldest client is a celeron
May be there are better ways to do this. I would like
to hear from that.

--- Vern Graner <vern at> wrote:

> Ok, so I have an AMD64 3500 processor based server
> running Edubuntu 6.06 
> natively installed on the hard drive. I used the
> AMD64 ISO media so as 
> to get maximum performance from the AMD processor.
> I then setup a little Dell Optiplex 800mhz PIII
> machine to use PXE and 
> remote boot from the server. It gets an address via
> DHCP, then it spits 
> out an error:
> "This is not an amd64 machine. Please install the
> i386 version of Ubuntu"
> This is perplexing, as operating as a Terminal
> server is resource 
> intensive, I had assumed that using the AMD64
> version of edubuntu would 
> be appropriate to obtain max performance from the
> server hardware.
> So, before I do a wipe and reinstall of the amd64
> server with the i386 
> iso, is there a way to get the server to give out
> the i386 image via PXE?
> TIA! :)
> Vern
> -- 
> Vern Graner CNE/CNA/SSE    | "If the network is
> down, then you're
> Senior Systems Engineer    | obviously incompetent
> so why are we
> Texas Information Services | paying you? Of course,
> if the network
>        | is up, then we
> obviously don't need
> Austin Office 512 328-8947 | you, so why are we
> paying you?" �VLG
> -- 
> edubuntu-users mailing list
> edubuntu-users at

Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 

More information about the edubuntu-users mailing list