client specific problem

[Valerio Pachera]

2012/12/3 John Hupp <edubuntu at prpcompany.com>:
> Are you also on Quantal, or something older?
no, ubuntu 12.04.
(I'm testing on two server: edubuntu 12.04 and ubuntu 12.04 where I
installed ltsp-standalone)

> I'm using the LTSP-PNP setup with a single NIC rather than the standard
> LTSP5 setup with two NIC's.  You?

Two nic's. I dindn't read abount LTSP-PNP yet. Sounds interesting.

> I'm using the default network-manager configuration to configure my NIC
> rather than the older approach with /etc/network/interfaces.  You?

I prefered to remove network-manager and use /etc/network/interfaces.

> I have not compiled any information yet about the chipsets, etc., from
> different clients that work or don't work.  You?

No, I didn't.

> I was thinking about reinstalling Lubuntu Quantal to see if this happens on
> a fresh installation, perhaps on a test server.  Have you tried that?

Yes. And I lost a lot of time because I thought was my mistake on the
new installation till I tried the other two working clients.
I found the solution, or almost:
--- disable nbd compression! ---

I rememer I read about random issues in the past edubuntu
verions...and it seems they are still there.
  https://help.ubuntu.com/community/UbuntuLTSP/FatClients#Reenabling_NBD_compression
So, be sure that you set
  NO_COMP="-noF -noD -noI -no-exports"
in
  /opt/ltsp/images/i386.img

Note: i use amd64 instead of i386.
I confirm once again that the boot problem is specific for some client/chipset.