Problems with Edubuntu thin client setup in school...

[Jeff]

On 18 Jun 2011, at 5:15 AM, Leena wrote:

> Hi,
>
> We are trying to setup Edubuntu 10.04 in school and get image on  
> thin client machines. Edubuntu installation on server and LTSP  
> installation goes fine.
> When try to connect client machines doesn't go beyond connection  
> window and shows blank screen. Details of the setup and hardware and  
> changes we have done so far are listed below......sorry it's a long  
> mail.....this issue is very urgent for us and hoping that someone  
> would have done similar setup or have come across similar issues  
> might able to help us....
>
> questions: After the setup on server, as for client machines we are  
> unable to receive response when we ping clients IP from server  
> (client machine, server and hub are on). How to check if dhcp is  
> running?


ps -A | grep dhcp


>                 on most documentations on net I have read for thin  
> client setup they change network/interfaces file and connection to  
> 'STATIC' instead of
> 'dynamic' is it required?
>
> Details:
>
> Hardware used:
> Server-HCL computer-2GB RAM, 160GB Hard disk, two network cards
> Clients: connected to 10 Thin Clients connected to server on LAN, no  
> Internet connection here. Client machines has connection window- 
> Winbee connection manager for login.
>
> What we did so far:
> Installed Edubuntu 10.04 on server. After it was over when the pop- 
> up appears for restart now or continue testing (to install LTSP).
> At that we clicked on 'Continue Testing'- as we wanted to install  
> LTSP (Linux Terminal Server)
> For network connection eth0 was shown as used, so we selected-eth1  
> here.


How many network interfaces do you have?

I noticed when I installed 11.04 last week (for the first time) that  
it defaulted to eth1. I knew that I only had one interface, so I set  
it to eth0 and everything went better than expected. :)


> after LTSP was configured we did reboot computer, and made couple of  
> changes to config files as follows
> Enabled the XDMCP Server by (using N-XDMCP connection type on  
> clients for connection)
> copied  usr/share/custom.conf file to /etc/gdm/custom.conf and added  
> below lines below [xdmcp] option.
> 				[xdmcp]
> 				Enable=true
> 				DisplaysPerHost=2
>
> 				[chooser]
>
> 				[security]
>
> 				[debug]
> Restart GDM
>
> Then edited our interfaces file: /etc/network/interfaces to following
> auto lo
> iface lo inet loopback
>
> auto eth1
> iface eth1 inet static
>   address 192.168.0.254
>   netmask 255.255.255.0
>   broadcast 192.168.0.255
>
> and finally the /etc/ltsp/dhcpd.conf     dhcpd.conf file to following
> #
> # Default LTSP dhcpd.conf config file.
> #
>
> authoritative;
>
> subnet 192.168.0.0 netmask 255.255.255.0 {
>     range 192.168.0.20 192.168.0.250;
>     option domain-name "example.com";
>     option domain-name-servers 192.168.0.1;
>     option broadcast-address 192.168.0.255;
>     option routers 192.168.0.254;
> #    next-server 192.168.0.1;
> #    get-lease-hostnames true;
>     option subnet-mask 255.255.255.0;
>     option root-path "/opt/ltsp/i386";
>     if substring( option vendor-class-identifier, 0, 9 ) =  
> "PXEClient" {
>         filename "ltsp/i386/pxelinux.0";
>     } else {
>         filename "ltsp/i386/nbi.img";
>     }
> }
>
> rebooted the server.
> and in client machines, added connection at 'Winbee connection  
> Manager'- (HCL client comes with these)
> Configuring/Setting up HCL Winbees-4000BVX Thin Clients
> for new OS connection, add connection.on top there are two options,
> 1. configuration
> Name:connection name here (EDubuntu)
> Type:N-XDMCP  click-ok
> Description → Edubuntu
>
> Mode → Direct
>
> Server Name → 192.168.0.254
>
> XDMCP on → Second Console
>
> 2. connection:click on setup to add Network to check ip address for  
> client
> save. and reboot clients.
>
> After rebooting client machine, when I select my newly added  
> 'Edubutu' connection and click 'connect'. It shows blank screen with  
> white mouse cross mark.
>
> The link here: http://www.edubuntu.org/documentation/ltsp-live- at  
> the very bottom of page says " you simply have to set the connected  
> workstations to boot from the network.  by going into BIOS". we  
> haven't done that as hcl clients has Winbee manager to go thr'  
> connection process. Not sure if we should have really.
>
> Can anybody give any clues to what might have gone wrong?
>
> Thanks,
>
> -- Leena Mulye
> Technical Project Associate
> IT for Change
> In special consultative status with the United Nations ECOSOC
> www.ITforChange.net
> Tel:+91-80-2665 4134, 2653 6890. Fax:+91-80-4146 1055
> Have you heard about the free and open source software Visit http://www.public-software.in/
>
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>
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--
Jeff Brown

Tel:+27-74-101 5170
Fax:+27-86-532 3508
www.wildcoast.co.za



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