local device (USB-stick) and users groups problem

[Charles Austin]

On Tue, Apr 15, 2008 at 10:09 AM, Ismail ISLEYEN <isleyen at comu.edu.tr> wrote:
> Hi,
>
>  I have installed Edubuntu 7.10 on Dell Poweredge 2800 server (Xeon 3.6
>  Ghz x 2, 12 GB Ram, 146 x 4 Hdd) in computer room. There are 40 HP T5000
>  (T5525) clients to connect to the server. I have an urgent problem to be
>  solved as soon as possible. I would appreciate any help.
>
>  The problem is as follows:
>
>  To sum
>
>  1. USB flash drive or "local device" is active only in the first user,
>  others cannot use USB flash drives. For example while one who logs in
>  with thin1 can use USB flash drive, other users  who loged in later
>  cannot use USB flash drive. I tried this in different accounts and
>  clients but no way.

This is a known bug in 7.10.  I have tried several different fixes,
but none seem to work.  Hopefully Hardy will fix this.

>
>  2. The group of users which I configure through graphic interface
>  apeears as thin2 after the second user. Is it normal?
>         user       group
>         thin1      thin1
>         thin2      thin2
>         thin3      thin2
>         thin4      thin2
>         .....       thin2
>
Are you talking about the Add User interface in Edubuntu?  Each user
normally defaults to its own group.

>  3. When 25 users are logged in, the usage of RAM is 30%, and of
>  processor is 45% but I cannot use student control panel. What is the
>  possible reason for this?
>
Take a look at this link, you have to do a few things to get it working:

 https://wiki.edubuntu.org/InstallX11VncOnLtspClients

>  4. With 25 users logged in some users have "gnome-desktop-manager" error
>  and cannot open desktop. Although I deleted all files in user folder and
>  removed them from tmp folder, the system gives the same error. What can
>  you suggest as solution?
>
What type of network are you running?  What is the speed of the uplink
from the server to the network?  Are the problems specific to certain
machines, or do they happen regardless of which machine is the 26th to
attempt log in?

Regards,
Charles