local device (USB-stick) and users groups problem

Ismail ISLEYEN isleyen at comu.edu.tr
Wed Apr 16 14:32:02 BST 2008



Charles Austin yazm?s,:
> 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.
>
>   
yes, you are right, I hope it will be fixed
>>  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.
>   
yes, I have this problem when I create a user using edubuntu interface. 
While I create a user on console there is no problem.* *
>   
>>  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
>   
my problem is not about Vnc but about getting response lately. sometimes 
the system crashs
>   
>>  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
>   
The speed of uplink from server to network is GB. The problem is not 
specific to certain clients, they just happen any client after 25th.
> attempt log in?
>
> Regards,
> Charles
>
>
>   
---------------------------------------
Jean-Francois CLEMENT;

do you have every users members of group "fuse" in /etc/group ?

yes every user is a member of fuse group

---------------------------------------
Richard Doyle;

Sounds like the bug in
https://bugs.launchpad.net/ubuntu/+source/ltsp/+bug/160420
and related reports. According to Oliver the fix is in Hardy, and can be
applied to Gutsy by commenting out the following line
in /usr/sbin/ltspfsmounter on the server:

env['DISPLAY'] = 'localhost:10.0'

The comment you have mentioned is already there;

---------------------------------------

Thanks for all

-- 
Uzm.Ismail ISLEYEN
C.O.M.Ü. Kut. ve Dok. Dai. Bsk.ligi
Elektronik Kaynaklar -- Otomasyon
Tel: (286) 218 0018#1989
isleyen at comu.edu.tr

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