24 Jun
2013
24 Jun
'13
7:09 p.m.
Hi,
I am not sure I am writing to the right list, but this is the only place
where I found anything about the aforementioned dialog.
I am trying to create a lockdown environment using Trinity Desktop and
Ubuntu 12.04LTS. It is all good and fine except that after the first login
if I press CTRL+ALT+DEL the dialog appears and makes logging of,
restarting
the machine possible, which are some things I want to deny users.
However if I log out and log in again the same key combination does
nothing. I tried comparing configurations before after without success. I
added new users test1, test2 and after reboot logged in using test1 then
test2, skipped the wizard both times. In case of test1 the dialog appeared
upon CTRL+ALT+DEL in case of test2 it did not. Even for the user with
lockdown profile the same rule applies, after first login dialog appears,
second and subsequent(tried 4 times) logins no dialog.
Is this a bug or am I missing something? Is there a way to turn this thing
off totally?
3.5.13.1 has known problems with the Secure Desktop Area dialog. You can
disable it completely if you disable all SAK (Ctrl+Alt+Del) capability on
the system, though I don't know if this would be an option for your
environment. The development version of TDE provides a checkbox to
disable SAK functionality in the TDM control center module, though I don't
remember if that checkbox is available on 3.5.13.1 or not.
Note that the Secure Desktop Area dialog uses normal DCOP calls for
shutdown/restart, so if those actions are allowed from the Secure Desktop
Area dialog, then the user would likely be able to initiate those same
actions from a terminal with DCOP (or possibly even with kdcop if
available).
Hope this helps!
Tim