> 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