Submit Hint Search The Forums LinksStatsPollsHeadlinesRSS
14,000 hints and counting!

Prevent Black Displays On Managed Clients OS X Server
There is a problem with managed clients and external displays: The user (a high school student, for example) can change the display to an unsupported resolution/frequency, rendering the display useless. When this happens, it's broken for that user on that machine, because of the By Host preferences folder. (What's with that folder anyways? I mean, why?) I know there is that warning and confirmation that will auto-revert, but sometimes it doesn't warn, when it 'thinks' it will work. Anyways, the kids manage to make the display black.

You can always lock out the Displays prefpane with managed preferences, but they can still switch it with the menu extra. So the simple solution is to take away read access for "others" on the menu extra:
sudo chmod 750 /System/Library/CoreServices/Menu Extras/Displays.menu/
[robg adds: This older hint explained one way to recover from invalid resolutions. I'm not sure if it's still applicable or not...]
    •    
  • Currently 1.67 / 5
  You rated: 4 / 5 (9 votes cast)
 
[6,891 views]  

Prevent Black Displays On Managed Clients | 5 comments | Create New Account
Click here to return to the 'Prevent Black Displays On Managed Clients' hint
The following comments are owned by whoever posted them. This site is not responsible for what they say.
Prevent Black Displays On Managed Clients
Authored by: jjardoino on Sep 05, '06 01:43:18PM

"You can always lock out the Displays prefpane with managed preferences"

Could you tell how you do that ?



[ Reply to This | # ]
Prevent Black Displays On Managed Clients
Authored by: bdog on Sep 05, '06 03:34:40PM

Open Workgroup Manager. Login to your directory server. Select either a user, workgroup, or computer list. Click on "Preferences" in the toolbar. Click "System Preferences". Manage "Always" and make sure "Displays" is unchecked.



[ Reply to This | # ]
Prevent Black Displays On Managed Clients
Authored by: sapridyne on Sep 05, '06 04:51:46PM

Actually, don't even need a directory server. Install the ServerAdmin tools on the Mac, connect to the localhost (or 127.0.0.1) as an admin, and you can either manage preferences by user, group, or computer.



[ Reply to This | # ]
Prevent Black Displays On Managed Clients
Authored by: digitol on Sep 06, '06 02:14:31AM

Could you just Command drag the display meu item, and poof/erase it. Or uncheck "show displays" in the prefpane. ??



[ Reply to This | # ]
Prevent Black Displays On Managed Clients
Authored by: bdog on Sep 07, '06 12:49:44PM

Yes, but they can always get it back if they know how to find the "Menu Extras" folder and double click it.



[ Reply to This | # ]