Permissions problem in displaypolicyd

I'm having a very strange problem with Yosemite 10.10 (14A389) on my MacBook Pro (13-inch, Mid 2009). Waking from sleep the monitor receives no signal.

The only problems I have come across is a few permission errors:

User differs on “private/var/db/displaypolicyd”; should be 0; user is 244.

Group differs on “private/var/db/displaypolicyd”; should be 0; group is 244.


sudo chown -R root /private/var/db/displaypolicyd && sudo chgrp -R wheel /private/var/db/displaypolicyd

or

sudo diskutil repairPermissions /


After repairing permissions problem reappears after a reboot.

MacBook Pro (13-inch Mid 2009), OS X Yosemite (10.10)

Posted on Oct 23, 2014 2:39 PM

Reply
99 replies

Apr 28, 2015 4:37 PM in response to lplacencia

I guess they can just take any of their current MacBook, install there any fresh Yosemite and woila - the bug is there. Pretty sire Apple devs know about this bug, but have no time to fix it. So yeah reporting can speed up bigfix.


Don't remove displaypolicyd, it won't help, but will make more problems in future. Also fixing permissions won't help sometimes and sadly not permanent.

Apr 29, 2015 5:41 AM in response to mjoshea148

I can't tell. Probably someone who knows what these files do may say.

By the way a friend whose MBP (late 2008) updated to 10.10.3 and works perfectly said me that his system has also an empty displaypolicyd folder.

I tried this with everything unplugged just after a clean install of 10.10.2. Unplugged from external monitor I setup my mac and only at the end of the process I plugged in my Samsung monitor using an apple adapter (thunderbolt to VGA).

After all I think that 10.10.3 flashes the graphics chip with new drivers otherwise the problem with displaypolicyd permissions should not be there after a clean install of 10.10.0, 10.10.1 and 10.10.2 updates.

May 3, 2015 7:44 AM in response to lplacencia

I might be suffering from this problem as well. I have a mid-2010 iMac with an ATI video card inside and I have connected (extended desktop which I use to watch and stream videos) it to my HD Ready Sony LCD-TV via an HDMI cable and Mini Displayport adapter. I updated to 10.10.3 and then installed the supplemental update having to do with the video driver. Suddenly my iMac lost all ability to recognize my Sony. I checked all the cables and all the devices. Nothing. I ran Onyx Automation and did SMC/PRAM resets. Nothing. I then found out that this seems to be a common problem, especially to those who have older Macs with ATI video cards. Right now I'm waiting for someone to come up with fix, be it Apple and or someone with a temporary hack fix. I really don't want to do a clean install and then end up with 10.10.2 as it would take a lot of work (unfortunately I only had a SuperDuper backup where I had already installed 10.10.3) and I would like to be able to get Apple updates in the future.


A funny thing happened when I was initially tying out a possible solution someone suggested. It was suggested to me that I should cover up the 19th pin of HDMI male connector that goes into my Sony with a thin piece of tape. I did this and it did not solve anything. However, on my first try, I accidentally covered up the 2nd pin instead and when I switched my iMac on, it did recognize the Sony although I didn't get a picture.

May 11, 2015 4:47 AM in response to kenan79

I have the same permissions issue with a MacBook Pro (15-inch, Early 2011) where these following permission problems keep returning after reboot.



I also have done a full system wipe and installed Yosemite 10.10.3 and these permission issues still return. I don't use an external display, but have done in the past with a Thunderbolt adapter.



Did anyone managed a fix or the best thing to try? This couldn't be a thunderstrike issue could it?



Many thanks to anyone who can help



Group differs on “Library/Printers/InstalledPrinters.plist”; should be 80; group is 0.


Permissions differ on “Library/Printers/InstalledPrinters.plist”; should be -rw-rw-rw- ; they are -rw-r--r-- .


Repaired “Library/Printers/InstalledPrinters.plist”


User differs on “private/var/db/displaypolicyd”; should be 0; user is 244.


Group differs on “private/var/db/displaypolicyd”; should be 0; group is 244.


Repaired “private/var/db/displaypolicyd”

Aug 24, 2015 4:25 PM in response to -ixen-

I have the same issues - once I boot up, I can work normally. After 1 restart however, I get this same permissions issue

"User differs on private/var/db/displaypolicyd; should be 0; user is 244.

Group differs on private/var/db/displaypolicyd; should be 0; user is 244.

Repaired "private/var/db/displaypolicyd"

When I shut down then restart the next day, the reboot stalls and I need to force shut down. If I then start up in 'safe mode' I can run the permissions verification and repair, but then I only get to restart one time until a second restart stalls midway in the boot up and I must force shut down then restart in 'safe mode'. Am I doomed to restarting in save mode everytime I use this computer? Its a Mac-Pro (Early 2008), 2 x 2.8 GHz Quad-Core Intel Xeon, 16GB Memory, Graphics card ATI Radeon HD 5770 1024 MB. I am using Dual monitors. This problem started on Aug. 12 after upgrading to Yosemite, have the latest 10.10.5 and have also erased the hard drive and did a clean install. Still this happens everytime I start the computer. Is there a permanent fix?

Dec 23, 2015 12:39 AM in response to idtstudio

I asked developers in bug report if the following displaypolicyd log is normal.

u>52603393 ERROR: AGDC suppport not present in system

u>52603463 ERROR: Policy engine instance init failed

they said that "displaypolicyd log simply states system is not managed by AGDC and does not lead to any additional information about this panic report"

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Permissions problem in displaypolicyd

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