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Dark mode stuck on

Hello everyone-


I have a Late 2012 Mac Mini with OS X 10.10.3 on it. Ever since Yosemite was released, I've been using the dark mode feature. I wanted to turn it off the other day but I can't. Whenever I uncheck the checkbox, it does nothing. Upon System Preferences quit and relaunch, the checkbox checks itself again. This does not occur on another user account. I've also tried the sleuth of Terminal commands to manually set the mode back but none of that is working. Any suggestions? I contacted Apple about this and the tech rep didn't really know what to do.


Oh, I also reinstalled OS X without erasing any of my data through Internet Recovery.


Any suggestions? Thanks!!

Mac mini, OS X Yosemite (10.10.3), Late 2012

Posted on May 26, 2015 4:43 PM

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29 replies

May 26, 2015 5:26 PM in response to jwukitsch

I've tried the following since this post with no luck:


*Boot into safe mode - nope, still stuck

*Delete com.apple.systempreferences.plist - nope, nothing changed inside of System Preferences


It's a bit weird that deleting that plist didn't do anything. I heard that's supposed to wipe out all Sys Prefs settings..oh well. Any suggestions? I'm stumped.

May 26, 2015 6:58 PM in response to jwukitsch

Back up all data before proceeding.

This procedure will unlock all your user files (not system files) and reset their ownership, permissions, and access controls to the default. If you've intentionally set special values for those attributes on any of your files, they will be reverted. In that case, either stop here, or be prepared to recreate the settings if necessary. Do so only after verifying that those settings didn't cause the problem. If none of this is meaningful to you, you don't need to worry about it, but you do need to follow the instructions below.

Step 1

If you have more than one user, and the one in question is not an administrator, then go to Step 2.

Triple-click anywhere in the following line on this page to select it:

sudo find ~ $TMPDIR.. -exec chflags -h nouchg,nouappnd,noschg,nosappnd {} + -exec chown -h $UID {} + -exec chmod +rw {} + -exec chmod -h -N {} + -type d -exec chmod -h +x {} + 2>&-

Copy the selected text to the Clipboard by pressing the key combination command-C.

Launch the built-in Terminal application in any of the following ways:

☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)

☞ In the Finder, select Go Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.

☞ Open LaunchPad and start typing the name.

Paste into the Terminal window by pressing command-V. I've tested these instructions only with the Safari web browser. If you use another browser, you may have to press the return key after pasting.

You'll be prompted for your login password, which won't be displayed when you type it. Type carefully and then press return. You may get a one-time warning to be careful. If you don’t have a login password, you’ll need to set one before you can run the command. If you see a message that your username "is not in the sudoers file," then you're not logged in as an administrator.

The command may take several minutes to run, depending on how many files you have. Wait for a new line ending in a dollar sign ($) to appear, then quit Terminal.

Step 2 (optional)

Take this step only if you have trouble with Step 1, if you prefer not to take it, or if it doesn't solve the problem.

Start up in Recovery mode. When the OS X Utilities screen appears, select

Utilities Terminal

from the menu bar. A Terminal window will open. In that window, type this:

resetp

Press the tab key. The partial command you typed will automatically be completed to this:

resetpassword

Press return. A Reset Password window will open. You’re not going to reset a password.

Select your startup volume ("Macintosh HD," unless you gave it a different name) if not already selected.

Select your username from the menu labeled Select the user account if not already selected.

Under Reset Home Directory Permissions and ACLs, click the Reset button.

Select

Restart

from the menu bar.

May 26, 2015 7:27 PM in response to jwukitsch

Back up all data.

Triple-click anywhere in the line below on this page to select it:

mv L*/P*/.GlobalPreferences.plist Desktop/GlobalPreferences.plist

Copy the selected text to the Clipboard by pressing the key combination command-C.

Paste into a Terminal window by pressing command-V. A file named "GlobalPreferences.plist" will appear on the Desktop.

Log out and log back in. Test. If the problem is resolved, you'll need to recreate some of your settings in System Preferences. You can then delete the file on the Desktop. Otherwise, you can reverse the above action by entering the following command in the same way as before:

mv Desktop/GlobalPreferences.plist L*/P*/.GlobalPreferences.plist

Log out again. Post your results.

May 27, 2015 6:27 AM in response to jwukitsch

Please read this whole message before doing anything.

This procedure is a test, not a solution. Don’t be disappointed when you find that nothing has changed after you complete it.

Step 1

The purpose of this step is to determine whether the problem is localized to your user account.

Enable guest logins* and log in as Guest. Don't use the Safari-only “Guest User” login created by “Find My Mac.”

While logged in as Guest, you won’t have access to any of your documents or settings. Applications will behave as if you were running them for the first time. Don’t be alarmed by this behavior; it’s normal. If you need any passwords or other personal data in order to complete the test, memorize, print, or write them down before you begin.

Test while logged in as Guest. Same problem?

After testing, log out of the guest account and, in your own account, disable it if you wish. Any files you created in the guest account will be deleted automatically when you log out of it.

*Note: If you’ve activated “Find My Mac” or FileVault, then you can’t enable the Guest account. The “Guest User” login created by “Find My Mac” is not the same. Create a new account in which to test, and delete it, including its home folder, after testing.

Step 2

The purpose of this step is to determine whether the problem is caused by third-party system modifications that load automatically at startup or login, by a peripheral device, by a font conflict, or by corruption of the file system or of certain system caches.

Please take this step regardless of the results of Step 1.

Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards, if applicable. Start up in safe mode and log in to the account with the problem.

Note: If FileVault is enabled in OS X 10.9 or earlier, or if a firmware password is set, or if the startup volume is a software RAID, you can’t do this. Ask for further instructions.

Safe mode is much slower to start up and run than normal, with limited graphics performance, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal startup may also be somewhat slow.

The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.

Test while in safe mode. Same problem?

After testing, restart as usual (not in safe mode) and verify that you still have the problem. Post the results of Steps 1 and 2.

May 27, 2015 2:46 PM in response to jwukitsch

Triple-click the line below on this page to select it, then copy the text to the Clipboard by pressing the key combination command-C:

/Library/Managed Preferences

In the Finder, select

Go Go to Folder...

from the menu bar and paste into the box that opens by pressing command-V. You won't see what you pasted because a line break is included. Press return. A folder may open. If it does, is there a subfolder with the name of your user account?

Dark mode stuck on

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