Results 1 to 2 of 2
  1. #1

    Member Since
    Jun 22, 2007
    Intel iMac brightness/power management problem

    I have a problem with my iMac which I hope to address. My machine is an Intel based the entry level iMac 1.86GHz Core Duo system with OS X Leopard 10.5.5 installed. This problem has been present every since I had ordered the used machine, and installing various update seems to have did nothing to address the issue. The problem occurs when ever I schedule the Mac to shutdown/restart. After I turn it back own, the screen’s brightness is turned all the way down, and I have to manually adjust screen’s brightness to its original settings.

    Is this a know issue with iMacs, and if so is there any way to fix this problem? Thank you.

  2. #2

    chscag's Avatar
    Member Since
    Jan 23, 2008
    Keller, Texas
    2017 27" iMac, 10.5" iPad Pro, iPhone 6s+, iPhone 7+, Numerous iPods, High Sierra
    Read the following Apple KB article. Try the procedure given in the article and let us know.


Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Replies: 28
    Last Post: 07-22-2012, 07:10 PM
  2. Intel iMac (2006) power cuts out - PSU?
    By Leggie in forum Apple Desktops
    Replies: 5
    Last Post: 01-28-2011, 12:42 PM
  3. Value for Brightness Control? (color management purpose)
    By timdetert in forum macOS - Development and Darwin
    Replies: 0
    Last Post: 06-18-2010, 08:52 PM
  4. 24 inch intel imac doesn't power up
    By jinesh in forum Apple Desktops
    Replies: 1
    Last Post: 10-11-2009, 04:39 AM
  5. Remote Access Power Mac G5 to iMac (Intel)
    By jojoisme in forum Internet, Networking, and Wireless
    Replies: 0
    Last Post: 05-15-2008, 12:12 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts