After 10.6.4 Update Black Screen
Hello,
I have run into something that is driving me crazy. I have a Mac Pro Early 2008 and decided to do the 10.6.4 update. Update goes through, after chime and Apple Logo, it goes black and video becomes unresponsive, not output from video card. However you can hear everything booting up in the background (Skype, Volume Up and Down Sound from keyboard, etc). I have used Time Machine to Restore and now I am back on 10.6 and its okay. I have a ATI Radeon HD 4870 as a video card, so I don't know if its a video driver issue, but I can't figure it out. I have tried resetting PRAM, doing simple troubleshooting steps. Any help and suggestions would be greatly appreciated. I have not tried it with another monitor for I don't have one to test, my current monitor is a 30" Samsung SyncMaster 305t plus hooked up via DVI. Any help or suggestions would be appreciated.
Thank you
I have run into something that is driving me crazy. I have a Mac Pro Early 2008 and decided to do the 10.6.4 update. Update goes through, after chime and Apple Logo, it goes black and video becomes unresponsive, not output from video card. However you can hear everything booting up in the background (Skype, Volume Up and Down Sound from keyboard, etc). I have used Time Machine to Restore and now I am back on 10.6 and its okay. I have a ATI Radeon HD 4870 as a video card, so I don't know if its a video driver issue, but I can't figure it out. I have tried resetting PRAM, doing simple troubleshooting steps. Any help and suggestions would be greatly appreciated. I have not tried it with another monitor for I don't have one to test, my current monitor is a 30" Samsung SyncMaster 305t plus hooked up via DVI. Any help or suggestions would be appreciated.
Thank you
Mac Pro Early 2008, Mac OS X (10.6), ATI Radeon HD 4870 Video Card