[X4U] Starts to boot, then black screen

[Crandon David]

Good questions. We did have a USB hub connected while the upgrades  
were done. It is now disconnected though. No other peripherals. I'll  
check for any  login items next.

David


On May 19, 2006, at 2:01 PM, Jens Selvig wrote:

> Do you have any peripherals attached to the computer?
>
> Do you have any login items being launched?
>
> Jens
>
>
> On May 19, 2006, at 11:52 AM, Crandon David wrote:
>
>> Hello Everyone,
>>
>> Having trouble after upgrading to 10.4 Tiger in a 450MHz G4 AGP  
>> Graphics mac.
>>
>> This computer is used with an Apple 20" LCD display purchased  
>> about 2-3 years ago.
>>
>> It was running 10.2.x, then we upgraded, first a straight upgrade,  
>> then tried an Archive and Install on the main hard drive, then did  
>> an Archive and Install on the internal backup hard drive which was  
>> a clone (over a year old) using Carbon Copy Cloner. We've had the  
>> same problem in all instances.
>>
>> After the upgrade, we get a brief grey screen, then it goes black.  
>> We don't see the spinning little grey clock dial thing or anything  
>> else. This happens with both internal drives. The firmware is at  
>> it's latest version. We used Apple's Disk Repair and Repair  
>> Permissions at all appropriate times. We also ran Diskwarrior  
>> several times as well.
>>
>> The computer will boot properly if we zap the PRAM, but after  
>> shutting down and rebooting we get the black screen again. We have  
>> replaced the internal battery and pressed the CUDA button and  
>> reset the logic board per Apple's Knowledge Base articles.
>>
>> It boots properly from the Tiger disk and from the OS9 part of the  
>> system. The backup internal drive booted fine even though the main  
>> drive had this problem. After upgrading the internal drive we got  
>> the same problem with it as well.
>>
>> We've upgraded using Software Update to all the latest stuff,  
>> however, these problems happened even before we did that.
>>
>> NEW INFO: Just found out that if, after the screen goes black, we  
>> can press the power button once, which starts it pulsating as if  
>> the computer is asleep. Then, after pressing it again, the screen  
>> comes back on. So it appears that the computer is booting  
>> properly, but the screen goes black as if it's asleep. But the  
>> weird thing is that it goes black initially even before the OS  
>> loads. Changing the sleep/screen saver settings make no difference.
>>
>> Anyone?
>>
>> Thanks,
>>
>> David
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