More about sleep problems?

I have more information on my sleep problem on my G4 running 10.4.9.

I try putting my computer to sleep in the following ways.

1. I select Sleep from the Apple menu.
2. I press the Power button momentarily on the front of the Mac. 3. From the log-in window during startup, I press the back arrow and select Sleep

In every case, the cursor disappears, the keyboard stops functioning. I have to reboot in order to get going again. The screen looks the same as before the sleep attempt except for the lack of a cursor. My optical mouse stays lit. The screen does not go into the low power mode. I still have to see if the Energy Saver will kick in under those circumstances if I wait long enough.

If I let the Energy Saver kick in, the screen goes dark. Waking up from that state seems to work OK.

I have booted from a version of 10.3 on a different drive. The same problem occurs.

I have used Disk Warrior and other techniques to purge my drives of errors. I now get a clean bill of health. I have reinstalled 10.4.9. Nothing helps. I will try removing everything from my startup folder.

I cannot see how reformatting my main drive and reinstalling the system will help under these circumstances. Can it be a hardware failure somewhere?

What now?

Bill

On 4/24/07 1:03 PM, in article 240420071403302331%dave@N_O_T_T_H_I_Sbalderstone.ca, Dave Balderstone wrote:

Does this happen under every user account?

Have you tested it under a different login?

I only have one account at this time.

BTW, In my original post, I mentioned that when the cursor disappears, I hear a click from the computer that sounds like a relay flipping. That is still happening.

Bill
-- Fermez le Bush--about two years to go.

I did create a second account. As expected I had the same disappearing cursor freezing problem. I expected it because it can occur BEFORE the actual log-in. That is, a backward arrow gets to a window from which sleep can be attained. That, is the sleep of death!

I also zapped the PRAM. I measured the PRAM cell voltage and it was a bit low under load. That should only screw up date and time for a while. No more insight. Today, I am scheduled to talk to a tech at the Genius Bar an an Apple Store.

Otherwise, the computer seems to work well without any problems. I am concerned, however, that there is a leak somewhere in the dam so I might find a flood soon.

Bill
-- Fermez le Bush--about two years to go.