Re: "shutdown" does "restart"
- From: "John R. Delaney" <jdelaney@xxxxxxxxxx>
- Date: Tue, 01 Aug 2006 09:06:39 -0400
Xavier Llobet wrote:
In article <44CDFE01.2090600@xxxxxxxxxx>,
"John R. Delaney" <jdelaney@xxxxxxxxxx> wrote:
400MHz G4 PowerMac (Gigabit Ethernet version). OSX 10.3.9. Been running 10.3.9 since shortly after it was released.
For perhaps a week now, I have been having the same problem. It happens when I chose "Shutdown" from the menu while logged in and when I just click on the "Shutdown" icon on the login screen. The computer does the usual shutdown routine; it goes quiet for a few seconds; and it starts booting up again.
This may have happened occasionally in the past. Then again, I may have mouse-clicked on "Restart" rather than "Shutdown" on those occasions. It is completely consistent now.
I can actually shut the computer down my holding down the power button on the tower during the last of the quiet seconds and the start of the boot-up.
I cannot tell if this is a hardware or software problem. Doing a "Repair Permissions" with Disk Utility did not help. Running a full diagnostic with TechTool did not help either.
How do I fix this problem?
Do you use an USB hub? I have an iMac G3, and had the same problem. When I installed a small home network, I moved the USB printer to a printer server and disconnected the USB hub, as I did not need it anymore. The problem disappeared.
_x.
Actually, my hub is not the problem. I tried disconnecting it and nothing changed. No surprise there, as I have had it for some time.
Another USB device was causing the problem, though, I should have thought of it but just before the problem started, I bought a USB A/B switch so I could share my EPSON All-In-One printer/scanner with my wife's PC. When I unplugged it, the problem went away.
While on the subject of USB quirks, I should mention that the new switch was plugged into my keyboard which is, in turn, plugged directly into my computer. When it was plugged into my USB hub (and the hub into the computer), I found the keyboard commands for booting from a CD, booting into Open Firmware, etc. did not work.
I have not yet tried the experiment where I plug the switch into the hub and see if the problem goes away. That one I will try this evening.
The morale of this story: The PowerMac USB interface, at least for older models like mine, has some very odd quirks that one would not expect if everyone (including Apple) is following the USB 1.1/2.0 specifications exactly. In fact, it seems to be as troublesome as the old SCSI interfaces often were, and broader in the nature of the malfunctions.
Note to Apple: This sort of thing is NOT good for the Mac's user-friendly image.
John R. Delaney
Mildly annoyed consumer
.
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