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   Date: Mon, 22 Jan 2007 21:04:03 -0600   
   From: Dan Coit    
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   Newsgroups: alt.os.linux.ubuntu   
   Subject: Re: Shutdown requires manual power off   
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   Richard Asbridge wrote:   
   > Greetings all,   
   >    
   > I'm running Kubuntu 6.10 (64 bit edition) on the following box:   
   >    
   > Intel D975XBX motherboard   
   > Intel core 2 duo 2.4Ghz CPU   
   > 4GB RAM   
   > nVidia 7900 GTX graphics card   
   > Sound blaster Audigy SE   
   >    
   > Description of problem:   
   >    
   > When I shutdown the machine via "KDE right-click menu" or "init 0" or   
   > "shutdown" CLI commands the system comes to a halt safely but fails to cut   
   > the power to the screen, lights on the front of the box etc. The last   
   > message posted to the screen is "System will halt..."   
   >    
   > Observations, guesses etc:   
   >    
   > This behavior reminds me of the old days before machine could be switched   
   > off by software (remembers win95 on his 486DX2 66 *shudder*). I have a   
   > dual boot Win2K on this system and Win2K manages to shutdown the box   
   > without incident. I've tried openSuSE 10.2 (64 bit), Kubuntu 6.10 (64   
   > bit), and FreeBSD 6.1 (64 bit) all with the same symptoms. The fact that   
   > the default config in each of these three OS's fails in the same way makes   
   > me think that something is out of sorts in my BIOS, incidentally I've   
   > updated to the latest BIOS (ver 1474) from Intel in case that was a   
   > problem, sadly it wasn't. Does the fact that I'm trying out 64bit versions   
   > of these OS's have anything to do with it perhaps? Does any one else have   
   > this problem? The fact that win2k manages it suggests it may be falling   
   > back to an older "power off" instruction or perhaps a 32bit one that the   
   > machine can understand. I think I'm going to try to live boot a 32bit   
   > Linux and see if my problem persists... but any ideas you guys may have   
   > would be appreciated in the mean time :)   
   >    
   > Thanks for you time   
   >    
   > Richard   
      
   I had the same problem with my 800 Mhz Athlon.  I solved it by adding   
   "acpi=force" to the "kernel" line in /boot/grub/menu.lst.  Maybe that   
   would work for you too.  Hope this helps.   
   Iron Citadel   
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