Reboot hangs on xeon server

[Christopher McGee]

Andy Reitz wrote:

>On Tue, 11 Apr 2006, Christopher McGee wrote:
>
>  
>
>>The server I have is using an Intel SE7501CW2 server board with 1 Xeon
>>2.0Ghz processor.  It's got a Mylex AcceleRAID 170 card with 6 - 36GB
>>scsi drives.  When I reboot the machine, via ctrl-alt-del, or typing
>>reboot, it syncs disks, then gives the messages:
>>
>>All buffers synced.
>>Uptime: ##m##s
>>
>>At this point, it just hangs forever and has to be powercycled.  I've
>>tried installing 4.11, 5.4 and 6.0 on this box.  The only version that
>>works properly is 4.11, however, at this point I would prefer to not put
>>another 4.x box in production.  I have tried booting in safe mode and
>>rebooting and I get the same result.  I've tried disabling usb in the
>>bios, in the kernel, and in both, and it still has the same results.
>>
>>Any ideas what could fix this?
>>    
>>
>
>Hi Chris,
>
>This is not my area of expertise, but this sounds like an ACPI problem to
>me. You might try googling that (in conjunction with your motherboard) and
>see what comes up.
>
>HTH,
>	-Andy.
>
>  
>
I have tried booting up with ACPI disabled.  I still experienced the 
same reboot problem.  I also thought that safe mode disabled acpi?  I 
have also updated the bios on the motherboard and the bios on the raid 
card to see if they were the problem.  Same problem persists.

Chris