RHEL 4 Shutdown issue on Poweredge 800

Dear Specialists

 

I have tried many options such as :

 

1.  putting acpi=off or acpi=ht in the grub.conf file

2.  putting acpi=on in the grub.conf file

3.  putting apm=power_off apm=realmode_power_off in the grub.conf file

4.  chkconfig --levels 35 apmd off

 

None of these options can power off my server thoroughly.

 

The BIOS version is A01.  The Logical Processor has been disabled in the BIOS.

 

When acpi=off or acpi=ht is set, my display shows the following after I have chosen the shutdown function.

 

Halting system...
md: stopping all md devices.
md: md0 switched to read-only mode.
Synchronizing SCSI cache for disk sdb:

psmouse.c: bad data from KBC - timeout
Power down.

I need to push the power button in order to shut down the server.

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If I push the power button with acpi=off or acpi=ht in the grub.conf file, the server will immediately power off without stopping the services.  I will therefore receive a warning message on next startup.

 

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Other options will go through the normal shutdown process and return a blank screen.  The keyboard will be disabled.  I need to hold the power button for few seconds in order to power down the server. 

 

Could you please tell me what other settings I can try to solve this problem?

 

Thanks a lot.

 

Regards

Ben