Dunno, but I'd be messing around with the BIOS. Usually there's something there that you have to tweak. Turn stuff on/off that looks right. Look for stuff about turning on/off power management, apci, etc. (Obvious: don't mess with CPU speed, clock speed, HDD settings, etc) -Ben On Tuesday 23 January 2007 17:02, nethub at gmail.com wrote: > Hello, > > We have a number of systems running KM400 chipsets from VIA (Socket > A/462). Two different models have produced the same results -- DFI > KM400-MLV and MSI KM4M-V. When a /sbin/reboot or /sbin/shutdown -r now > is issued, the system does everything you would expect from a reboot, > but when it gets to Rebooting System, it hangs and requires a power cycle. > > The logs do not indicate anything is going wrong. It's not a kernel > panic. I've tried appending "acpi=off noapic" or just "apci=off" to > grub.conf and neither help. We've tested these boards extensively with > various CPU's, hard drives, and RAM and they show no other issues, so > it's not hardware defects or hardware compatibility issues. > > I'm not sure what is going on, but assistance would be greatly appreciated. > > Thanks. > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > > -- > This message has been scanned for viruses and > dangerous content by MailScanner, and is > believed to be clean. > -- "The best way to predict the future is to invent it." - XEROX PARC slogan, circa 1978