Monday, January 9, 2012

Linux freeze at reboot

Problem:  My Linux environment (Oracle Linux 5 update 7 on Dell T1600) goes through the entire shutdown sequence normally, then hangs on a blank screen at the point when it would normally reboot the computer. It has to be manually power down and restart

Solution: Add "reboot=b" to kernel parameter (for Grub, it is inside /boot/grub/grub.conf)

For 64-bit OS, you may need "reboot=p,e,f"

Here is a excellent link about this topic

Update (July 3, 2012) : The following also fix the problem:

"VT for Direct I/O" from the bios

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