Re: BUG: USB/Reboot

From: Collectively Unconscious (
Date: Fri Apr 27 2001 - 07:18:09 EST

On Tue, 24 Apr 2001, Alan Cox wrote:

> > If USB is disabled on a server works MB reboots hang in 2.2.x
> In almost all cases a hang after Linux reboots the system and it not coming
> back to the BIOS is a BIOS bug.
> You can confirm this by asking the kernel to do a real bios reboot with
> the reboot= option
For those besides me who were wondering where this is documented,
find . ! -type d ! -type l -exec grep "reboot=" {} \; -print
of /usr/src/linux revealed that it is only documented in

Here is the pertinant paragraph:

General Information

   <CTRL><ALT><DEL> now performs a cold reboot instead of a warm reboot
for increased hardware compatibility. If you want a warm reboot and
know it works on your hardware, add a "reboot=warm" command line option
in LILO. A small number of machines need "reboot=bios" to reboot via
the BIOS.

Note that ./Documentation/kernel-parameters.txt only contains:
    reboot= [BUGS=ix86]


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This archive was generated by hypermail 2b29 : Mon Apr 30 2001 - 21:00:17 EST