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SubjectRe: kernel 2.6.10-2.6.13-rc4 hang reboot from linux(not from windows or from BIOS),but 2.6.8 and 2.6.9 haven't
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gnome boxer <gnome.boxer@gmail.com> writes:

> 2005/8/19, roucaries bastien <roucaries.bastien@gmail.com>:
>> On 8/19/05, gnome boxer <gnome.boxer@gmail.com> wrote:
>> > I use fedora core 4,when I rebooted from linux(not from windows or
>> > BIOS),it will hang after the system POST before grub display the stage
>> > 1.5 on the screen,so I must reboot again from there using CRTL+ALT+DEL
>> >
>> > I don't know whether this belongs to grub or belongs to the linux
>> > reboot changes from 2.6.8 and 2.6.9
>>
>> did you try to add to the kernel command line reboot=cold or
>> reboot=bios or reboot=hard.
>>
> I tried the reboot=c reboot=b reboot=s
>
> They all have this
>
>
>
>> Seems your bios reboot routine is buggy. The preevious option are workarround.
>
> I think it's linux's reboot routine's fault

Not terribly likely as the reboot does occur. It looks more
like one of the drivers is leaving hardware in a state that
the BIOS cannot deal with it.

My gut feel says kexec one linux kernel from another would
be a quick way to check for the move obvious driver problems
in this area.

More simply might be to boot a minimal kernel with just
your root filesystem drivers and then keep adding drivers
until you have a kernel that fails.

The SMP reboot path did change in 2.6.10 but only very slightly.

Eric

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