[CentOS] ACPI reboot-issue (CentOS 4)

[Rudi Ahlers]

Simen Thoresen wrote:
> Simen Thoresen wrote:
>> Rudi Ahlers wrote:
>>> Simen Thoresen wrote:
>>>> Hi all,
>>>>
>>>> I'm trying to troubleshoot my way thru a ACPI-issue on several 
>>>> machines with the Asus P5N32-E SLI motherboard (S775, Nvidia 680i 
>>>> chipset)
>>>> http://www.asus.com/products.aspx?l1=3&l2=11&l3=397&l4=0&model=1459&modelmenu=1 
>>>>
>>>>
>>>> This is CentOS 4 x86_64, and appears on all tested kernels, 
>>>> including kernel-smp-2.6.9-67.0.4.EL
>>>>
>>>> My symptoms are that the machine won't reboot on the reboot 
>>>> command. 'poweroff' does turn the power off and halt halts the 
>>>> system (without turning the power off), but reboot effectively does 
>>>> a 'halt'.
>>>>
>>>> I can 'fix' this by giving the 'acpi=off' parameter to the kernel 
>>>> in grub, but this causes other problems (some of these machines 
>>>> have quad-core CPUs, and these require ACPI to initialize 3 of the 
>>>> cores. The dual-core CPU-machines work with acpi=off.
>>>>
>>>> With acpi=off, reboot works as it is supposed to.
>>>>
>>>> I think the root of this issue is the Asus BIOS - we also have 
>>>> several Asus M2N-SLI Deluxe (Athlon64, Nvidia 570 chipset) systems 
>>>> that started exhibiting the same symptom after a BIOS upgrade. On 
>>>> these acpi=off does not cause other problems, so this is no issue 
>>>> for us now.
>>>>
>>>> Any suggestions? I think I understand that turning ACPI off 
>>>> basically turns APM on, and that APM reboot works. Is there a way 
>>>> to do reboot with APM instead of ACPI?
>>>>
>>>> Yours,
>>>> -S
>>> What does "poweroff now -r" do?
>>>
>>
>> Nothing.
>>
>> [root at jelen-10 ~]# poweroff now -r
>> usage: poweroff [-n] [-w] [-d] [-f] [-i] [-p]
>>                   -n: don't sync before poweroffing the system
>
>> ...but poweroff -f killed power (immediately, apparently)
>>
>> and poweroff -p caused a normal poweroff (ie with shutdown)
>>
>
> ...and 'shutdown -r now' did the same as 'reboot' - ie 'halt' without 
> poweroff.
>
> -S
>
>
aah, I was thinking about "shutdow -r now"

Try "reboot -f " ?

[root at gimbli ~]# reboot --help
usage: reboot [-n] [-w] [-d] [-f] [-h] [-i]
        -n: don't sync before halting the system
        -w: only write a wtmp reboot record and exit.
        -d: don't write a wtmp record.
        -f: force halt/reboot, don't call shutdown.
        -h: put harddisks in standby mode.
        -i: shut down all network interfaces.


-- 

Kind Regards
Rudi Ahlers
CEO, SoftDux

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