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@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
--
Simen Thoresen - Dolphin ICS Systems Administrator
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