Rudi Ahlers wrote:
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@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 " ?
That did a 'halt' without a shutdown - power still on, X not terminated,
system halted - no reboot tho.
This is fun, isn't it? :-)
-S
[root@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.
--
Simen Thoresen - Dolphin ICS Systems Administrator
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