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 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 " ? 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 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. > > -- Simen Thoresen - Dolphin ICS Systems Administrator