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 Web: http://www.SoftDux.com Check out my technical blog, http://blog.softdux.com for Linux or other technical stuff, or visit http://www.WebHostingTalk.co.za for Web Hosting stugg