question about dmesg output - acpi0

Lowell Gilbert freebsd-questions-local at
Mon Aug 1 13:39:34 GMT 2005

"D. Goss" <lists at> writes:

> I'm trying to figure out my dmesg - I'm getting this in part:
> acpi0: <IBM SERONYXP> on motherboard
> acpi0: Power Button (fixed)
> acpi0: reservation of 460, 2 (4) failed
> Timecounter "ACPI-safe" frequency 3579545 Hz quality 1000
> acpi_timer0: <32-bit timer at 3.579545MHz> port 0x488-0x48b on acpi0
> cpu0: <ACPI CPU> on acpi0
> cpu1: <ACPI CPU> on acpi0
> cpu2: <ACPI CPU> on acpi0
> cpu3: <ACPI CPU> on acpi0
> pcib0: <ACPI Host-PCI bridge> on acpi0
> pci0: <ACPI PCI bus> on pcib0
> pci0: <display, VGA> at device 5.0 (no driver attached)
> atapci0: <ServerWorks CSB5 UDMA100 controller> port 0x700-0x70f,
> 0x376,0x170-0x17
> 7,0x3f6,0x1f0-0x1f7 at device 15.1 on pci0
> can someone shed any light on this part: acpi0: reservation of 460, 2
> (4) failed  ?
> This is an IBM xSeries 345.  I have read the acpi man and understand
> some generalities but am wondering if I could be building a different
> kernel and avoid the error message.  This is on 5.3 and with GENERIC
> w/SMP kernel.

Given that you're still running an old release, how much effort are
you interested in going to?  Do you think there are any negative
effects other than the message being printed out?

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