I just upgraded from RH9 to FC4. The the distribution CDs I used
provided 2.6.11-1.1369_FC4.
The upgrade was successful and I was happy to see ACPI actually power
off my machine when I did a shut down. Something I had missed when I
went from XP to RH9.
My next step was to upgrade using yum. This jumped me to
2.6.17-1.2139_FC4. ACPI was now disabled in boot up.
After several days of poking araound doing before and after compares I
found something that works.
I added an acpi=force kernel parameter. ACPI loaded and shutdown now
powers off the box.
Yeah!
I spotted the work-around in another thread where it is used to get
around the ACPI BIOS age cutoff.
Not sure what happen after 2.6.11, though.
Does anyone care what happened? Should this be reported as a bug?
The motherboard, I am not sure what it is. The box is a HP Pavilion
9695C. The closest I can get to a specification for the motherboard is:
http://h10025.www1.hp.com/ewfrf/wc/genericDocument?cc=us&docname=bph05885&lc=en&jumpid=reg_R1002_USEN
Generically described as "Motherboard and Jumper Settings for Systems
with AMD Athlon Processor and an AMD Irongate (AMD-751) Chipset".
Here is a dmesg excerpt showing the dissabling message.
Jul 3 09:15:43 walden4 kernel: klogd 1.4.1, log source = /proc/kmsg
started.
Jul 3 09:15:43 walden4 kernel: Linux version 2.6.17-1.2139_FC4
(bhcompile@xxxxxxxxxxxxxxxxxxxxxxxxxxx) (gcc version 4.0.2 20051125 (Red
Hat 4.0.2-8)) #1 Fri Jun 23 20:56:41 EDT 2006
Jul 3 09:15:43 walden4 kernel: BIOS-provided physical RAM map:
Jul 3 09:15:43 walden4 kernel: BIOS-e820: 0000000000000000 -
000000000009f800 (usable)
Jul 3 09:15:43 walden4 kernel: BIOS-e820: 000000000009f800 -
00000000000a0000 (reserved)
Jul 3 09:15:43 walden4 kernel: BIOS-e820: 00000000000e9400 -
0000000000100000 (reserved)
Jul 3 09:15:43 walden4 kernel: BIOS-e820: 0000000000100000 -
000000000fff0000 (usable)
Jul 3 09:15:43 walden4 kernel: BIOS-e820: 000000000fff0000 -
000000000ffffc00 (ACPI data)
Jul 3 09:15:43 walden4 kernel: BIOS-e820: 000000000ffffc00 -
0000000010000000 (ACPI NVS)
Jul 3 09:15:43 walden4 kernel: BIOS-e820: 00000000fffc0000 -
0000000100000000 (reserved)
Jul 3 09:15:43 walden4 kernel: 0MB HIGHMEM available.
Jul 3 09:15:43 walden4 kernel: 255MB LOWMEM available.
Jul 3 09:15:43 walden4 kernel: Using x86 segment limits to approximate
NX protection
Jul 3 09:15:43 walden4 kernel: DMI not present or invalid.
Jul 3 09:15:43 walden4 kernel: ACPI: Disabling ACPI support
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