Red Hat Bugzilla – Bug 106809
acpi=on required to run ACPI
Last modified: 2007-04-18 12:58:18 EDT
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Description of problem:
The acpi/* modules refuse to load, as described below. Other modules appear to
load fine. There is no relevant error text in dmesg or syslog.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
[root@localhost prl]# /sbin/modprobe battery
Actual Results: /lib/modules/2.4.22-1.2087.nptl/kernel/drivers/acpi/battery.o:
init_module: No such device
Hint: insmod errors can be caused by incorrect module parameters, including
invalid IO or IRQ parameters.
You may find more information in syslog or the output from dmesg
/lib/modules/2.4.22-1.2087.nptl/kernel/drivers/acpi/battery.o: insmod battery failed
There are no errors from depmod -a
When I cut an RPM of the kernel 2.4.22-20.9 kit, with APM disabled and ACPI
enabled, the corresponding ospm* modules built and could be loaded with modprobe
just fine (whether they worked is another matter, but they could be loaded).
I note that I'm having trouble with the i810_audio driver [Bug 106784], which
might be ACPI related, so it occurs to me to wonder if there is some more
general ACPI issue on this hardware.
Did you boot with acpi=on?
Same problem. I can't load battery or ac modules. It worked with version 2061
and started failing with kernel versions after that. This is an HP Pacillion Ze
Sigh. No, I've now set up acpi=on and it all works (so does i810_audio, bug ),
so I feel a bit stupid.
In my defence, I *did* try to search for similar problems, but as I saw quite a
few ACPI messages on start, it wasn't obvious to me that ACPI was off by
default. The modules don't fail with a helpful reason...
So I guess you can close this as a dup, but hopefully some others will find
this particular entry before wasting a day or two...
And bug 106784.
acpi=on works for me. Helps if you put it on the correct line in your grub.conf. :(