Red Hat Bugzilla – Bug 142234
ACPI no longer works but used to in FC2
Last modified: 2015-01-04 17:13:46 EST
Description of problem:
Using ACPI in FC3 no longer works. Only some events are reported and
the battery status is incorrectly reported (never changes unless I
plug in the AC adapter and remove it). Most often the unplugging of
the AC adapter creates no events in /proc/acpi/event. The lid open and
close events are also not reported.
I used to have no problems with this on FC2 and also FC1.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1.Boot laptop with ACPI enabled
2.stop acpid and the cat /proc/acpi/event and see that npt all events
are reported and that false battery status is also reported
All events should be correctly reported.
This is not only laptop issue but also generic ACPI brokeness. Trying
to turn off computer with Gigabyte GA-7VT880L - VIA KT880 motherboard
hangs after acpi command is issued. Turning off the computer worked in
I have a similiar set of problems with FC3 on an Acer Aspire 1684
(kernel 2.6.10-1.741). Battery management via acpi is not functional
even though the acpi driver has initialised w/o errors:
ACPI: Power Resource [PFN0] (off)
ACPI: Power Resource [PFN1] (off)
ACPI: Fan [FAN0] (off)
ACPI: Fan [FAN1] (off)
ACPI: Processor [CPU0] (supports C1 C2 C3)
ACPI: Processor [CPU0] (supports 8 throttling states)
ACPI: Thermal Zone [THRM] (55 C)
speedstep-centrino: invalid ACPI data
speedstep-centrino: try compiling with
ACPI wakeup devices:
ACPI: (supports S0 S3 S4 S5)
ACPI: Power Button (FF) [PWRF]
ACPI: Lid Switch [LID]
ACPI: Sleep Button (CM) [SLPB]
The KDE Battery Management control reports :
Your computer seems to have a partial ACPI installation. ACPI was
probably enabled, but some of the sub-options were not - you need to
enable at least 'AC Adaptor' and 'Control Method Battery' and then
rebuild your kernel . This is confirmed by the lack of any files in
the /proc/acpi/ac_adapter/ and /proc/acpi/battery/ directories.
Some events are reported by acpi_listen - the lid, sleep & power
buttons. But none for battery or ac adapter.
Kernel update to 2.6.10-1.741_FC3 fixed this issue for me.
Nicholas, can you try the latest errata please ?
I just tried with 2.6.10-1.766_FC3 kernel and more events seen to be reported
but sometimes an ac unplug is not noticed at all and a lid close or open is
not reported or is reproted the next time I plug the ac adapter in (which can
be a very long time after the lid is open/closed).
An update has been released for Fedora Core 3 (kernel-2.6.12-1.1372_FC3) which
may contain a fix for your problem. Please update to this new kernel, and
report whether or not it fixes your problem.
If you have updated to Fedora Core 4 since this bug was opened, and the problem
still occurs with the latest updates for that release, please change the version
field of this bug to 'fc4'.
No, this problem is not present in FC4 and I belive it is fixed in FC3 as well. Since FC2 is now probably
considered obsolete, you can close this bug.