Bug 13989

Summary:	ACPI: Device [FAN0] failed to transition to D0
Product:	ACPI	Reporter:	greg.toombs
Component:	Power-Fan	Assignee:	acpi_power-fan
Status:	REJECTED INVALID
Severity:	normal	CC:	rui.zhang
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	2.6.30-gentoo-r4	Subsystem:
Regression:	No	Bisected commit-id:
Attachments:	/proc/acpi/debug_layer /proc/acpi/debug_level dmesg /proc/acpi/fan/FAN0/state acpidump (ubuntu)

Description greg.toombs 2009-08-15 18:22:39 UTC

Created attachment 22723 [details]
/proc/acpi/debug_layer

This error occurs repeatedly in my dmesg (and has for years now). I have a Toshiba A100 laptop. This error occurs in the kernels for both my gentoo and linux distributions.

Some downstream reports are at https://bugs.launchpad.net/ubuntu/+source/linux/+bug/63550 .

I've enabled ACPI function tracing and verbose power management debugging.

Comment 1 greg.toombs 2009-08-15 18:23:22 UTC

Created attachment 22724 [details]
/proc/acpi/debug_level

Comment 2 greg.toombs 2009-08-15 18:24:17 UTC

Created attachment 22725 [details]
dmesg

Comment 3 greg.toombs 2009-08-15 18:27:48 UTC

Created attachment 22726 [details]
/proc/acpi/fan/FAN0/state

Comment 4 Zhang Rui 2009-08-17 01:53:21 UTC

please attach the acpidump output of your laptop.
is the fan state always "off"?

Comment 5 greg.toombs 2009-08-17 03:06:52 UTC

Created attachment 22749 [details]
acpidump (ubuntu)

Comment 6 Zhang Rui 2009-08-17 03:31:49 UTC

well. fake ACPI fan device implemented in this laptop.
Close this bug as it's a BIOS problem.
you can use boot option acpi.power_nocheck=1 to get rid of these annoying messages.