Bug 13989 - ACPI: Device [FAN0] failed to transition to D0
Summary: ACPI: Device [FAN0] failed to transition to D0
Status: REJECTED INVALID
Alias: None
Product: ACPI
Classification: Unclassified
Component: Power-Fan (show other bugs)
Hardware: All Linux
: P1 normal
Assignee: acpi_power-fan
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2009-08-15 18:22 UTC by greg.toombs
Modified: 2009-08-17 03:31 UTC (History)
1 user (show)

See Also:
Kernel Version: 2.6.30-gentoo-r4
Subsystem:
Regression: No
Bisected commit-id:

Attachments
/proc/acpi/debug_layer (1.26 KB, text/plain)
2009-08-15 18:22 UTC, greg.toombs 		Details
/proc/acpi/debug_level (1.20 KB, text/plain)
2009-08-15 18:23 UTC, greg.toombs 		Details
dmesg (94.12 KB, text/plain)
2009-08-15 18:24 UTC, greg.toombs 		Details
/proc/acpi/fan/FAN0/state (29 bytes, text/plain)
2009-08-15 18:27 UTC, greg.toombs 		Details
acpidump (ubuntu) (133.10 KB, text/plain)
2009-08-17 03:06 UTC, greg.toombs 		Details
Add an attachment (proposed patch, testcase, etc.)

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.
Note You need to log in before you can comment on or make changes to this bug.