http://bugzilla.kernel.org/show_bug.cgi?id=7122
[EMAIL PROTECTED] changed:
What |Removed |Added
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Attachment #8996 is|0 |1
obsolete| |
------- Additional Comments From [EMAIL PROTECTED] 2006-09-12 15:15 -------
Created an attachment (id=9005)
--> (http://bugzilla.kernel.org/attachment.cgi?id=9005&action=view)
dmesg output with the fan and debug patch applied
This dmesg output shows what the problem really is.
The first interesting part of it starts right after the ACPI processor module
configuration and reflects the thermal and fan initialization (lines 387 -
425). It shows that the initialization code is actually correct and my Comment
#14 is wrong. Sorry for that.
The second interesting part starts after the hda-intel message towards the end
(lines 694 - 737) and it illustrates the problem quite well. Namely, it
corresponds to the following operations:
1) Successful transition of fan [C351] to D3 (lines 694 - 700)
2) Successful transition of fan [C351] from D3 to D0 (lines 701 - 704)
3) Successful transition of fan [C351] from D0 to D3 (705 - 708)
4) Unsuccessful transition of fan [C351] from D3 to D0 (lines 709 - 714), which
has failed because the power resource [C34D] has not acutually been switched
on, although acpi_evaluate_object returned 0. Nonetheless,
resource->references for [C34D] has been increased, so the power resource now
appears to be 'on', which is evidently wrong.
5) Transition of fan [C351] from D3 to D0 that appears to be successful, but in
fact is not (lines 715 - 718), because [C34D] only appears to be 'on' due to
resource->references increased by the previous operation, but in fact it is
'off'. As a result, fan [C351] is now considered to be 'on' by the thermal
code, which is not true.
6) Successful transition of fan [C350] from D3 to D0 (lines 719 - 722)
7) Successful transition of fan [C350] from D0 to D3 (lines 723 - 726) [I have
no idea about what might have caused the APIC error.]
8) Unsuccessful transition of fan [C350] from D3 to D0 (lines 728 - 733), which
has failed because the power resource [C34C] has not acutually been switched
on, although acpi_evaluate_object returned 0. Again, resource->references for
[C34C] has been increased, so the power resource now appears to be 'on', which
is evidently wrong.
9) Transition of fan [C350] from D3 to D0 that appears to be successful, but in
fact is not (lines 734 - 737), because [C34C] is 'off', although it appears to
be 'on' due to resource->references increased by the previous operation. [Now
the thermal code thinks two fans, [C351] and [C350], are 'on', but none of the
actually is and the system goes above 70 C easily.]
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