Bug 216605 - A ThinkPad W530 exhibits high idle power
Summary: A ThinkPad W530 exhibits high idle power
Status: NEW
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: 2022-10-19 06:20 UTC by Karl Mistelberger
Modified: 2022-10-25 07:06 UTC (History)
4 users (show)

See Also:
Kernel Version: 6.0.1-1.1
Subsystem:
Regression: Yes
Bisected commit-id:


Attachments
acpi journal - thinkpad_acpi blacklisted (15.65 KB, text/plain)
2022-10-19 08:42 UTC, Karl Mistelberger
Details
acpi journal - thinkpad_acpi loaded (16.84 KB, text/plain)
2022-10-19 08:50 UTC, Karl Mistelberger
Details
full dmesg thinkpad_acpi loaded (112.75 KB, text/plain)
2022-10-19 11:07 UTC, Karl Mistelberger
Details
full dmesg thinkpad_acpi blacklisted (106.29 KB, text/plain)
2022-10-19 11:08 UTC, Karl Mistelberger
Details
dmesg kernel 5-3-18 (102.44 KB, text/plain)
2022-10-19 11:38 UTC, Karl Mistelberger
Details

Description Karl Mistelberger 2022-10-19 06:20:57 UTC

    
Comment 1 Karl Mistelberger 2022-10-19 06:36:15 UTC
Idle power of kernel 6.0.1-1.1 is 35 Watt. Previous kernels have 18 Watt. Blacklisting thinkpad_acpi results in normal idle power of 18 Watt of kernel 6.0.1-1.1.
Comment 2 Takashi Iwai 2022-10-19 08:01:04 UTC
The original report in openSUSE bugzilla:
  https://bugzilla.opensuse.org/show_bug.cgi?id=1203404
Comment 3 Takashi Iwai 2022-10-19 08:05:09 UTC
Karl, which kernel version did *not* exhibit the behavior?  5.19.x kernel worked fine, and 6.0.x started showing the problem?
Comment 4 Takashi Iwai 2022-10-19 08:05:50 UTC
Also provide the more hardware details and dmesg outputs from both working and non-working cases.
Comment 5 Karl Mistelberger 2022-10-19 08:42:13 UTC
Created attachment 303034 [details]
acpi journal - thinkpad_acpi  blacklisted
Comment 6 Karl Mistelberger 2022-10-19 08:50:37 UTC
Created attachment 303035 [details]
acpi journal - thinkpad_acpi  loaded
Comment 7 Takashi Iwai 2022-10-19 09:03:55 UTC
I meant rather the case with the older good-working kernel (and thinkpad_acpi loaded).  And, give the full dmesg outputs.
Comment 8 Karl Mistelberger 2022-10-19 11:07:13 UTC
Created attachment 303037 [details]
full dmesg thinkpad_acpi loaded
Comment 9 Karl Mistelberger 2022-10-19 11:08:19 UTC
Created attachment 303038 [details]
full dmesg thinkpad_acpi blacklisted
Comment 10 Karl Mistelberger 2022-10-19 11:38:09 UTC
Created attachment 303040 [details]
dmesg kernel 5-3-18
Comment 11 Takashi Iwai 2022-10-19 11:54:53 UTC
You need to identify which is the last working kernel version.  Not that old openSUSE/SLE kernel.  That said, check 5.19.y, 5.18.y, etc, to figure out which kernel started regression.

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