From: bugzilla-daemon@kernel.org
To: platform-driver-x86@vger.kernel.org
Subject: [Bug 216347] ACPI power profile keeps switching to "low-power" on ThinkPad T14 Gen1 (AMD)
Date: Thu, 11 Aug 2022 08:41:54 +0000 [thread overview]
Message-ID: <bug-216347-215701-Xa8tRGfkGK@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-216347-215701@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=216347
--- Comment #4 from madcatx@atlas.cz ---
I modded the driver to log the events, here's the output. Note that I log all
events and have an extra output for the THM event so the output is a bit
noisier that necessary.
[ 110.307214] TPACPI event id 24626
* Manual switch to performance
[ 110.307221] TPACPI event THM_CSM_COMPLETED
[ 110.308287] TPACPI event id 4114
* Drop to low power
[ 125.374888] TPACPI event id 24626
[ 125.374894] TPACPI event THM_CSM_COMPLETED
* Manual switch to performance
[ 178.560859] TPACPI event id 24626
[ 178.560862] TPACPI event THM_CSM_COMPLETED
* Drop to low power
[ 321.588092] TPACPI event id 24626
[ 321.588100] TPACPI event THM_CSM_COMPLETED
* Manual switch to performance
[ 340.418211] TPACPI event id 24626
[ 340.418215] TPACPI event THM_CSM_COMPLETED
* Manual switch to performance
[ 344.953610] TPACPI event id 24626
[ 344.953614] TPACPI event THM_CSM_COMPLETED
* Drop to low power
[ 350.357321] TPACPI event id 24626
[ 350.357328] TPACPI event THM_CSM_COMPLETED
* Manual switch to performance
[ 352.865566] TPACPI event id 24626
[ 352.865573] TPACPI event THM_CSM_COMPLETED
* Drop to low power
[ 362.030351] TPACPI event id 24626
[ 362.030355] TPACPI event THM_CSM_COMPLETED
There doesn't seem to be anything hammering the toggle, it just switches itself
back to "low-power".
There doesn't seem to be any apparent pattern that would provoke this. All I
can tell is that the power profile seems to switch itself back from
"performance" to "low-power" after some time. It can take anywhere from 5 to 70
seconds for this to happen.
It also looks like the "balanced" profile seems to stick but I need to verify
this better.
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next prev parent reply other threads:[~2022-08-11 8:41 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-10 9:08 [Bug 216347] New: ACPI power profile keeps switching to "low-power" on ThinkPad T14 Gen1 (AMD) bugzilla-daemon
2022-08-10 14:41 ` [Bug 216347] " bugzilla-daemon
2022-08-10 15:02 ` bugzilla-daemon
2022-08-10 15:06 ` bugzilla-daemon
2022-08-11 8:41 ` bugzilla-daemon [this message]
2022-08-11 12:19 ` bugzilla-daemon
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