[Bug 216347] New: ACPI power profile keeps switching to "low-power" on ThinkPad T14 Gen1 (AMD)

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=216347

            Bug ID: 216347
           Summary: ACPI power profile keeps switching to "low-power" on
                    ThinkPad T14 Gen1 (AMD)
           Product: Drivers
           Version: 2.5
    Kernel Version: 5.19
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Platform_x86
          Assignee: drivers_platform_x86@kernel-bugs.osdl.org
          Reporter: madcatx@atlas.cz
        Regression: No

Hi,

I recently discovered this annoying behavior. I use an udev script to toggle
between "low-power" and "performance" ACPI power profiles based on whether the
laptop is plugged into a wall. By cat'ing "/sys/firmware/acpi/platform_profile"
I observe the power profile always dropping to "low-power" a few seconds after
I manually change it to something else.

The machine has a 4750U Ryzen chip and the latest 1.41 firmware (DMI: LENOVO
20UDS02D00/20UDS02D00, BIOS R1BET72W(1.41 )). I run the latest 5.19 kernel.

I tried to toggle between S3 and S2idle sleep modes but that doesn't seem to
make any difference.

Is there anything I can do to help track this down?

Thanks!

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