debcrafters-packages team mailing list archive

[Sebastien Bacher <2115041@xxxxxxxxxxxxxxxxxx>]

Thanks for working on this issue. Could you update the description to be
a bit more explicit on the visible effect of the issue. Quoting the SRU
documentation about "Impact"

> An explanation of the effects of the bug on users and justification
for backporting the fix to the stable release.

I've personally no idea what USTT is and what effect it will have on my
system to have that set. Is that specific to some hardware and which
models are impacted?

The commit also mentions something new in 6.14, what is the user story
for a Noble user still on the 6.8 kernel?

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Ubuntu.
https://bugs.launchpad.net/bugs/2115041

Title:
  Can't recognize custom ACPI platform profile

Status in OEM Priority Project:
  New
Status in power-profiles-daemon package in Ubuntu:
  In Progress

Bug description:
  [ Impact ]

   * Changing the Power Mode from PPD (Perfomance/Balance/Power Saver),
  the USTT(User Selectable Thermal Table) setting will also be changed.
  Add the feature to synchronize Power Mode and ACPI ThermalManagement
  setting.

  The mapping relationship power mode and platform profiles:
  performance <-> performance
  balanced <-> balanced/balanced_performance/cool
  power saver <-> low-power/quiet

  [ Test Plan ]

   * On machine supports ACPI platform profile, which has sysfs node
  /sys/firmware/acpi/platform_profile

   * Try to modify power mode by $ sudo powerprofilectl set <power-mode>

   * Check if /sys/firmware/acpi/platform_profile being updated

   * Check if BIOS update the ThermalManagement setting by $ fwupdmgr
  get-bios-setting ThermalManagement after reboot

  [ Where problems could occur ]

   * The change tries to map the power mode and platform_profile. It
  doesn't work if the platform profile is unexpected

  [ Other Info ]

   * Upstream commit: https://gitlab.freedesktop.org/upower/power-
  profiles-daemon/-/commit/6b565b0b05a2bc92e3c546a567b394f415937265

   * The patch is in 25.04 and 25.10 already.

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