SRU: * https://lists.ubuntu.com/archives/kernel-team/2024-March/149487.html (noble) * https://kernel.ubuntu.com/gitea/kernel/noble-linux-unstable/src/branch/vicamo/bug-2056716-amdgpu-abm (unstable, to create PR when base branch is synced)
** Description changed: + [SRU Justification] + + [Impact] + + power-profiles-daemon >= 2.0 now utilizes AMD GPU panel_power_savings + sysfs entry to set desired panel power saving level. Related kernel + fixes are to be released in v6.9. + + [Fix] + + Two linux-next committed fixes are required. The first one introduces + panel_power_savings sysfs entry itself, and the second one extends + abmlevel sysfs entry to allow an auto mode. + + [Test Case] + + 1. Check existence of panel_power_savings sysfs entry: + + $ cat /sys/class/drm/card0-eDP-1/amdgpu/panel_power_savings + -1 + + 2. Remove power cable and switch between power profiles from Power + Management settings. The content of above panel_power_savings sysfs + entry should be updated correspondingly. + + [Where problems could occur] + + While the abmlevel entry now has a different default value that allows + automatic power management, the behavior may differ from users' + expectation. + + [Other Info] + + power-profiles-daemon >= 0.20 is only available on Noble or later at + this moment, so only Noble/Unstable will be nominated for fix. + + ========== original bug report ========== + Required kernel fixes (in linux-next): * https://gitlab.freedesktop.org/agd5f/linux/-/commit/63d0b87213a0ba241b3fcfba3fe7b0aed0cd1cc5 * https://gitlab.freedesktop.org/agd5f/linux/-/commit/040fdcde288a2830edc31dd507963d6aadf990d2 See also power-profiles-daemon merge request https://gitlab.freedesktop.org/upower/power-profiles- daemon/-/merge_requests/137 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2056716 Title: To support AMD Adaptive Backlight Management (ABM) for power profiles daemon >= 2.0 Status in HWE Next: New Status in linux package in Ubuntu: In Progress Status in linux source package in Noble: In Progress Bug description: [SRU Justification] [Impact] power-profiles-daemon >= 2.0 now utilizes AMD GPU panel_power_savings sysfs entry to set desired panel power saving level. Related kernel fixes are to be released in v6.9. [Fix] Two linux-next committed fixes are required. The first one introduces panel_power_savings sysfs entry itself, and the second one extends abmlevel sysfs entry to allow an auto mode. [Test Case] 1. Check existence of panel_power_savings sysfs entry: $ cat /sys/class/drm/card0-eDP-1/amdgpu/panel_power_savings -1 2. Remove power cable and switch between power profiles from Power Management settings. The content of above panel_power_savings sysfs entry should be updated correspondingly. [Where problems could occur] While the abmlevel entry now has a different default value that allows automatic power management, the behavior may differ from users' expectation. [Other Info] power-profiles-daemon >= 0.20 is only available on Noble or later at this moment, so only Noble/Unstable will be nominated for fix. ========== original bug report ========== Required kernel fixes (in linux-next): * https://gitlab.freedesktop.org/agd5f/linux/-/commit/63d0b87213a0ba241b3fcfba3fe7b0aed0cd1cc5 * https://gitlab.freedesktop.org/agd5f/linux/-/commit/040fdcde288a2830edc31dd507963d6aadf990d2 See also power-profiles-daemon merge request https://gitlab.freedesktop.org/upower/power-profiles- daemon/-/merge_requests/137 To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/2056716/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
