I've updated the description to the SRU template. I do feel that this meets the "other safe cases" section.
** Description changed: + [ Impact ] + + power-profiles-daemon has the ability to make drastic improvements to + the power consumption of machines. This increases the likelihood of + them passing energy certifications such as Energy Star. + + On AMD laptops the following improvements are made: + * Tune the platform cTDP using the ACPI platform profile drivers. + * Tune the CPU using the amd-pstate EPP driver (kernel 6.5 or newer) + * Tune the backlight using AMD ABM (kernel 6.8 or newer) + * Tune the EPP dynamically based on AC vs battery + On Intel laptops the following improvements are made: + * Tune the CPU using the intel-pstate EPP/EPB driver + * Tune the EPP dynamically based on AC vs battery + + As Ubuntu 22.04 has kernel 6.5 and will later get kernel 6.8, many of + the improvements specifically for AMD laptops can apply. + + [ Test Plan ] + + Check for visual "performance issues" on battery using a web browser. + Verify correct EPP targets are selected (balance_power on battery balance_performance on AC). + Verify that changing to power-saver and performance profiles work properly. + The below significant bugfixes are implemented, which would enable more power & energy efficient modes on our supported laptops, as well as enable for the kernel default to change. + + [ Where problems could occur ] + + There is a very thorough integration test suite distributed with power- + profiles-daemon. This covers combinations of kernels and hardware that + are seen in Ubuntu. + + It is reported upstream that some Intel systems don't handle + balance_power effectively and can cause skipped frames. This should be + looked for explicitly when testing. + + It is possible that some users would prefer the increased performance + instead of efficiency that will be available on a laptop in battery + mode. They will need to manually change to performance mode to get that + performance. + + [ Other info ] + + Frame.work has been suggesting to their AMD laptop users to use a + backported release on this PPA + https://launchpad.net/~superm1/+archive/ubuntu/ppd since Framework 13 + AMD and Framework 16 AMD launched. There have been no reports of bugs + on the release on this PPA. + + Full upstream changelog is below. 0.21 ---- Since this release power-profiles-daemon is battery-state aware and some drivers use a more power efficient state when using the balanced profile on battery. In particular both the AMD and Intel P-State drivers will use the balance_power EPP profile, while for Intel one we also set the energy performance bias to 8 (instead of 6). This release also contains various fixes for the powerprofilesctl command line tool when using the launch or version commands. The tool is now better documented as we generate a manual page for it (if python3-argparse is installed) and bash completions. We're even generating the ZSH completions, but the install path must be provided. The daemon command line interface has been improved for debugging, so use --help-debug for further information. The systemd service lockdown settings have been restricted even more. Various code optimizations. - 0.20 ---- This release adds support for multiple power-profiles-daemon drivers to load simultaneously. This notably allows both CPU based control with amd-pstate or intel-pstate as well as ACPI platform profile based control. This release also adds support for the amdgpu panel power savings which uses dedicated hardware in systems with integrated Radeon graphics to decrease panel power consumption when the system is on battery. 0.13 ---- This release adds support for the AMD P-State driver that's been added to the 6.3 Linux kernel. This release also fixes mismatched profiles on some HP laptops and some miscellaneous bug fixes. 0.12 ---- This release adds support for the Intel "Energy Performance Bias" feature, which can be used on hardware that doesn't have a platform_profile or doesn't support HWP. It will also be used to eke out a bit more performance, or power, on systems which already supported HWP. More information is available in the README. 0.11.1 ------ This release stops power-profiles-daemon from modifying the cpufreq driver when driver when the user/administrator has chosen to disable the Intel P-State scaling governor (eg. forcing a passive operation mode). More information is available in the README. 0.11 ---- This release fixes problems on Intel machines when the CPUs didn't support turbo at all, or the performance scaling governor was built as default in the kernel. It also adds better end-user documentation, fixes in the command-line tool to not cause bug report tools to popup on not-uncommon errors, and a bug fix for running on some systems with controllable charge speeds. ** Description changed: [ Impact ] power-profiles-daemon has the ability to make drastic improvements to the power consumption of machines. This increases the likelihood of them passing energy certifications such as Energy Star. On AMD laptops the following improvements are made: * Tune the platform cTDP using the ACPI platform profile drivers. * Tune the CPU using the amd-pstate EPP driver (kernel 6.5 or newer) * Tune the backlight using AMD ABM (kernel 6.8 or newer) * Tune the EPP dynamically based on AC vs battery On Intel laptops the following improvements are made: * Tune the CPU using the intel-pstate EPP/EPB driver * Tune the EPP dynamically based on AC vs battery As Ubuntu 22.04 has kernel 6.5 and will later get kernel 6.8, many of the improvements specifically for AMD laptops can apply. [ Test Plan ] Check for visual "performance issues" on battery using a web browser. Verify correct EPP targets are selected (balance_power on battery balance_performance on AC). Verify that changing to power-saver and performance profiles work properly. The below significant bugfixes are implemented, which would enable more power & energy efficient modes on our supported laptops, as well as enable for the kernel default to change. [ Where problems could occur ] There is a very thorough integration test suite distributed with power- profiles-daemon. This covers combinations of kernels and hardware that are seen in Ubuntu. - It is reported upstream that some Intel systems don't handle + It is reported upstream that some "old" Intel systems don't handle balance_power effectively and can cause skipped frames. This should be looked for explicitly when testing. It is possible that some users would prefer the increased performance instead of efficiency that will be available on a laptop in battery mode. They will need to manually change to performance mode to get that performance. [ Other info ] Frame.work has been suggesting to their AMD laptop users to use a backported release on this PPA https://launchpad.net/~superm1/+archive/ubuntu/ppd since Framework 13 AMD and Framework 16 AMD launched. There have been no reports of bugs on the release on this PPA. Full upstream changelog is below. 0.21 ---- Since this release power-profiles-daemon is battery-state aware and some drivers use a more power efficient state when using the balanced profile on battery. In particular both the AMD and Intel P-State drivers will use the balance_power EPP profile, while for Intel one we also set the energy performance bias to 8 (instead of 6). This release also contains various fixes for the powerprofilesctl command line tool when using the launch or version commands. The tool is now better documented as we generate a manual page for it (if python3-argparse is installed) and bash completions. We're even generating the ZSH completions, but the install path must be provided. The daemon command line interface has been improved for debugging, so use --help-debug for further information. The systemd service lockdown settings have been restricted even more. Various code optimizations. 0.20 ---- This release adds support for multiple power-profiles-daemon drivers to load simultaneously. This notably allows both CPU based control with amd-pstate or intel-pstate as well as ACPI platform profile based control. This release also adds support for the amdgpu panel power savings which uses dedicated hardware in systems with integrated Radeon graphics to decrease panel power consumption when the system is on battery. 0.13 ---- This release adds support for the AMD P-State driver that's been added to the 6.3 Linux kernel. This release also fixes mismatched profiles on some HP laptops and some miscellaneous bug fixes. 0.12 ---- This release adds support for the Intel "Energy Performance Bias" feature, which can be used on hardware that doesn't have a platform_profile or doesn't support HWP. It will also be used to eke out a bit more performance, or power, on systems which already supported HWP. More information is available in the README. 0.11.1 ------ This release stops power-profiles-daemon from modifying the cpufreq driver when driver when the user/administrator has chosen to disable the Intel P-State scaling governor (eg. forcing a passive operation mode). More information is available in the README. 0.11 ---- This release fixes problems on Intel machines when the CPUs didn't support turbo at all, or the performance scaling governor was built as default in the kernel. It also adds better end-user documentation, fixes in the command-line tool to not cause bug report tools to popup on not-uncommon errors, and a bug fix for running on some systems with controllable charge speeds. ** Also affects: power-profiles-daemon (Ubuntu Noble) Importance: Wishlist Status: Confirmed ** Also affects: power-profiles-daemon (Ubuntu Jammy) Importance: Undecided Status: New ** Also affects: power-profiles-daemon (Ubuntu Mantic) Importance: Undecided Status: New ** Changed in: power-profiles-daemon (Ubuntu Jammy) Status: New => Confirmed ** Changed in: power-profiles-daemon (Ubuntu Mantic) Status: New => Confirmed ** Changed in: power-profiles-daemon (Ubuntu Noble) Status: Confirmed => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2008958 Title: please backport 0.21 to jammy To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/power-profiles-daemon/+bug/2008958/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
