Hi Chris, One of our OEM partners would like the backport to focal for finer thermal control on Tiger Lake platforms, so it's a really useful feature set to have for these newer devices. This requires the backport of the newer adaptive engine, hence the size of the backport. We have had the OEM partner exhaustively test this on the target hardware and we've been soak testing this backport on various platforms and checking for subtle memory leaks etc for extended run periods, so the SRU'd backport is well testsed.
A wholesale backport of 2.4.3 thermald is possible - however it's less well tested (had less time to bake in Hirsute) so I'm more reluctant to backport this at the moment. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to thermald in Ubuntu. https://bugs.launchpad.net/bugs/1913186 Title: Backport the adaptive engine from v2.4.1 upstream Status in thermald package in Ubuntu: New Status in thermald source package in Focal: In Progress Status in thermald source package in Groovy: In Progress Bug description: Impact: DPTM provides an adaptive power policy that allows for improved integration between the platform and the OS. Firmware can provide a set of complex conditions to the OS, and an OS agent (in this case thermal_daemon) is responsible for evaluating them, potentially making use of information that is easily available to the OS and not the firmware. The agent evaluates each set of conditions in turn, and once the first evaluates completely it triggers a set of actions. Fix: Backport the adaptive engine (and all its dependencies) from upstream v.2.4.1 Regression potential: Both Focal and Groovy backports are substantial (Focal in particular is pretty large), so there's definitely a regression potential. On the other hand, the entire patchset is a clean backport, taking no shortcut or trying to adapt any patch, but rather picking up all the necessary dependencies to make the entire stack apply cleanly. -- To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thermald/+bug/1913186/+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
