Power-saving modes are (unfortunately) a major source of bugs in
hardware, firmware, and drivers. For that reason we should be cautious
about enabling them. Currently device power-saving policies are mostly
set by kernel drivers, and where they enable a power-saving mode by
default they also tend to have long lists of workarounds for buggy
devices.
I don't think a task should include programs that override our kernel's
defaults, as tlp appears to do. If we decide those defaults are bad
then I think we should fix them in our kernel.
As for thermald, I understand that it is important for some newer
laptops. Does it quietly do nothing on other models?
Ben.