I run Fedora on a Thinkpad X1C Gen 3. tlp[1] has been, by far, the best tool in optimising my power usage. powertop for some monitoring, as these days it recomm

I run Fedora on a Thinkpad X1C Gen 3. tlp[1] has been, by far, the best tool in optimising my power usage. powertop for some monitoring, as these days it recommends some less than ideal tunables, especially with regards to SATA power management ("med_power_with_dipm" vs "min_power" [2][3]). Some modules also have blacklists that prevent certain power saving modes from being enabled. This is true for the snd-hda-intel module to prevent a well known popping sound. Since disabling the blacklist, I haven't encountered the issue however YMMV. Similarly to enable ASPM on the PCIE bus, I've had to force it via a kernel parameter. With regards to the GPU, I noticed my Intel GPU can scale its frequency between 300mhz and 950mhz but the default minimum was set to 350mhz. Other such tweaks such as enabling frame buffer compression [4], can save you a few more watts. While the Linux defaults does its best to be suitable across different hardware configurations, you'll have to meddle with many parameters to get it customised to your configuration, and that could bring some instability with it so exercise some caution. Oh, and also be mindful of the apps you run. The Great Suspender for Chrome can save you some watts, cpu and memory by suspending tabs that are not in use. And switching to a light desktop such as Sway or i3 can also do wonders. As I type this, my battery is reporting a draw of 3.1 watts, 30% battery remaining with 4:40 of operating time at the current workload. [1] - https://wiki.archlinux.org/index.php/TLP https://wiki.archlinux.org/index.php/TLP [2] - https://hansdegoede.livejournal.com/18412.html https://hansdegoede.livejournal.com/18412.html [3] - https://wiki.archlinux.org/index.php/Power_management#SATA_Active_Link_Power_Management https://wiki.archlinux.org/index.php/Power_management#SATA_A... [4] - https://wiki.archlinux.org/index.php/Intel_graphics#Framebuffer_compression_(enable_fbc) https://wiki.archlinux.org/index.php/Intel_graphics#Framebuf...