Frame.work laptop battery info

index.md

@@ -28,4 +28,6 @@
 
 [audiomass](audiomass/src)
 
+[laptop battery](reads/battery.md)
+
 [survival-manual](survival/Home)

reads/battery.md

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+[Source](https://community.frame.work/t/battery-life/861/12)
+
+For Linux you have much more control if you wanted to control the power envelope yourself. you can use the sysfs interface for the intel-rapl driver to adjust the power limits:
+Eg you can set your PL1 (long term) and PL2 (short term) power limits in uW:
+echo 1 > /sys/class/powercap/intel-rapl:0/enabled
+#PL1
+echo 28000000 > /sys/class/powercap/intel-rapl:0/constraint_0_power_limit_uw
+#PL2
+echo 64000000 > /sys/class/powercap/intel-rapl:0/constraint_1_power_limit_uw
+
+From what I have found there is not a good way for the major window managers to control power profiles that are built into gnome/kde/etc. But it would be interesting to explore more.
+You can read about the interface here, it is pretty cool because you can also use this to monitor power usage too:
+https://www.kernel.org/doc/html/latest/power/powercap/powercap.html
+
+There are a few mentions of intel projects for linux.
+
+https://01.org/linux-thermal-daemon/documentation/introduction-thermal-daemon
+
+https://github.com/intel/dptf
+
+https://01.org/blogs/2014/running-average-power-limit-%E2%80%93-rapl

reads/guides.md

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 [Command Line Interface Guidelines](https://clig.dev/)
 
+[Compression Comparison](https://linuxreviews.org/Comparison_of_Compression_Algorithms)
+
+[Insane Compression Comparison](http://mattmahoney.net/dc/text.html)
+
 ## Qemu
 
 [Drew Devault's Getting Started](https://drewdevault.com/2018/09/10/Getting-started-with-qemu.html)