I installed TLP to see if it could help with battery life, but found that it caused the laptop to reboot when left idle for a few minutes. Rather than try to figure it out, I simply uninstalled TLP.
I also noticed that when touching the touchpad, a high pitched whine can be heard from the speakers. I wonder if the cause can be found and fixed.
Update: having disabled intel_pstate, I've reinstalled TLP without problem.
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