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I'm trying to get the tp_smapi module working on my Thinkpad T440p for battery thresholding with tlp. However, when I run sudo tlp-stat -b it returns tp-smapi = inactive (kernel module 'tp_smapi' load error). I've tried forcing the thinkpad_ec and tp_smapi kernel modules to load in /etc/modprobe.d like recommended on the thinkwiki. I've also read that there are alternatives to tp_smapi and that is not compatible with 4th generation Intel processors. I'm about to purchase a new 9-cell battery and would like get battery thresholding working for more longevity. Does anyone know how to obtain working battery thresholding on the Thinkpad T440p?

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I suggest you just implement TLP's installation instructions completely and install acpi-call:

sudo apt-get install acpi-call-dkms

You may also refer to the FAQ for ThinkPad battery troubleshooting.

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If you are still facing the problem, http://linrunner.de/en/tlp/docs/tlp-faq.html maybe of help. Essentially, the point is your model may not be supported fully. But, you may go ahead and purchase that 9 cell battery and use it without apprehensions of a reduced life, because tlp takes care of whatever is amiss.

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