How to install GNU/Linux on the Panasonic Toughbook (FZ-40 / FZ-40CCAABKM) with almost(!) full hardware support (digital microphone, GPS, SIM card install documented but untested, touch screen, touchpad, webcam confirmed unsupported as
Rugged PC Review.com - Rugged Notebooks: Panasonic Toughbook CF31
Invalid signature detected. Check Secure Boot state in Setup” error | Support is >Here
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How to Install Ubuntu on a Panasonic Toughbook CF-31 - Bob Johnson's Computer Stuff, Inc.
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