There are definitely at least *some* BIOS problems with the 5470. For
example, it seems to have clock speed issues (where the CPU clock speed
will stay between 400 MHz - 800 MHz) which I have to resolve using
either `wrmsr -a 0x19a 0x0` or `cpupower frequency-set -g performance`
or both.

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https://bugs.launchpad.net/bugs/1661741

Title:
  [Dell Inc. Latitude E5470] suspend/resume failure

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