Someone wrote in [personal profile] mjg59 2016-04-13 11:17 pm (UTC)

Firmware?

What firmware are you on? IIRC anything before 1.1.7 incorrectly initialized the PCIe links, which broke ASPM and therefore prevented any deep sleep state from being entered.

NVMe power saving is still unimplemented on Linux, but I might get around to that soon if no one beats me.
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