AFAIK, the issue with hibernation, partly at least, is because they don't provide an alternative sleep method via firmware. Only the default method is availabl

AFAIK, the issue with hibernation, partly at least, is because they don't provide an alternative sleep method via firmware. Only the default method is available; e.g. S2idle on Linux. I was about to link to a discussion about that, but that seems to be gone as well. The relevant kernel docs here: https://www.kernel.org/doc/Documentation/power/states.txt https://www.kernel.org/doc/Documentation/power/states.txt