Comment 200 for bug 1690085

We have been in "indirect" contact with an engineer at AMD who offers this explanation:

> We have been investigating the issue where systems are reportedly locking up
> when idling or running small workloads.
>
> This issue is related to the power supply. Most PC power supplies (PSUs) are
> designed to handle a wide range of power consumption from your PC components,
> but not all PSUs are created equal.
>
> Because of this, there are some rare conditions where the power draw of an
> efficient PC does not meet the minimum power consumption requirements for one
> or more circuits inside some PSUs.
>
> This scenario (called "minimal loading supply") can cause such PSUs to output
> poor quality power, or shut off entirely.
>
> To prevent this issue from happening, it is important to ensure that the
> power supply supports 0A minimum load on the +12V circuit. These PSUs became
> commonplace starting in 2013 for the Intel "Haswell" platform.
>
> This specification can be found printed on the sticker affixed to most PSUs,
> or it may be available on the manufacturer’s website.
>
> However, AMD understands that not everyone is in a position to replace their
> PSU with a contemporary 0A-rated unit. To help with that, AMD is also
> developing a firmware workaround for these power supplies, and will make it
> available through motherboard partners as a BIOS update in the future.

You guys buy this?