#762 T400 unable to resume from RAM

Wake from RAM fails on the T400. The device reboots to the Libreboot menu with the sleep (moon) light remaining active. The caps and num lock lights flash briefly just before rebooting.

This is an OS-independent issue as it was reproducible on:

• Artix (OpenRC)
• Parabola (OpenRC) (LTS and hardened kernel)
• OpenBSD
• Parrot OS (systemd)

I flashed the r20160907 release. RAM is from Crucial (8GB PC3-8500 DDR3 1066MHz 1.5V). I also tried adding "iomem=relaxed" to the grub menu without success. Hibernation works fine, though.

This cannot be solved. Just happens on some of those machines; afaik it's dependent on cpu microcode

Just for info: I've tried with and without intel-ucode and it still didn't work.