Comment by yjftsjthsd-h

To echo the other comments - I'm reasonably confident that the Linux kernel is perfectly capable of handling sleep, the problem is varied hardware support. Consider that every Chromebook and Android device on the planet is running a Linux kernel, and they have no trouble. Likewise, I don't think I've ever had Linux struggle with sleeping on a thinkpad, and the best suspend/resume experience I've ever had was Linux on a random Lenovo laptop a while back.