Over the past few weeks I've been experiencing problems with
suspend/hybrid sleep on my laptop (a Clevo N240BU, Intel Core
i7-7500U). Instead of the suspend process completing normally, the
computer hangs with a blank screen and the CPU fan spinning above idle.
I have to forcibly power off the computer to get it to turn off. If I
invoke hybrid sleep, the hibernation image is intact and I am able to
resume from that after powering the computer back on.
I bisected the issue, and traced it to commit
dfe0cf8b51b07e56ded571e3de0a4a9382517231. Before that commit, suspend
works reliably, but afterward it hangs most of the time. I verified
that the problem still exists in version 5.4.5, but have not tested the
latest master.
If there is any more information that would be useful or if I can help
to resolve this issue in any way, please let me know.
Regards,
Daniel Harding