Hi! You may want to cc maintainers... M: "Rafael J. Wysocki" M: Pavel Machek L: linux-pm@vger.kernel.org > I have a MacBook Pro 12,1 model where I've hit a regression since > upgrading to 5.2.x. When I enter hybrid-sleep mode with "systemctl > hybrid-sleep", the laptop appears to enter suspend (screen turns off > and keyboard backlights go out) but actually is still on with the CPU > fan powered off. > > When I first noticed this, I had put my laptop away in my bag and > noticed it got extremely hot to the point of being dangerously close > to a fire hazard. It was too hot to touch and would not resume > successfully either from suspend or, after powering off, from > hibernate. If you are able to push the CPU over 100C, it is a hardware bug. Hardware should protect itself. > I've had no issues on 5.1 through 5.1.16 but every version of 5.2.x > I've tried (5.2 through 5.2.8) has exhibited this problem. Is there a > known regression in suspend handling in the kernel? I noticed some > traffic about suspend and NVMe devices but I do not have an NVMe > drive. > > If nobody else has reported this issue, I would be glad to do a bisect > to help resolve it. You may want to try latest 5.3-rc and -next... And perform basic debugging such as making sure that normal suspend works and normal poweroff works. But yes, if you can bisect it, it will make stuff easy... Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html