On Fri, Dec 30, 2016 at 12:20:34AM +0100, Kilian Singer wrote: > The echo on > /sys/bus/pci/devices/0000:00:01.0/power/control > > did not help. > > Also I noticed on each boot directly after initramfs I get > mmc0: Unknown contrller version. You may experience problems. > > On all versions of the kernel. Hm, that rings a bell. The MMC controller is located below root port 0000:00:1c.0, which has vendor/device ID 8086:8c10. We're having trouble with the exact same root port on 2015 MacBook Pros where it mysteriously prevents them from powering off: https://bugzilla.kernel.org/show_bug.cgi?id=103211 http://www.spinics.net/lists/linux-pci/msg53460.html Does this help: echo on > /sys/bus/pci/devices/0000:00:1c.0/power/control Thanks, Lukas -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html