I looked through the 4.8.15 changelog on https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.15
And I found this which is seems to be exactly my problem resolved:
commit d271b9bec2d3e7bd9a66d4b5437476f3406bbf73 Author: Rafael J. Wysocki <email address hidden> Date: Mon Nov 21 14:25:49 2016 +0100
Revert "ACPI: Execute _PTS before system reboot"
commit 9713adc2a1a5488f4889c657a0c0ce0c16056d3c upstream.
Revert commit 2c85025c75df (ACPI: Execute _PTS before system reboot) as it is reported to cause poweroff and reboot to hang on Dell Latitude E7250.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=187061 Reported-by: Gianpaolo <email address hidden> Signed-off-by: Rafael J. Wysocki <email address hidden> Signed-off-by: Greg Kroah-Hartman <email address hidden>
I looked through the 4.8.15 changelog on https:/ /cdn.kernel. org/pub/ linux/kernel/ v4.x/ChangeLog- 4.8.15
And I found this which is seems to be exactly my problem resolved:
commit d271b9bec2d3e7b d9a66d4b5437476 f3406bbf73
Author: Rafael J. Wysocki <email address hidden>
Date: Mon Nov 21 14:25:49 2016 +0100
Revert "ACPI: Execute _PTS before system reboot"
commit 9713adc2a1a5488 f4889c657a0c0ce 0c16056d3c upstream.
Revert commit 2c85025c75df (ACPI: Execute _PTS before system reboot)
as it is reported to cause poweroff and reboot to hang on Dell
Latitude E7250.
Link: https:/ /bugzilla. kernel. org/show_ bug.cgi? id=187061
Reported-by: Gianpaolo <email address hidden>
Signed-off-by: Rafael J. Wysocki <email address hidden>
Signed-off-by: Greg Kroah-Hartman <email address hidden>