Kernel Bug Tracker – Bug 42749
Dell Precision M6600 laptop doesn't reboot on kernel 3.2
Last modified: 2012-07-14 15:32:39 UTC
Created attachment 72334 [details]
Laptop's name : Dell Inc. Precision M6600
Reboot stopped working with kernel 3.2.
Adding reboot=pci fixes reboot.
I guess a patch would look like that :
Did this work in any version of Linux before 3.2?
If so, what is the latest version that worked?
please attach the output from dmidecode
BTW. there are a bunch of ACPI EC errors in your dmesg.
It might be a good idea to file a separate bug on them.
Reboot worked fine before 3.2.
Kernel 3.1 is the lastest version that works.
Created attachment 72401 [details]
Created attachment 72447 [details]
PCI reboot quirk for Dell Precision M6600
please check if this patch works for you or not.
This patch works for me, the laptop reboots fine without reboot=pci now.
I'll add the new dmesg output just in case.
Created attachment 72470 [details]
dmesg with patch
A patch referencing this bug report has been merged in Linux v3.5-rc5:
Author: Zhang Rui <firstname.lastname@example.org>
Date: Mon Feb 20 14:20:06 2012 +0800
ACPI, x86: fix Dell M6600 ACPI reboot regression via DMI