Dell ACPI & S3 resume problems.

[Mark Kirkwood]

Rui Paulo wrote:
> On Wed, Jul 02, 2008 at 05:14:30PM +0200, Olivier Fauchon wrote:
>   
>> Hi,
>>
>> When I try to resume from S3 on my DELL Latitude D430 by pressing power 
>> button, the laptop reboots.
>>
>> I tried the same test with a Knoppix Live CD, and It passes (Laptop 
>> revives although LCD is buggy).
>> But I could type "shutdown -r now" blindly, to confirm it wakes up properly.
>>
>> Now I need help to find out the differences between FREEBSD and LINUX 
>> which makes resume fail.
>>
>> You'll find here all collected informations:
>>
>> * Verbose Booting with FreeBSD7  
>> http://www.aixmarseille.com/pub/acpi_fb7_casino/boot_verbose_d430_FB7.log
>> * Booting with Knoppix dmesg  
>> http://www.aixmarseille.com/pub/acpi_fb7_casino/dmesg_knoppix_d430.log
>> * Dell LAtitude D430 original ASL: 
>> http://www.aixmarseille.com/pub/acpi_fb7_casino/dell-d430.orig.asl
>> * Patched ASL (which only correct a LID and warning problems) 
>> http://www.aixmarseille.com/pub/acpi_fb7_casino/dell-d430.patched.asl
>> * Kernel configuration : 
>> http://www.aixmarseille.com/pub/acpi_fb7_casino/kern_conf_CASINO.txt
>> * lspci : http://www.aixmarseille.com/pub/acpi_fb7_casino/lpsci.txt
>>
>> Can someone explains me what are the main steps of a resume, so I can 
>> try to troubleshoot further.
>>     
>
> Well, your best bet is to disable every driver and make them modules. Boot
> with the bare minimum necessary for input/output and in single user mode.
> Try suspend and resume in single user mode. If that works, the problem, 
> most likely lies in the drivers.
>
> Try enabling one driver at a time, and retest suspend/resume. This way
> you can find the problematic driver, if any.
>
> Also, try changing the hw.acpi sysctls, namely reset_video.
>
> HTH,
>   

 From your dmesg it looks like you are running both cores (i.e smp 
kernel). Try disabling one core via kern.smp.disabled=1 in loader.conf 
(some laptops will not suspend properly with both cores running).

Cheers

Mark