Kernel panic when unpluggin AC adaptor

[Rui Paulo]

On 4 May 2010, at 21:38, Kostik Belousov wrote:

> On Tue, May 04, 2010 at 10:27:23PM +0200, David DEMELIER wrote:
>> 2010/5/4 Kostik Belousov <kostikbel at gmail.com>:
>>> On Tue, May 04, 2010 at 06:35:52PM +0200, David DEMELIER wrote:
>>>> Good news ! It worked, check the picture here :
>>>> 
>>>> http://img63.imageshack.us/img63/4244/dsc00361g.jpg
>>> 
>>> Please try adding code fragment like this:
>>>        if (cx_next->p_lvlx == NULL)
>>>                printf("Going to panic.\n");
>>> to  dev/acpi/acpi_cpu.c:acpi_cpu_idle() function, right before
>>>    CPU_GET_REG(cx_next->p_lvlx, 1);
>>> line and see if it prints the message immediately before the panic.
>>> 
>> 
>> Yes it does at the beginning of the kernel panic.
> 
> Ok, so the point of panic is found, it is NULL cx_next->p_lvlx resource.
> With the data in hand, I recommend you to ask on acpi@ (added a Cc:)
> about the cause and possible solution.

I don't remember the details, but I've seen this before. Does your CPU Cx levels change when you plug/unplug the AC adapter?

Regards,
--
Rui Paulo