linux-kernel - Re: acpi regression on some laptops

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Date:	Wed, 11 Jul 2007 22:53:01 +0000
From:	Alex Maclean <monkeh@...keh.net>
To:	Alessandro Zummo <alessandro.zummo@...ertech.it>
Cc:	Chuck Ebbert <cebbert@...hat.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	tglx@...utronix.de, Tim Gardner <tim.gardner@...onical.com>
Subject: Re: acpi regression on some laptops

Alessandro Zummo wrote:
> On Wed, 11 Jul 2007 15:17:25 -0400
> Chuck Ebbert <cebbert@...hat.com> wrote:
> 
>>>  I'm trying to debug it.. any help/pointers are appreciated. I dont't
>>>  have a deep knowledge of the subsystems involved.
>> What options did you try?
>>
>>   nohpet
>>   nohz=off
>>   highres=off
>>
>> Should be tried in various combinations.
> 
>  Hi,
> 
>    I tried all the permutations of the above with the same result:
>  the kernel hangs at NET: Registering protocol family 2.
> 
>  With nolapic it hangs at APIC: Using PIC for interrupt routing
> 
>  With acpi=off it boots but, obviously, everything acpi related
>  does not work.
>  
>  anything else I can try? The laptop does not have a serial port,
>  so I can't capture the dmesg output.
> 

I'm unsure just what hardware you're working with, but try using the 
option nolapic_timer.
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