Re: ACPI on Compaq 6715b - BIOS from the wrong end of the planet

[Richard <tuxbox.guru@gmail.com>]

Thomas Renninger wrote:
> On Sun, 2008-04-27 at 10:06 +0100, Richard wrote:
>   
>> Hi all,
>>
>> Pardon for the intrusion, I am trying to fault find a horrible wrong 
>> ACPI interface and fix it.
>>
>> the problem is as follows... 
>>
>> Kernel 2.6.23 works fine, except there is no stable clocksource.. 
>> acpi_pm, tsc doesnt work and jiffies .. well thats just jiffies. The 
>> kernel boots but time sources are erratic and this results in an 
>> unstable clock (Mp3's play at erratic speeds)
>>
>> Kernel 2.6.25 hangs the system if I enable ACPI Timer and rebuild/boot 
>> the new linux kernel. The only clock sources are tsc and jiffies and TSC 
>> is disables due to being erratic. If I totally disable ACPI, the kernel 
>> boots and works with stable clocks..  but obviously Power management is 
>> gone.
>>
>> The system is an ATI bridged AMD Sempron notebook. I have tried Millions 
>> of options in the kernel bootup and none seem to do clear the problem. 
>> This system seems to suffer from the Clocks fast bug. (the dmesg reports 
>> that the 8254 clock is disables, IO-APIC int0 fails and IO-APIC Vritual 
>> wire is OK.. if that means anything :D)
>>
>> Any pointers.. and if anyone wants the AML/ACPI stuff, please feel free 
>> to shout.
>>     
> Does:
> disable_timer_pin_1
> or
> noapictimer
> work?
>
>    Thomas
>
>
>   

Thanks a Million..
noapictimer works perfectly ... BUT  .. only on 64Bit.  acpi_pm is not 
present on 32bit as a clocksource and it defaulted to jiffies. (tsc was 
marked as imreliable)

I am really surprised that this Sempron notebook actually had 64Bit CPU 
compatibility :D

Richard