[ltp] ACPI and TP 770

[Andre Timmermann]

Hi,

Am Mi, den 28.04.2004 schrieb Andrew Gaffney um 2:02:
> Does the Thinkpad 770 support ACPI? I'm running a 2.6.4 kernel. I've enabled all the ACPI 
> related options in the kernel, but I'm still not getting a /proc/acpi.
> 
> I checked my kernel logs from past boots with 'cat /var/log/messages | grep -i acpi':
> 
> Apr  4 17:04:04 robin BIOS-e820: 000000000a7d0000 - 000000000a7df000 (ACPI data)
> Apr  4 17:04:04 robin BIOS-e820: 000000000a7df000 - 000000000a7e0000 (ACPI NVS)

The following two lines contain the solution:

> Apr  4 17:04:04 robin ACPI disabled because your bios is from 98 and too old
> Apr  4 17:04:04 robin You can enable it with acpi=force

So you have to tell the kernel, that you definitively want to use ACPI
with the kernelparameter acpi=force.

If you use lilo, then you must add acpi=force to your append-line.
If you use grub, then you must add it to the kernel-line.

> Apr  4 17:04:04 robin ACPI: Subsystem revision 20040220
> Apr  4 17:04:04 robin ACPI: Interpreter disabled.
> Apr  4 17:04:04 robin ACPI: ACPI tables contain no PCI IRQ routing entries
> Apr  4 17:04:04 robin PCI: Invalid ACPI-PCI IRQ routing table

I used ACPI on my old TP600 and it works fine. But the features which
are necessary for notebooks (suspend to ram) did not worked. I was able
to use suspend to disk with the appropriate kernel patches.

My new TP R50p is not able to suspend to ram, too. I have read that the
AGP-code in the kernel does not contain working suspend-code.

Greetz,
Andre 

-- 
BOFH-excuse of the day: My pony-tail hit the on/off switch on the power
strip.