FC5: Asus P5-B AHCI (sata) not working with kernel 2.6.17-1.2174smp but fine with 2.6.15-1.2054smp

[Rainer Traut]

Hi,

the problem is on our new home pc, specs:
Intel Core2 Duo 6600, 2GB RAM, 300GB SATA AHCI Mode
Asus P5-B motherboard,latest bios, Intel ICH8R

The system boots fine with the old initial kernel but panics after 
running a full update.

As I recall here's the console output:
PCI: Bios Bug: MCFG is not E820 reserved
PCI: Not using MMCONFIG
nash...
(ata1) timed out after 30seconds
...
kernel panic

The hd light is flashing slowly...

So I believe there's something broken with ahci support in later kernels.

Thx for any help
Rainer