Volker Armin Hemmann wrote:
quoted text
> it was for a little bit more than 24h. I booted and rebooted several times to 
> make sure - and everything was fine, but after a good night and on the Xth 
> boot, the hang occured again - and since then it is there. Reliable on every 
> boot :( 
> (and the softreset failed message on reboots).
> Of course, I booted and rebooted several times. And it stays.
> 
> Maybe it is the hardware. But I replaced the cables already and smart says the 
> disk is ok.

Does the attached patch make any difference?

quoted text
>>> Setting AHCI in bios still results in timeouts and harddisks not found.
>> Does pci=nomsi help?
> 
> oh yes!
>  It does. I changed the 'Sata operation mode' setting from 'non raid' to AHCI, 
> booted with that option:
> 
> the most obvious change are the different interrupts: 23 instead of 315 
> (non-raid, without nosmi) or 218 (systemrescuecd 1.0, ahci setting, without 
> nosmi)

Yeah, that sounds about right.  Hmm... Can you post the result of "lspci
-nn"?

-- 
tejun