Re: HDD not suspending properly / dead on resume

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On Friday, July 09, 2010, Stephan Diestelhorst wrote:
> I wrote:
> >   I have an issue with suspend to RAM and I/O load on a disk. Symptoms
> > are that the disk does not respond to requests when woken up, producing
> > only I/O errors on all tested kernels (newest 2.6.35-rc4 (Ubuntu
> > mainline PPA build)):
> > 
> <snip>
>  
> > This can be triggered most reliably with multiple "direct" writes to
> > disk, I create the load with the attached script. If the issue is
> > triggered, suspend (through pm-suspend) takes very long.
> 
> Attached now...
> 
> > IMHO the interesting log output during suspend is:
> > [ 1674.700125] ata1.00: qc timeout (cmd 0xec)
> 
> Almighty google suggested to try "pci=nomsi", which seems to have
> cured the issue for me for now. Is that plausible? I'll keep this
> under observation.

Hmm.  How does your /proc/interrupts look like?

Also, do you have a link to this "Google suggestion"?

Rafael
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