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Date: Fri, 9 Jul 2010 23:53:25 +0200 From: "Rafael J. Wysocki" <rjw@...k.pl> To: Stephan Diestelhorst <stephan.diestelhorst@...il.com> Cc: Tejun Heo <tj@...nel.org>, linux-kernel@...r.kernel.org, linux-ide@...r.kernel.org, linux-pm@...ts.osdl.org Subject: Re: HDD not suspending properly / dead on resume 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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