Re: Abysmal HDD/USB write speed after sleep on a UEFI system

[Patrik Jakobsson]

On Wed, May 8, 2013 at 10:37 AM, Artem S. Tashkinov <t.artem@xxxxxxxxx> wrote:
>>I think this is the official statement from Intel on the SATA issue:
>>http://newsroom.intel.com/community/intel_newsroom/blog/2011/01/31/intel-identifies-chipset-design-error-implementing-solution
>
> My motherboard has a new fixed B3 revision so this issue doesn't affect me.
> Besides this SATA ports degradation issue is constantly present - it has no
> relationship to suspend.

Yes, Rev. B3 should be fine.

>>And here's a link to a discussion about the PCIe-to-PCI bridge stuff:
>>https://lkml.org/lkml/2012/1/30/216
>>
>>> Artem's system has a PCIe-to-PCI bridge (not a PCI-to-PCIe bridge) at
>>> 05:00.0, but it leads to [bus 06] and there's nothing on bus 06, so I
>>> don't think that's the problem.
>>
>>I meant what you said ;) and yes, it seems unrelated. Both my P8H67 and a
>>P8P67 I've built behave nicely if nothing is connected.
>
> Have you tried suspending more than three times? In the absence of UEFI
> boot this bug emerges only on a third or even fourth resume attempt. UEFI
> boot triggers it immediately on a first resume though.

I haven't enabled UEFI boot but did ~10 suspend/resume cycles with no issues.
I'm on 3.9-rc5 if that makes a difference. I'll do some more testing with
various kernel versions to see if I can trigger it.

-Patrik
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/