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PCIe, power management, and problematic BIOSes

PCIe, power management, and problematic BIOSes

Posted Jun 29, 2011 16:57 UTC (Wed) by cesarb (subscriber, #6266)
In reply to: PCIe, power management, and problematic BIOSes by nix
Parent article: PCIe, power management, and problematic BIOSes

There is always the possibility that SMM is playing with you, especially if it is onboard...


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PCIe, power management, and problematic BIOSes

Posted Jun 30, 2011 12:35 UTC (Thu) by nix (subscriber, #2304) [Link]

This seems unlikely. Before 2.6.36 (I think it was) when the kernel started activating ASPM systemwide, ASPM was turned off on this card and it never failed (well, not due to *this* problem anyway). So this would have to be an SMM that kicks in only if ASPM is turned on... it looks like ASPM is being reset when the interface is brought up or something, and I know the kernel knows about this because it prints a message. So, no, this really does look more like a kernel bug to me.


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