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On Thu, 13 Jul 2006 21:30:28 -0700 "Allen Martin" <AMartin@nvidia.com> wrote: > I'm not sure why parsemce says this is a parity error, it's a K8 virtual > northbridge watchdog timeout on an I/O transaction. In other words a > CPU PIO transaction to some device timed out, the timeout is usually set > to 10s. Prior to K8 these types of errors would usually be system > hardlocks. > > I've debugged a few of these before and they usually end up being IDE > device issues. The IDE controller is really thin (the ATA registers > actually reside in the device) so for example if the CPU goes to read > the ATA status register of some device and the device doesn't respond, > the PCI transaction won't be terminated and the watchdog will fire. > > -Allen Hmm, this is informative, thanks a lot! Actually what I've g00gled about the issue so far it seems that only Nforce4 + A64 users used to get exactly the same error, some are indeed suggesting NF4 is buggy when it comes to IDE DMA... Isn't it possible that this is some NF4 specific problem, a chipset bug or a motherboard design issue (some sporadic signal distortion problem) that is specific to some but not all NF4-based motherboards? In fact this particular system I'm having the problem with contains the following parts: 1x Asrock NF4G-SATA2 motherboard (http://www.asrock.com/product/939NF4G-SATA2.htm) 1x Athlon64 "Venice" 3500+ with a huge Arctic cooler 1x Corsair kit of 2 matched 512MB DDR400 modules 1x Seagate 160GB SATA drive 1x well ventilated Chieftec rackmount chassis w/PSU The former three are brand new, none of them was ever overclocked or otherwise tortured, the latter two are reliably working since years. The environmental temperatures were optimal at the time the panic occurred, so it probably was not a heat related issue. In fact the system was rather unloaded (idling around 3AM). The uptime was about two weeks without any problem until the panic occurred. So I have a reason to believe that this could be a chipset specific problem which not only affects me but quite a number of NF4 users, most of which (using Windo$$$) will probably never know why their system suddenly hung after some weeks or months of use... Or maybe just a neutrino hit to the CPU? What do you think? Regards, Sab - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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