On Fri, 2008-02-15 at 13:46 +0000, Hugo Mills wrote: > I'm getting these on my Dell Latitude D830: > > Feb 15 13:06:00 willow kernel: ata1.00: exception Emask 0x2 SAct 0x4 SErr 0x0 action 0x2 frozen > Feb 15 13:06:00 willow kernel: ata1.00: spurious completions during NCQ issue=0x0 SAct=0x4 FIS=004040a1:00000002 > In some cases, there are several cmd/res lines listed. It's > happening about once an hour or so (not correlated with any other > event that I can see). It doesn't seem to be affecting operation of > the machine, but it's making me nervous. > > Can anyone set my mind at rest? (Or suggest a fix?) You didn't mention which SATA chipset your laptop has, but some quick googling says that it's AHCI. Until 2.6.24, the AHCI driver has a problem where it'll report superious NCQ completions due to a bug in the driver logic. > uname -a reports: > Linux willow 2.6.23.1-hrt3 #1 SMP Sun Nov 4 14:51:20 GMT 2007 x86_64 GNU/Linux The fix is simple, upgrade your kernel to 2.6.24 :) > It's a kernel.org kernel with the patch for tickless operation on > amd64. Handily, the 2.6.24 kernel.org kernel includes amd64 tickless support already. -- Calvin Walton <calvin.walton@xxxxxxxxx> - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
