Hello, Mathieu Bérard wrote: > [ 15.031823] ata1.00: taskfile_load_raw: (0x1f1-1f7): hex: 10 03 00 00 > 00 a0 ef Okay, this is interesting. This is Enable Device-Initiated Interface Power State Transitions. So, after this command is executed the device will try to transit to partial/slumber SATA PHY power states at its discretion, which is all cool and dandy in theory but depending on controller and drive firmware can cause all sorts of problems. The NCQ problem you're seeing probably is some side effect of device initiated link PS. Can't tell whether the controller or the drive's firmware is problem without further info. Due to blacklisting, NCQ won't be turned on your drive in future kernels and link PS doesn't seem to cause any problem no non-NCQ, so your case is taken care of here but this leaves me a bit worried about what _GTF feeds us. I don't think we can reliably filter out command TFs as it might even contain vendor-specific commands but it might be better to always log TFs executed for _GTF such that we at least know what's going on with the drive. Thanks. -- tejun - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
