> Are you running udisks? If so then that is the culprit. It polls the > drive's SMART stats every 10 minutes unless the drive is already > asleep, so if the timeout is>= 10 minutes ( which it seems WD drives > refuse to go any lower anyhow ), then the drive will never go to > standby. I posted some patches to fix this a while back on the > devkit-devel mailing list but I think the udisks maintainer has still > not gotten around to applying them. This is indeed the cause in my case. There are the two problems that overlap: if a shorter time then 10 minutes is set as a standby time, the WD disk rounds this up to 10 minutes. And Kubuntu is using udisksd. It is started during a KDE login and never stopped when logging out. Is it possible to configure udisks to not do any polling or at a much longer interval? Or is it possible to safely disable udisksd somehow? I'm still looking for a practical solution. regards Patrick -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
