This behaviour still seems to be present in 17.04. I have a secondary drive (ST3500418AS) that is isn't mounted and should remain asleep. It doesn't go to sleep unless I force it with "hdparm -Y /dev/sdb". There is something that happens every 10 minutes that will wake up the drive.
I think there is something wrong with libatasmart because just checking the state seems to change the state (Heisenberg?). Running "hdparm -C /dev/sdb" will actually wake the drive up. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to udisks2 in Ubuntu. https://bugs.launchpad.net/bugs/1281588 Title: Disk standby timer is broken Status in udisks: Fix Released Status in udisks2 package in Ubuntu: Fix Released Status in udisks2 source package in Trusty: Confirmed Bug description: udisks' / gnome-disk-utility's support for the drive standby timer is broken. If the standby timer is set to at least 10 minutes ( which is the minimum on many drives ), every 10 minutes udisks tries to update the smart status of the drive, which resets the standby timer. To manage notifications about this bug go to: https://bugs.launchpad.net/udisks/+bug/1281588/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
