hdparm -Y puts the drive to SLEEP, not STANDBY. In SLEEP mode, no commands at all, including hdparm -C can be issued, so even trying that causes it to be woken up. Use hdparm -y instead.
I had tried patching the kernel to emulate the check power status command in software when the kernel knows it has ordered the drive to SLEEP to avoid this, but I don't think the patch was accepted upstream and I kind of forgot about it. Also try killing your udisks task and see if that allows the drive to auto standby. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1281588 Title: Disk standby timer is broken To manage notifications about this bug go to: https://bugs.launchpad.net/udisks/+bug/1281588/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
