Okay, just ruled out LVM as culprit - the problem persists with the drive effectively blank (no partitions, just a GPT table). Also of importance: 1) Mainline kernel 2.6.38-rc3 behaves the same way. 2) Disabling APM on the drive (hdparm -B 255) makes -y and -Y options work again. 3) This is the same behavior as in squeeze - the difference is that on squeeze, APM is off by default.
This raises the question "Is the manual spindown (-y/-Y) supposed to work with APM enabled"? The aforementioned Barracuda ATA doesn't support APM at all, so I tried an old Travelstar (IC25N040ATCS05-0). Spindown with APM enabled works on it. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/701144 Title: [natty] Cannot spin down hard drives -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
