The issue here is the "hdparm" command is launched by udev. It then attempts to try to activate ata pass through. This then causes the drive to fail. bug 515023
But disabling hdparm from being lauched by udev gets around the issue. Then the drive works fine. I tested the latest hdparm (9.28) and still see it trying to do ata pass through. -- Some firewire disks not working under 10.04 https://bugs.launchpad.net/bugs/548513 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs