With an upgrade to Natty (2.6.38-9-generic #43-Ubuntu SMP) this is now working. I didn't think this was power related (in my case anyway) as I had tried multiple power supplies and the system has got 2 HDD, processor and memory, everything else onboard. I've full RAID1 running on both disks with no issues.
Motherboard: ASUS M4A78-HTPC HDD: 2x Hitachi HD DESK 1TB 3.5" 7200 SATA 32MB -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/550559 Title: hdd problems, failed command: READ FPDMA QUEUED -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
