SATA/USB3 issues with PCIE Slot #2

Discussion in 'Mac Pro' started by handheldgames, Dec 21, 2013.

  1. handheldgames macrumors 65816


    Apr 4, 2009
    On my 2009 MacPro, I've tracked down an issue with PCI Slot #2, where it drops ACHI devices while in sleep, upon resume the devices are lost and no longer available to the system.

    • boot devices hang the OS.
    • external devices are ejected and remounted
    • fresh install of 10.9.0, updated to 10.9.1
    • 100% reproducible with SATA Express, USB3 controllers.

    I've reported this issue to Apple in the past, and they blamed the device manufacturer. This appears to be an issue isolated to slot #2 and not a result of a an individual product. Anyone else have any issues with Slot 2?
  2. jenzjen macrumors 68000

    Aug 20, 2010
    What do you mean boot devices hang the OS? I have my x2 in slot 2 and notice that my machine will no longer sleep properly (it will sleep initially but will awake on its own after some time).
  3. handheldgames thread starter macrumors 65816


    Apr 4, 2009
    Let me clarify, I'm running a SATA Express PCIE SSD in slot #2 that I boot off of. After sleep, that device is no longer available when the system resumes. I've also had issues with a Samsung 840Pro Raid 0 with 2x velocity 2 adapters that exhibits the same behavior if I'm using slot #2.

    Running in slot #3, there are no issues.


Share This Page