5 Replies Latest reply: Jul 18, 2012 3:38 AM by japamac
Pheidius1 Level 1 (0 points)

Hi ,


This thread refers back to a recent post called "onboard firewire fired." I accepted as the correct answer Japamacs input and  references to solving the problem by trashing the Apple IO kexts in that link. Unfortunately, that  caused my Sonnet Tango 800/USB Combo PCI Express card to lose its firewire drivers(though not its USB). Apparently, Sonnet is piggybacking on one more more of the apple IO kexts. So I will reopen the question for discussion. Does anyone have any idea as to which are the most likely kexts to bring the Sonnet card back online though I would still like to disable the onboard thrashing the kernel keep going through looking for a dead component? I am also posting a similar question to Sonnet support and, if they reply definitively, I will update this myself.



PowerMac, Mac OS X (10.5.5)
  • Pheidius1 Level 1 (0 points)



    An update,here: I just restored all the kexts I moved back into the extension folder amnd now the Sonnet card is working again. It is definitly using some of the apple kexts as it installs on Pwermac G5 with no driver CD or download driver from Sonnet's website. So I am back to a working card but still have slow boots and periodic thrashing in the sys logs as it keeps searching for the dead onboard hardware again.

  • BDAqua Level 10 (122,227 points)

    Open Console in Utilities & see if there are any clues or repeating messages when this happens.


    Also, open console in Applications>Utilities, check the system log for the date/time of the last problem for clues.

  • japamac Level 7 (24,390 points)


    Sonnet strikes again. I never had luck with their combo cards.


    Seems odd that PCI is pulling all the kexts. Likely only one or two, but which? PCI IO is a whole different set of kexts.......


    Did you try the Terminal method to kill onboard FW?



  • Pheidius1 Level 1 (0 points)

    Hi all,



    Sonnet support got back to me. Their reply is that the card's support depends on two drivers:

    AppleFWOHCI.kextApple DriverIOFireWireFamily.kext/Contents/PlugIns


    So I guess I can try putting all the others into the diasabled folder and see if that stops the fruitless searching timing out issue.



  • japamac Level 7 (24,390 points)

    Thanks for the update.

    Let us know if leaving the two and trashing the others works.