Readman_HE
Level 1 (0 points)

Q: solution and problem about USB port shutdown in thunderbolt

Problem:

Recently, i find that all USB port, audio in my thunderbolt have been disabled and when i restart computer, it will work for a while, i play a song, the audio go through display for a while, then go to Internal Speakers. In System Preferences -> Sound -> Output, i find that Display Audio disappeared. i googled online, i find that USB ports are disable as same time. I went to Apple Store, changed logical board, it DOES'T work. I called them, THEY DO NOT KNOW WHAT HAPPENED.

 

What i do:

To my knowledge, the thunderbolt display connect to my Macmini by thunderbolt port, the OS recognize thunderbolt as two logical ports, one is video and another is USB ports(just like usb hub). the audio is belong to USB ports. Therefore, i guess that the problem is software, not hardware.

 

Solution:

If you have this prolbem, please do not apply any update after 4 april 2012, the files include Java update for OS X 2012-001 to 003, also a flash play update( it is maybe the flashback virus). I am not sure which one cause the problem. Because my work, i have to use time machine every half day to backup my computer, so i restore my OS and find the solution.

 

I hope it help you.

 

Readman

Display, iOS 5.1

Posted on Apr 15, 2012 10:54 AM

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Readman_HE

Q: solution and problem about USB port shutdown in thunderbolt

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  • by X423424X,

    X423424X X423424X Apr 15, 2012 1:02 PM in response to Readman_HE
    Level 6 (14,237 points)
    Apr 15, 2012 1:02 PM in response to Readman_HE

    For most users I don't agree with the above recommendation.  The latest Java updates address the security holes being utilized by the current strains for the flashback trojan and also attempt to remove it if you are infected.  So here's yiour choices:

     

    1. Must you have sound coming out of your display's not-so-good speakers vs. alternative better sound systems?  If so take your chances, or,

     

    2. Install the updates to at least check for the trojans (or at least use F_Secure's Flashback Removal Tool) but turn Java off.  Turning Java off is the general recommandation anyhow, no matter whether you update or not.

     

    3. If you must use Java, and don't update it, risk the possibility of getting one of the flashback trojans and possibility compromising your on-line security.  Here too turn Java off in at least the browsers you use.

  • by Readman_HE,

    Readman_HE Readman_HE Apr 15, 2012 1:10 PM in response to X423424X
    Level 1 (0 points)
    Apr 15, 2012 1:10 PM in response to X423424X

    Hey here,

    I am using Mac mini and thunderbolt display.  i can use a better speaker, like Bose. HOWEVER, i find that, if the problem exist, i can not sleep my computer. when i put my computer sleep, after 2mins, it will wake itself. I am not sure it is only my problem or not. But it kill me.