Ratboy

Q: No Signal on HDMI TV After Lion Upgrade

I just installed Lion on my Mac mini and my TV no longer receives a signal over HDMI. I've tried a bunch of different cobinations of restarting the TV and computer without any luck. Without a display, I can't use Screen Sharing to try chaning any of the prefrences. Does anyone have a solution to this problem? Thanks.

Posted on Jul 21, 2011 1:32 PM

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Q: No Signal on HDMI TV After Lion Upgrade

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  • by DJRumpy,

    DJRumpy DJRumpy Aug 31, 2011 4:59 AM in response to joostvandersluis
    Level 1 (35 points)
    Aug 31, 2011 4:59 AM in response to joostvandersluis

    Sounds like in your case it's just not detecting your TV properly. Try setting it to a 1080P resoltuion via an external monitor prior to hooking it up to the TV, or just remove into it using the VNC method I posted above and change the resolution while it's connected (i.e.  1920 x 1080).

  • by joostvandersluis,

    joostvandersluis joostvandersluis Aug 31, 2011 5:02 AM in response to DJRumpy
    Level 1 (0 points)
    Aug 31, 2011 5:02 AM in response to DJRumpy

    I already tried setting it to 1080p  (and various other resolutions) using another monitor.

    When plugging the mac mini back to my Philips tv, everything goes black again.

  • by DJRumpy,

    DJRumpy DJRumpy Aug 31, 2011 5:11 AM in response to joostvandersluis
    Level 1 (35 points)
    Aug 31, 2011 5:11 AM in response to joostvandersluis

    Did you also try the tweak mentioned earlier to disable HDMI 1.3 via SwitchResX? It seems there are also some that have success going that route.

     

    Let me see if I can find the original post and poster.

     

    Edit: Here it is. Posted by Samoel

     

    Now that you've got desktop access the affected computer and it's connected to the tv:

    • Download and install SwitchResX (10 day demo, google it)
    • Start SwitchResX, select your TV on the left side:
    •       Click - Disable HDMI 1.3a (enables more resolutions on HDTV)
    •       Click - Default Resolution
      •   set it to 1920 x 1080 @ 50 or 60 hz (or the setting your television can handle or you prefer)
    • Close SwitchResX
    • reboot and the computer should start displaying on your TV, if not try adjusting the resolution.

     

    There is an non demo free alternative to SwitchResX called DisplayConfigX which i'm in NO WAY SURE works with Lion or even can fix the problem, but it's worth a shot if you want to try something else.

  • by Zbegon,

    Zbegon Zbegon Aug 31, 2011 5:12 AM in response to joostvandersluis
    Level 1 (0 points)
    Aug 31, 2011 5:12 AM in response to joostvandersluis

    Got my Phillips to work by running software update. 10.7 had issues with mine but 10.7.1 works flawlessly.

  • by joostvandersluis,

    joostvandersluis joostvandersluis Aug 31, 2011 5:18 AM in response to Ratboy
    Level 1 (0 points)
    Aug 31, 2011 5:18 AM in response to Ratboy

    @djrumpy - thanks.   I'm far from mac pro, so now I just have to find out on how to do VNC

     

    @zbegon - that's good news. Did you have the same problem  ( white start up screen, all black after that ) ?

  • by Zbegon,

    Zbegon Zbegon Aug 31, 2011 5:24 AM in response to joostvandersluis
    Level 1 (0 points)
    Aug 31, 2011 5:24 AM in response to joostvandersluis

    Yes I updated to Lion a week early as I am a Developer, it wouldn't display on my Phillips but it would on my Sony 50" in my living room. I talked to apple engineers every other day submitting reports and other info. The update helped me but not everyone, 10.7.2 will be out anytime now and also includes more HDMI support for more models, I'm told.

  • by joostvandersluis,

    joostvandersluis joostvandersluis Aug 31, 2011 5:30 AM in response to Zbegon
    Level 1 (0 points)
    Aug 31, 2011 5:30 AM in response to Zbegon

    Sounds good.

     

    Waited with the 10.7.1 upgrade because I read it didn't fix this problem.  Gonna try  it out.

    Will be back with a report on that

     

    thanks

  • by Venturas,

    Venturas Venturas Aug 31, 2011 5:49 AM in response to joostvandersluis
    Level 1 (0 points)
    Aug 31, 2011 5:49 AM in response to joostvandersluis

    page 9, my solution works for philips. There is really no need for 3rd party software. Enjoy

  • by Zbegon,

    Zbegon Zbegon Aug 31, 2011 5:54 AM in response to Venturas
    Level 1 (0 points)
    Aug 31, 2011 5:54 AM in response to Venturas

    This solution does work, however if you payed for a product it should work without a workaround. I would wait for update 10.7.2 if you can wait. What it fixes now may break something in a newer version.

  • by joostvandersluis,

    joostvandersluis joostvandersluis Aug 31, 2011 5:56 AM in response to Zbegon
    Level 1 (0 points)
    Aug 31, 2011 5:56 AM in response to Zbegon

    @venturas  thanks

     

    does the mac mini has to be connected to the (not working) philips tv  or can I plug it into a working monitor when entering the commands

  • by DJRumpy,

    DJRumpy DJRumpy Aug 31, 2011 6:37 AM in response to joostvandersluis
    Level 1 (35 points)
    Aug 31, 2011 6:37 AM in response to joostvandersluis

    joost, to VNC into your Mac, I put some instructions a bit further up..sec and I'll repost:

     

    Just an FYI, the console commands are unecessary. You can enable screen sharing in Preferences. This is for those that don't like using terminal.

    You'll need to perform this on the target Mac you want to remote into:

    Open Preferences

    --> Internet and Wireless

        --> Sharing

    Click on Screen Sharing. Add the user accounts you want to allow remote screen sharing for.

     

     

    The rest you can do from any other Mac by remoting into your problem Mac via VNC:

    After that, as already mentioned, you can use Finder to connect to the PC, or just use it's VNC address from the finder GO menu:  GO --> Connect to Server -->  VNC://computername.local

     

    Note: If you don't want to be bothered with being prompted to choose a login under lion or to bump another account off, you can just specify your credentials in the VNC command like so:

     

    vnc://username:password@computername.local/

     

    So in the above example if my username was widget and my password was dohickey and my Mac was called home1 then it would look like this:

     

    vnc://widget:dohickey@home1.local/

  • by Venturas,

    Venturas Venturas Aug 31, 2011 6:41 AM in response to joostvandersluis
    Level 1 (0 points)
    Aug 31, 2011 6:41 AM in response to joostvandersluis

    You can use any monitor you like

  • by joostvandersluis,

    joostvandersluis joostvandersluis Aug 31, 2011 12:53 PM in response to Ratboy
    Level 1 (0 points)
    Aug 31, 2011 12:53 PM in response to Ratboy

    I upgraded to 10.7.1, which didn't solve the problem

     

    Type in the stuff in terminal ( cd system/library/   Etc etc ) and shut down the mac mini after that. Plugged it into the tv and... It works !

     

    Great guys, thanks for this. Appreciate the input here.

  • by marcello caaz,

    marcello caaz marcello caaz Sep 2, 2011 11:34 AM in response to joostvandersluis
    Level 1 (0 points)
    Sep 2, 2011 11:34 AM in response to joostvandersluis

    Hello All,

    I HAD the same problem but with the help of apple I solved the problem.

    I have a Philips 37pf9730-11

     

    Hope this solution will work to you all also:

     

    Important connect the mini to a working screen and do this dutch and english

     

    2- open de Terminal ( die vind u in de map programma's / Hulp programma's , of via de Spotlight)

    Open Terminal

     

    4- Tik in cd(spatie)/ (enter)

    Add:  cd(space) /(enter)

     

    3- Tik in de Volgende regel/Add:  cd /System/Library/Displays/Overrides/DisplayVendorID-410c/ (enter)

     

     

    4- Tik in de Volgende Regel/ add:  sudo mv DisplayProductID-0  DisplayProductID-0.old (enter)

     

    5- Vul uw wachtwoord in

    add your password but you will not see it ( u zult niet zien dat u iets intypt)

     

     

    6- Herstart daarna uw mac.

    restart mac mini

     

    7- Sluit de Mac af en sluit hem aan op de TV.

    Connect you mini to the tv and he will work hopefully

     

    Best regards and good luck

    Marcel

  • by Djmen,

    Djmen Djmen Sep 4, 2011 2:25 PM in response to Ratboy
    Level 1 (0 points)
    Sep 4, 2011 2:25 PM in response to Ratboy

    I had the same issue with my new mini mac and monitor NEC MultiSync P221w (hdmi->DVI adapter)

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