Currently Being ModeratedSep 17, 2012 8:24 AM (in response to hanskra)
In you sound settings under preferences, make sure you have your output set to your TV.
Currently Being ModeratedSep 21, 2012 10:08 AM (in response to smahesh123)
I'm having the same problem after the recent ML update, I hook up my MbpR to my samsung tv and the Macbook screen flashes blue as usual but nothing appears on the Tv, when I go into systems prefences/displays the computer shows no external monitor hooked up.
Very frustrating cause it was working perfectly before the update, does anyone have any suggestions?
Currently Being ModeratedSep 21, 2012 8:23 PM (in response to Wiz1331)
Have same issue after recent update on mac. Got video and audio but it keeps switching on and off while watching on external monitor. When im connecting via mac book pro, evruthing is working fine. So its definetly something with software.
Currently Being ModeratedSep 24, 2012 7:56 AM (in response to smahesh123)
I got it working dunno if this will work for everybody but it's no harm in trying, try rebooting the Rmbp with the hdmi cable attached when it reboots it should output the signal to the external display in my case without the display on the Rmbp being on.
Go to system preferenes/ displays and toggle between the mirrored and non mirrored setting to switch the mbp screen on . The display of the Mbp should switch on then and it should work the way it was originally.
Hope this works for you too.
Currently Being ModeratedSep 25, 2012 2:05 PM (in response to Wiz1331)
I just bought a new Rmbp. This morning I hooked up my Rmbp to my Samsung monitor through HDMI. It worked perfectly fine. Afterwords I downloaded the my updates through the appstore, now when I hook up my Rmbp it flickers a blue screen and then both my Retina screen and my monitor are black, I cant do anything but unplug the HDMI. What can I do about this?
Currently Being ModeratedSep 26, 2012 6:46 PM (in response to SnellingsY)
same exact problem as well, please let me know if you get a solution!!! PLEASE this is crazy for a 2 grand machine not to work properly!!!!
Currently Being ModeratedSep 27, 2012 6:06 AM (in response to smahesh123)
The strange part is at it worked perfecty fine, until I installed the updates for the OS in the appstore and then it didnt work anymore. My guess is that it is a software problem. They really should come up with a solution for this!
Currently Being ModeratedSep 27, 2012 9:57 AM (in response to SnellingsY)
I'm having the same issue. Prior to OSX 10.8.2 my late August 2012 MBPr that came with 10.8.1 it worked fine on my work Samsung 50 in monitor run 1920 x 1080. I recently updated to 10.2.2 and now all I get is a Black Screen with a huge Mouse Arrow, so I'm thinking that it hase to do with the scaling.
There was a new gfx driver added for the retina for the guys running World of Warcraft. Those that had played WoW were having heating and CPU issuses when playing in game. CPU usage hitting 120% and heating the GPU to over 190 F, almost cooking the card. Blizzard and Apple got together to fix the problem, but I think they just made it worst. CPU is down but the GPX card temp is still up there hanging around 150 F and the fans blowing like crazy.
I've tried everything that is in this thread and nothing seems to work. Apple you really need to look at this.
Currently Being ModeratedSep 27, 2012 11:34 AM (in response to Galor)
correction upgraded to 10.8.2 not 10.2.2, fast brain, slow fingers
Currently Being ModeratedSep 27, 2012 11:39 AM (in response to Galor)
I really hope Apple has taken a notice to this problem. This laptop cost 2000 euro, it should work properly!
Currently Being ModeratedSep 28, 2012 5:46 PM (in response to Wiz1331)
I have the same issue. It wasn't until i did the new ML update that i had the issue. Before i did the update it was working perfectly. I think a revised update will fix the bug and i hope it happens soon!
Currently Being ModeratedSep 29, 2012 3:17 PM (in response to smahesh123)
They really should fix this asap! It's driving me insane. It probably just needs a simple software update!
Currently Being ModeratedOct 3, 2012 1:03 AM (in response to smahesh123)
I am having the exact same problem. I just took mine in to have them take a look at it and when he used his HDMI and tv is worked though?? So I am confused as to what is not working now, since I am still have the same problem as all of you. They sent me on my way since their was nothing their showing it doesn't work.
Currently Being ModeratedOct 3, 2012 1:12 AM (in response to mroatman)
How do you turn on the Dynamic Switching? when the HDMI cable is plugged in it goes blank so how did you get this? i want to try it..
Currently Being ModeratedOct 3, 2012 8:22 AM (in response to smahesh123)
I'm having a similar problem, but I can't even see if the HDTV is connected because the screen on my MBP goes black as well. I had it connected well once, and if I recall correctly, I didn't have mountain lion installed yet. Maybe it has anything to do with that?