Issue closing lid with video running on external display

Discussion in 'MacBook Air' started by asdf12125, Aug 4, 2011.

  1. asdf12125 macrumors newbie

    Aug 4, 2011
    Hey guys,

    I just got the 2011 Air, and this is my first time using Mac OS, so maybe one of you could help me out. I just got a Mini-displayport to HDMI adapter in the mail today:
    Amazon link to adapter

    When I went to test it out (full screened VLC on the external display), everything seemed to work fine until I closed the lid. First, the video froze and the sound cut out, but after a few seconds, the video started playing again with a large rectangle artifact on the screen (video below). Then, when I open the lid, the video "returns" to the laptop display (but the screen stays black) and I'm able to remove full screen. When full screen is removed, the video continues to play on the external display again, but with no sound.

    At first I figured the laptop might be going to sleep when I close the lid, but that seems unlikely since the video keeps playing after a few seconds. Either way, I tried (and failed) to find an option in the system preferences to not sleep on a lid close, which is an option I used for Windows 7.

    I apologize in advance for the poor video quality but I figured it was enough to illustrate the issue:
    Youtube video link

    Has anyone seen this before? Is there an option that I missed to disable sleep on lid close?

  2. CanadianEh macrumors member

    Jan 17, 2009

    I have a similar problem. Currently using the Moshi. When I close the clamshell, it goes to sleep. I use my bluetooth keyboard and the screen shows up for about 2 seconds then goes blank. I have a callback from Apple tomorrow morning. I did setup my bluetooth keyboard to allow the computer to wake up.
  3. blkonblk17 macrumors 6502

    May 19, 2009
    Are you using a wireless mouse and keyboard? If so, go to system preferences/bluetooth/advanced and make sure the tab is checked that says "Allow bluetooth devices to wake this computer". For the audio go to system preferences/sound/output tab and select your external display. For the screen closing issue make sure the computer is plugged into the power adapter. If not, it will "not" work.

    Just in case you need further assistance read the link below:
  4. CanadianEh macrumors member

    Jan 17, 2009
    I just tried using a wired mouse. Same problem. Screen shows up for about 2 seconds. Yes, I did check the box regarding the wake up. Is this hardware or software. I didn't mention earlier but my Air is the one that came out a few weeks ago. The only instruction I did not follow is the power adaptor. I previously owned the MBP and had no issues.
  5. blkonblk17 macrumors 6502

    May 19, 2009
    Make sure you use a power adapter. If not, it will "not" work. Believe me, I know lol. I actually have my 11" MBA on my 46" Samsung both watching a movie and writing here on the site. Awesome!
  6. asdf12125 thread starter macrumors newbie

    Aug 4, 2011

    Thanks for the link. I thought the issue might have been that I didn't have an external mouse plugged in (The power adapter was already plugged in). I tried plugging it in, but got the same issue when I closed the lid. But this time, since I could control the external display with my mouse, I exited and re-entered full screen and the video artifact problem was fixed. The problem was the audio was still gone. I had already set my audio output to the TV, and it was working while the lid was open.

    If it comes down to it, I can just leave the laptop open while videos are running; it's not a huge deal, but it would be nice to be able to close it during movies.
  7. CanadianEh macrumors member

    Jan 17, 2009
    Works perfect now. Couldn't be more happier with the Air. Such a sweet machine. Thank you very much for your help. Guess I will cancel my appointment tomorrow. :D
  8. asdf12125 thread starter macrumors newbie

    Aug 4, 2011
    Update: I got the audio to work, it looks like the issue was switching to clamshell mode while the video was already playing on the external display. When I switched to clamshell before opening the video, everything worked.

    I still have an issue with the display where the top and bottom edges get cut off; I think it's most likely an issue with the aspect ratio on the display itself.

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