Apple is dropping the ball on this with no published fix or update. The problem still exists. I believe this started a few months ago on Sierra. I am using HDMI to plug in the HDMI to VGA converter (which is plugged in to my monitor). This happens every few hours. When I use the computer, the display freezes and flashes to black before coming back on (very similar to what happens when you plug in an external display or TV). I get a perfect image on external monitor (you check this). My company purchased a Dell Ultrasharp U2415 for me. If I turn the monitor on after OS X has started up, it will flash on and off at few second intervals, sometimes irregularly. Every once in a while when I start up the Macbook pro the monitor will first turn on, then off and repeat indefinitely until I unplug the DVI connection. I unpacked it yesterday, plugged it in, used it for about 2 hours and then the video started blinking. Reattach the cable. Removed the back panel and inspected video cable and socket, pushed on the logic board at many places with a spudger but issue stays on. I use my macbook at my business and can not afford any down time....disappointed for sure. This is happening to me too on my Late 2013 15" Retina MacBook Pro with discrete graphics. I am now on High Sierra beta 3. I have the latest MacBook Pro and this occurred a few weeks ago. To set a different display as the primary display, drag the menu bar to the other display. Click “Restart … ” and then immediately close your Mac’s lid. I have a strange problem: when I connect external display to my macbook pro through official usb-c to usb/usb-c/hdmi connector some times it starts blinking (internal display) and have no picture on external one. MacBook Pro 17" Model A1297 / 2.66, 2.8, 2.93, or 3.06 GHz Core 2 Duo processor. I have a Late 2012 Macbook Pro Retina that just started having a display problem. Yes! The display flashes black for about a quarter of a second or less. If I place a finger on the power touch switch on the side the monitor, the display will usually stay on as long as I hold my … Arrange your displays to match the setup on your desk. 2. A red border appears around the display as it's moved. I only have a G-drive external drive and my apple monitor attached to it. I have my mid-09 13" MBP hooked up to a Samsung 2033SW. I did everything that the apple help desk suggested (wiping the HD, reinstalling OS, not restoring the applications, disconnecting peripherals, and restarting). Clip the silver thing back. My MacBook Pro 2014 keeps flickering when I plug in a HDMI to VGA converter to it. To change the position of a display, drag it to the desired position. The external monitor does not have any effect. Select the “Apple” log in your Mac’s menu bar. The screen is just black and then the Mac starts flashing. Hello. Macbook pro retina, did the high sierra update 2 weeks ago, now have screen flicker on connected monitor making it unusable. After some times (may … The primary display is where your desktop icons and app windows first appear. Hi, I have a MacBook Pro Retina (late 2013). Switch on your external monitor. Switch off your monitor. I think it's the whole screen that goes black, not just the lower half. Finally, if you’re using a MacBook, you can try disconnecting while also closing your Mac: Connect your Mac to the external monitor. when this was connected and turn the Macbook Pro on, the usual was happening, however out of curiosity i connected an external monitor and was greeted with a blank screen with blinking underscore (assuming because incompatible software) so i then took the ssd from another macbook pro i have to see if it would boot/ run normally to external screen.
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