The more the Mini Displayport is used, the greater the chance that it somehow works loose and suffers a failure. The connection between the adaptor and the laptop via the Mini DisplayPort is the culprit. There is no magic adaptor brand any better than any other brand. The conclusion is that the adaptors don't break. the Dell brand was successful 90% of the time. the Rocketfish brand, 80% of the attempts the Apple brand, the one which I had thought was broken, connected 90% of the time I did this ten times for each of my three brands of adaptor, unplugging the adaptor, then plugging it back in, to calculate the success rate of each adaptor.I plugged the adaptor into the laptop, firmly, wiggled it around a bit to secure the connection, and waited to see if the laptop screen was displayed on the projector.This also works with the "Extended" mode, and the warning about resolution isn't displayed. The display on the laptop then shrinks horizontally, and says that this is isn't the optimum display resolution.I used the F1 key on the laptop to toggle through the display choices to the "Duplicate" mode.I connected the VGA cable to the projector, and the adaptor to the cable.Most likely, the more it is used, the "looser" it becomes, making the connection with the adapters more tenuous. I reasoned it much more likely that the problem was with the Mini DisplayPort module, itself. What, I wondered, were the chances that three different manufacturer's products were defective? Not very high. cycling through the displays with the F1 keyĪfter reading online posts, I believed that my adaptor was broken, so I purchased a Rocketfish brand.I tried all the usual techniques on the laptop:
![rocketfish mac vga adapter rocketfish mac vga adapter](https://www.ifixmaccomputers.com/image/cache/catalog/a31019-1200x1200.jpg)
![rocketfish mac vga adapter rocketfish mac vga adapter](https://images-na.ssl-images-amazon.com/images/I/51ZUYvpjeBL._AC_SL1500_.jpg)
Then, the projector failed to detect a signal from the laptop. I had no problems for a year, maybe twenty PowerPoint presentations. I paired it with a Dell 1610HD projector, using its stock 6 foot VGA to VGA cable, and an Apple Mini DisplayPort to VGA adaptor from Best Buy. NVIDIA(R) GeForce(R) GTX 650 Ti 1.0GB GDDR5 card.I purchased a Dell XPS 8700 one year ago: Here's the real solution to my similar problem: Many people seem to have an issue with linking laptops with Mini DisplayPort output to projectors with VGA input. Tried with a hama Mini Display Port to VGA adapter and same issues Second screen is a Samsung SyncMaster 732N
![rocketfish mac vga adapter rocketfish mac vga adapter](https://i.ebayimg.com/images/g/S4AAAOSwnaVeq4zQ/s-l640.jpg)
If you have next steps in troubleshooting, I would love to hear those too.Īdapter is an Apple Mini DisplayPort to VGA adapter
Rocketfish mac vga adapter how to#
The question I have is how to get this working? The only key difference I can see between the screen cable & the projectors cable is length (projector cable is much longer) but still within the 15m. This leads me to think an issue exists between the combination of the adapter & cable.