• Create a new subroutine. • Create a new function. • Define a variable.
In addition to delivering power and data connections to a MacBook, a USB-C connection can support a single display with maximum resolution of 4K at 30Hz (4K at 60Hz is possible but data speed drop from USB 3.0 to USB 2.0 speeds). USB-C Displays. As the USB-C connection continues to proliferate, more display options are cropping up that support this standard. The promise of a display that can handle all of your peripheral connections and power your MacBook through a single cable is enticing, but there are some tradeoffs that need to be considered.
By • 6:00 am, June 29, 2012 • If you use your MacBook with external displays, you might want to use it with the display off but the lid open at some point. If so, today’s tip should help you accomplish this goal, with not one, not two, but three different ways to do so. You can do this with the laptop lid shut, but with ever more powerful MacBooks out there, avoiding the heat that might build up in there is probably worth leaving the screen up, right? Leaving the screen up with the display off will let heat leave the Mac through the keyboard, and will allow the graphics processor give all of it’s power to the external screen, which is helpful if you’re working on graphics-intensive applications. This only works with when the MacBook is connected to an external display, so start there. Tip 1: Use The Terminal Don’t be afraid – launch Terminal app and type or paste the following code in: sudo nvram boot-args='iog=0x0' Then type in your main password when prompted. You’ll need to restart your Macbook, but be sure it’s connected to that external display – this will shut off your internal screen until you use the following command to change it back: sudo nvram -d boot-args Then reboot again.
If you accidentally disconnect the MacBook from the display, you’ll need to zap the pram, which entails holding Command-Option-P-R when restarting. Tip 2: Use the System Preferences Be sure to have your MacBook plugged in for this one. Then, open System Preferences and go to Mission Control. Click on Hot Corners and click on one of the corners – it’s up to you which one.
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Once selected, pull down the menu next to it and choose Put Display To Sleep. Connect the external display to your MacBook and then move your mouse to the corner you selected above. It should turn off only the internal display. Close your MacBook lid and wait a couple of seconds. Lift the lid and it should stay off. You can use the trackpad and keyboard in this way as well.
Tip 3: Use a Magnet This last is more of a “cool, check it out” tip. How to get a splash screen for osx and windows using bootcamp. Don’t try this at home if you’re concerned about bringing a magnet anywhere near your computer, and don’t blame us if you do and something funky happens. That said, be sure to attach an external keyboard and mouse first. Then, find a small magnet from your fridge. Don’t use anything stronger than that, ok? Connect the external display to your MacBook, slide the magnet around the outside lip of the MacBook screen until it goes right to sleep.
Once it goes to sleep, press any key on the external keyboard you connected up, and the MacBook should display only on the external monitor. This is of course more dangerous than just closing and re-opening your MacBook when connected to an external display, but that trick no longer works that well in OS X Mountain Lion.
Have fun dissipating heat and using your graphics chip to its highest ability, and let us know in the comments what your favorite tip is. Got an OS X tip? Need help troubleshooting OS X? Or leave a comment below. Source: Image.
I sometimes forget how many working Apple displays of all vintages remain out in the world. What reminds me is the regular email from Macworld readers asking about connecting them up to the Thunderbolt 3 MacBook Pro laptops that Apple started shipping in late 2016. Today’s question is about power, but because we receive so many queries, I want to review the overall legacy display issues for everyone, before digging into that specific answer. The current series of MacBook Pros offer super-high-speed Thunderbolt 3 connections over the USB-C plug standard, and can work with a variety of monitors that support DisplayPort, a now long-running video display protocol, via direct USB-C connections and through adapters. For clarity, Apple’s modern displays fall into three basic eras: • Cinema Display (starting in 1999), which used DVI connectors • LED Cinema Display (starting in 2008), which relied on Mini DisplayPort • Thunderbolt Display (starting in 2011), which uses Thunderbolt 2 over a Mini DisplayPort-style connector We continue to receive queries about the Cinema Display models and DVI (including dual-link DVI, which used two connectors), and to the best of my knowledge and that of our readers, there’s no reliable way to handle all the conversion necessary to drive those displays.
(Some of these displays are just over a decade old and in great working order, so it’s a shame they can’t be easily used. You might consider finding a school that has an older vintage of Macs that could make use of one.) You can consult about connecting LED Cinema Displays. (Some of the docks and adapters have changed or been discontinued since then, but many remain available.) And you just need to plug in a Thunderbolt Display. Now, both the LED Cinema Display and Thunderbolt Display series included MagSafe connectors, so you could plug a Mac laptop into the display and charge it at the same time. Macworld reader Scott wrote in asking if there were a way to use his LED Cinema Display with his current Thunderbolt 3 MacBook Pro.