Mac mini second display not working

If possible, remove one of the adapters and avoid chaining them together. Does the display work with other connections?

Second Display won't Wake UpMac OS X

Try using another computer or another video source and see if the display works with that video connection. Is your video cable bad? Try using a known good video cable and see if the problem persists. Often times, the video cable connecting the external display to your Mac just needs to be replaced. Problems with display resolution will cause problems with your picture. With resolution issues, your picture may look blurry, or scaled incorrectly.

Typically when you plug an external display in to your Mac for mirroring, your Mac will automatically adjust its own display resolution to fit the external display. Not all resolutions translate well to others, and this will cause scaling issues that make some things look elongated or too tall.

Adjust your resolution manually: It is possible for you to manually adjust your display resolution, and it can be done from the System Preferences on your Mac. Choose the default resolution: Try setting your display to use the default resolution for the display from the same preferences pane discussed above. Change resolution settings in Safe Mode: Sometimes you may find yourself unable to change external display settings on a regular boot-up.

If this ever happens to you, Apple suggests booting into Safe Mode on your Mac to see if the settings can be reset to default. Check for software updates for your apps: Sometimes specific apps may look blurry. Check for new drivers for your display: Sometimes, an updated version of macOS may include drivers pre-installed, so always make sure macOS is up to date too.

Sometimes, different external displays will look better with different non-factory color profiles. Play around a bit with these settings until you see something you like. If none of the presets in the list look good to you, try clicking on the Calibrate button from the Color tab in the Display settings of your external display.

If the display image is blank or unusable

Find the contrast button: Lots of third-party external displays not made by Apple have custom contrast buttons on them. You can typically press them on the monitor itself to adjust the contrast and make colors easier to distinguish between. Find the color button: Like contrast buttons, some third-party external displays not made by Apple also have RGB buttons, which let you manually configure the Red, Green, and Blue levels for the display. If the display looks too orange for you, then give it some more green and blue.

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If it looks too blue for you, give it some more orange and green. Adjust your brightness: The brighter your display is, the richer the colors are going to be because more light means more visibility. Your eyes use light to distinguish color. February 19, , Home Help Search Login Register. Luminous Landscape Home. Mac OS X. Author Topic: Second Display won't Wake Up Hi everyone. I hope your weekend has gone well. My main machine is a Mac Pro Trashcan, 8 Core.

Mac Mini 2014 Dual Monitor Problems

Whenever the computer goes into sleep mode, for an extended period of time, the second monitor Apple Thunderbolt Display will not wake from sleep. It just stays black. The peripherals run fine external backup drives plugged into it. They are mounted on the desktop. The display is plugged directly into the Mac Pro. I am at a complete loss here. I've trouble shot everything I can think of.

No matter what, if the computer sleeps for 20 plus minutes, that second monitor will stay black until the computer is fully restarted. Then it turns on just fine.

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Does anyone have a thought here or experienced a similar issue? It started occurring prior to my NEC upgrade, with another monitor. I'm thinking it's a recent bug, but definitely underreported.

Get help with video issues on external displays connected to your Mac

Any help would be great! Thanks, as always, guys! JB Rasor. JB Rasor www. I have a similar problem.

I have two Eizo monitors. One wakes up immediatly and the second will after turning the screen off and hitting the return key a number of times.

Wondering if this is related to the graphics card problem referenced here: Quote from: Thanks guys! I think I may have isolated the issue, but it'll take a couple more days to make sure it is what I think it is. It appears to be related to peripherals plugged into the Thunderbolt display second monitor. Odd, because that fix didn't work a week ago. At any rate, I'll report back with my findings. Are you both running peripheral devices into your displays? Drives, speakers, etc.? Member Offline Posts: Extremely useful but poorly documented feature: Under System Preferences, choose Displays.