Mac mini display problems

My Mac mini (bought in early 2011) has recently started having sync problems with my viewsonic monitor. It used to work fine. Have upgraded to mountain lion and mavericks hoping to solve the problem but it persists. I get snow and then blank screen. This happens randomly I never know when the screen is going to go white on me.

What connection configuration are you using...?
HDMI to HDMI
HDMI to DVI
Mini DisplayPort to HDMI
Mini DisplayPort to DVI
Mini DisplayPort to VGA
Have to tried resetting the NVRAM...? see > About NVRAM and PRAM
1. Shut down the computer.
2. Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
3. Turn on the computer.
4. Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
5. Hold the keys down until the computer restarts and you hear the startup sound for the second time.
6. Release the keys.

Similar Messages

Please help me! - really weird mac mini display problem.

Ok this is just too WEIRD.
i have a brand new 1.42ghz mini (512mb ram and wireless) with a sony SDM-HS75 LCD. This is an analogue LCD and im using the supplied apple VGA adaptor.
before i continue i will say that i have hooked up the lcd to numerous other macs and the screen and cable are fine. i have no dimmer switches on my lighting, i have no objects placed on the mini (like a cell phone etc)
when i first set up my mini the video output was murky and grey and noisy across the screen. Then i discovered the setup utility on the CD that came with the sony screen. i ran it (it displays a grid calibration thing) and discovered the "phase" adjustment on the sony's on screen menu. i managed to adjust out the fuziness and noise and the image quality was then perfect.
heres where it gets weird. the point at which the monitor is in phase with the video signal shifts around all the time! i mean - i get the phase set at say 43 out of 100 on the adjustment scale and the next time i restart i need to shift it to 73 to get rid of the blur and the noise on the display.
Also, the using airport affects the display and knocks it out of phase - i dont use wireless but if i activate it i can see a difference instantly.
this is really strange and i cant see a solution.

Is this a new-ish LCD? Many newer LCDs will have an auto adjust option or button to set the phase and fine tuning for you so you don't have to do it yourself.

My mac Mini has problem rendering images and video

THE PROBLEM:
My mac mini has problem rendering JPEG image. There are strips on the images. Other images such as GIF, PNG, TIFF, and BMP are displayed nicely.
The images shown in the links below illustrate the problem:
http://www.flickr.com/photos/terencewong/71481156/
http://www.flickr.com/photos/terencewong/73360989/
(Please note that this image is grabbed from my faulty Mac Mini and saved into TIFF. For uploading purpose, I converted it into JPEG on ANOTHER computer.)
For movies, AVI can be playback without problem. But when it is converted to MPEG, it looks like an untunned TV channel.
FIXES TRIED:
I did erase and install 3 to 4 times using both the install disc and my Tiger Family Pack. All ended up with strips on the JPEG images and the generated MPEG movies.
I've also tried to flash the firmware to 113-xxxxx-124 using ATI's october 2005 universal ROM update, however, the ROM Revision shown in System Profiler is still 113-xxxxx-116 no matter how many time I reboot the system.
INVESTIGATION:
Yesterday, I did some research and got to know that JPEG and MPEG are using DCT (Discrete Cosine Transform) for decompression. And the ATI Radeon 9200 chip provide such a transform on hardware basis, which free the CPU from doing something else. Feel free to point out my inaccuracy.
HARDWARE SPECIFICATION:
I bought the Mac Mini in the last Februray.
The system Boot ROM version is: 4.8.9f1
Display card is ATI Radeon 9200
Chipset Model: ATY,RV280
Revision ID: 0x0001
ROM Revision: 113-xxxxx-116
A POSSIBLE CONCLUSION:
I suspect that it is this part of the chip (the DCT) that is faulty.
Anyone know how to fix this problem?
Many thanks!

Assuming that your display is tightly connected, thus the problem is not caused by something as simple as that, the fact that a full erase and install has not removed the problem would, I think, point to this being a hardware issue, and given that everyone's mini (with the possible exception of some of the latest ones) has the same video chipset as yours, and do not suffer the problem that you appear to, it seems very likely that your mini has a fault which is in need of repair.
If you have an Apple Store nearby, I would take it there to have it checked out - at the very least they should be able to replicate your problem using an in-store display, and if not, thusly suggest it's something external to the mini and concerning your display or something very unusual in the immediate environment of the mini. If you don't have an Apple Store in reach, I'd take the system to an Apple authorized service provider since at the present time it is under warranty.

My mac mini displays a green screen with 'mac os version not yet responded' and 'you need to restart your computer' as a warning message. Inspite of all my tries it doesnt run from the install dvd either.

My mac mini displays a green screen with 'mac os version not yet responded' and 'you need to restart your computer' as a warning message. Inspite of all my tries it doesnt run from the install dvd either.
Please help.

Sounds like you may have a hardware problem since it won't read from DVD, and it is only a year and a half old. Hopefully all it is, is bad RAM*:
http://www.macmaps.com/badram.html

Can i connect my iMac to a mac mini (wirelessly) and control the mac mini display on my TV?

Can i connect my iMac to a mac mini (wirelessly) and control the mac mini display on my TV?

Look up "screen sharing" in help
You can control your mini (which I am assuming you are hooking to your TV) complete from your iMac.
After you set up screen sharing, you can go to the finder, under the "go" menu choose "Connect to server" and then browse. Choose your mac mini's name, and look for the "Screen Sharing" button.
Choose Apple menu > System Preferences, and then click Sharing.
Select the Screen Sharing checkbox.
To specify who can share your screen, select one of the following:
All users:
Select this if you want to allow any user with a user account on your computer to share your screen.
Only these users:
Select this if you want to restrict screen sharing to specific users.Click Add at the bottom of the Users list and select a user from Users & Groups (accounts you have set up in Users & Groups preferences), Network Users (users on your network), or your Address Book. Or click New Person and enter a name and password to create a sharing account. Then select that user from the list, and then click Select.
Click Computer Settings and set the following options:
Anyone may request permission to control screen:
Select this to allow anyone on your network to request to share your screen.
VNC viewers may control screen with password:
Select this and enter a password that VNC viewer applications can enter in order to control your screen.It’s recommended that you not set a password if you only share this computer’s screen using the built-in screen sharing viewer in Mac OS X.

HT1338 Mac mini display connection will not come back after sleep, I have to shut down and restart the monitor.

Mac mini display connection will not come back after sleep, I have to shut down and restart the monitor.

Finder icon on dock, macintosh hd, library, launch agent - delete all files & restart sleep to test
also
Finder icon on dock, macintosh hd,
Library/Preferences/SystemConfiguration/com.apple.PowerManagement.plist
delete file & restart sleep to test.

HT1338 Mac mini display color setting problem

On my Mac mini the color displat settings are gone pinkish. I checked the HDMI cable to the LCD TV and it is okay. Help me to resolve the problem

To check if this is something in your current user account, Log Out from the Apple menu, to get to the login screen. Does the screen look "pinkish" at the login screen? If it does, there is a problem related to the overall system, or hardware.
If things look normal at the login screen, then the problem is probably related to a setting in your user account. Log in to your normal user account. One place to check is System Preferences Universal Access pane. On the Seeing tab, look at the Enhance contrast setting. Make sure it is set to Normal.

Mac mini display is flicking via HDMI to DVI adapter and DVI cable

i have received mac mini server (mid 2011) recently. mac mini is connecting the display via HDMI port using DVI cable with a HDMI to DVI adapter.
the display shows constant flicking. white dots/lines show randomly. it is like those signal noise when watching analog TV.
the same display works fine and well with macbook pro (early 2008) via DVI port.
please help. please advise.

So you know the display is working.
It seems to me you have a few possible problems.
1 HDMI-DVI cable is bad
2 DVI-cable is bad
3 Connections between cables or computer or monitor are bad.
4 HDMI port on the computer is bad.
I assume you've tried #3, and re-connected cables and wiggled inputs. So then try replacing 1 and then replacing 2 which are cheaper fixes than replacing/fixing 4.........
FYI, I'm connect my mac mini using the same setup you describe, with no issues....also inspect the cable ends carefully to look for any problems.
jb

Late 2012 Mac Mini display goes to black for a few seconds at random intervals

I have a late 2012 Mac Mini, Ivy Bridge, connected to a 24" Samsung LCD dsplay,using the HDMI to DVI video cable that came with the Mac Mini. At random times when I am doing something or browsing the web, the screen will go totally black and then revert to the proper display. This Mac Mini is connected to a 2 port KVM, however I never see this behavior when the KVM is switched over to the PC. Has anyone else seen this behavior?

Welcome to the family. Search this forum for the main thread for this problem titled: "mac mini 2012 video blinking out".

2010 Mac Mini display and network issues after Mountain Lion installation

I just installed Mountain Lion on my 2010 Mac Mini, but now the display won't work and it isn't showing up on my network. I have it hooked up to my TV (I don't have another screen for it) via HDMI. Also, I've mainly used this computer by using the share screen function with my laptop, so I don't have a keyboard or mouse for it either. The Mini is no longer showing up on my laptop's network list... Any suggestions?

I would see if you borrow a USB keyboard and mouse
from some one, because otherwise trouble shooting the
problem will be next to impossible as sometimes the fixes
and diagnostics require the keyboard (PRAM reset, Hardware
Test, etc.).

Mac Mini display settings change after shutdown

After a shutdown, my Mac Mini's display settings will change on startup. This happens about 80% to 90% of the time.
Sometimes it may be due to playing a video game (Diablo 3) where the resolution in the game is slightly lower. The Mac Mini is set to 1080p, but in-game it is 1600x900. After playing a game, maybe half the time, when I go back to my desktop, the display looks different. However, even other times even when I wasn't playing a game, after a shutdown, the display settings will change.
The strange thing is that it isn't a change in resolution. The resolution stays the same. It is always 1080p after every shutdown. But something in the display changes. Curved shaped look more pixelized, like some kind of smoothing or antialiasing has been turned off. And bright things are too bright, dark things too dark, so images lose some detail. It is also a bit painful on the eyes. Everything looks less vivid and very dull.
Someone in an older post suggested changing refresh rates. Unfortunately, my Mac Mini doesn't show that option. It was also suggested to connect to a different monitor to possibly make the options appear. But I don't have another monitor.
My current solution is to reset NVRAM (command+option+P+R) on startup. It seems to reset the display settings and fixes the display problem 100% of the time. But the thing is, I have to now keep doing this almost everytime I start up my Mac, which is annoying.
Is there a way to ensure that the Mac Mini keeps my display settings and prevent it from losing them on startup? Or perhaps, a way to reset display settings from within the OS without having to shutdown again and reset NVRAM?

hey p26grinz,
without the external monitor and after setting the display, will the setting remain ?
have you tried uninstalling the graphic driver from your unit and then testing it with generic driver ?
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Connected to new Mac mini display doesn't work

Connected a new Mac mini to a 20in apple Cinema Display and display does not work

How are the two TVs connected to the Minis?
Tell us more about the "problem" TV.
Are the Minis in the same location with both TVs? I ask because maybe interference is causing the problem. If the Minis are in same location it cold be cause by interference generated by the TV

Late 2012 Mac Mini Display Capabilities

Can the new 2012 Mac Mini drive both an Apple Thunderbolt Display and a LED Cinema Display via daisy chaining?

Welcome to the family. Search this forum for the main thread for this problem titled: "mac mini 2012 video blinking out".

Mac mini Overscan problem

Hello, i just purchased a Mac mini and have connected it with DVI to HDMI onto my Panasonic plasma TV. The problem with this was if i turn overscan on the display is too big and is extended over the sides and some area isn't visble to me. If i turn overscan off there are black areas which is not covered around the sides of the screen. I have never had this with my PC connecting to this TV with HDMI DVI. But for some reason this problem is happneing to me right now...is there a Mac special software that can adjust the screen size so i can stretch the display around to manipulate it to a full screen size without anything being cut out or under cut in my display?

When you connected the PC and had no trouble with overscan, is there a way to capture the details of the timing involved? Because if you apply the same settings from the mini, there is no reason the TV shouldn't react to timing in the same way, meaning no overscan.

Mac Mini Sleep problem - help!

I have a new Mac Mini 1.83 and a new Envision 22" LCD monitor and when I put the Mac Mini to sleep and click on the keyboard, the MacMini comes out of sleep but the display screen stays black. If I manually set the computer to sleep a second time and take it out of sleep a second time by clicking on the keyboard, then the display works properly. But I have to put it to sleep and make it come out of sleep TWICE before the Envision display works properly. Any ideas about this problem?

I have that problem since Quicktime 7.1.6 update (or the Airport Update, can't say).
When rebooting the display stays dark, but everything comes up fine. When I put in the Installation CD, the display turns on.
(DVI-FullHD, as before).
But after the "blank" screensaver gets activated, the display doesn't turn on again, not even using the CD.
(Although everything else still runs fine.)
HELP !
Mac Mini Intel/1.66 Mac OS X (10.4.9)

Mac mini display problems

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