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 ?
WW Social Media
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Display settings change after reboot

Thinkpad T400: 7417CTO
Windows XP Pro w/SP3
No docking station
I configure the extended desktop for external monitor and thinkpad LCD (both 1280 x768).
After I reboot for the first few seconds I see the display as pre-boot, then the displays are reconfigured for
single image at 800x600.
What is causing the display settings to change?
How do I prevent the display settings from changing?
Thank you,
Morris

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 ?
WW Social Media
Important Note: If you need help, post your question in the forum, and include your system type, model number and OS. Do not post your serial number.
Did someone help you today? Press the star on the left to thank them with a Kudo!
If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"!
Follow @LenovoForums on Twitter!
Have you checked out the Community Knowledgebase yet?!
How to send a private message? --> Check out this article.

Mac Mini display doesnt work after hard shut off

I have a mini that i bought in 2008/9 and it is connected to my tv with a HDMI cable. I had to hard shut it off, and upon rebooting, nothing shows up on my screen. The sound it makes when it starts up doesnt come on either. Is there a way to fix this without taking it in?

Do you hear 2 chimes just on normal startup?
The following table lists the new tones and their meaning:
Tone(s)          Description
1 tone, a 5-second pause, repeat          No RAM installed
3 successive tones, a 5-second pause, 3 successive tones          RAM does not pass data integrity check
1 long tone when holding down the power button          Firmware upgrade in process. See About firmware updates for Intel-based Macs for more details.
3 long tones, 3 short tones, 3 long tones          Firmware restoration from CD in process. See About the Firmware Restoration CD (Intel-based Macs) for more details.
http://support.apple.com/kb/HT2538
Can you count the beeps or flashes?
1 beep = no RAM installed
2 beeps = incompatible RAM types
3 beeps = no good banks
4 beeps = no good boot images in the boot ROM (and/or bad sys config block)
5 beeps = processor is not usable

Mac mini display color changed. How do I get it back to normal?

I picked up my keyboard to remove dust and dirt, and I must have pressed some button or two, because now the colors in my display are horribly wrong.
I opened Library/ColorSync
and then Profile First Aid.
I verified and repaired and got this message:
"Library/ColorSync/Profiles/EW-sRGB
Tag 'desc': Tag size not correct. Could not be fixed."
What do I need to do to get my colors back to normal?!?!?

Create a new user, log out your current user and log in as the new. It colors are displayed correctly, then I guess you could go into the other user's library and delete the offending file.
Moral of the story: To clean your keyboard, do disconect it first... ;-)

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.

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.

Mac Mini Won't Sleep after installing 10.4.6

My Mac Mini wakes itself up after just 1 minute of putting it to sleep mode. I've tried restarting my mini, and tried quitting all apps and disabling airport and bluetooth- but it still won't sleep! Anyone else experiencing this problem, I didn't have this problem with 10.4.5 and I've installed no other software since then...

This is for a Mac that won't sleep.
First, read things in Apple doc.#25801 on sleep settings.
USB devices and hubs often cause Macs to not sleep or wake quickly from sleep (notably HP printers and scanners, HP all in ones, and Cannon scanners). Disconnect all USB except for keyboard and mouse and try. If it sleeps, add one back at a time testing after each one to find the culprit.
If you've set your Mac to recieve faxes, it may not be able to sleep. It might also have a damaged preferences file.
If you use your Mac for faxing, open System Preferences. click Print & Fax, click the Faxing tab, and uncheck the Recieve Faxes On This Computer box.
If that does'nt work or you've never faxed on your Mac, go to Finder/Hard Drive /Library/Preferences/SystemConfiguration and delete the com.apple.PowerManagement.plist and com..apple.AutoWake.plist files (if your Mac asks, type your admin. password).
If the latter file isn't present in the folder, go to user name(probably your name)/Library/Preferences, delete the com.apple.systemuiserver.plist file, and reboot your Mac.
Hope this helps!
P.S. One member here reported this (Michael Gleason);
"I have had this problem with my IMac G5. It is surprisingly irritating. LaCie's Silverkeeper backup software was the cause. By default it gave itself permission to wake up the computer to check if a backup was needed. Do you have this or a similar program installed which has scheduled activities including wake-up permissions as an option?"
Dave Hamilton provided this link, xlr8yourmac.com, to a member, which addresses failure of deep sleep with some users that updated and added new FireWire and USB cards.
tomhorvat adds this; After few days of messing around I found out that I had desktop background (wallpaper) set to change every 1 minute.
After unchecking "Change picture..." in system preferences (under Desktop/Screen saver), my powerbook went to sleep all by itself.
Cheers!
DALE

Mac mini running very slow after downloading yosemite

Why is my mac mini (mid 2011) 2.5GHz Intel Core i5 now running very slow in all aspects after upgrading to OS X yosemite 10.10.1?
Here is a recent EtreCheck Report
Problem description:
Mac mini running very slow after upgrading to yosemite
EtreCheck version: 2.1.6 (109)
Report generated January 21, 2015 at 2:56:48 PM PST
Download EtreCheck from http://etresoft.com/etrecheck
Click the [Support] links for help with non-Apple products.
Click the [Details] links for more information about that line.
Click the [Adware] links for help removing adware.
Hardware Information: ℹ️
Mac mini (Mid 2011) (Technical Specifications)
Mac mini - model: Macmini5,2
1 2.5 GHz Intel Core i5 CPU: 2-core
4 GB RAM Upgradeable
BANK 0/DIMM0
2 GB DDR3 1333 MHz ok
BANK 1/DIMM0
2 GB DDR3 1333 MHz ok
Bluetooth: Old - Handoff/Airdrop2 not supported
Wireless: en1: 802.11 a/b/g/n
Video Information: ℹ️
AMD Radeon HD 6630M - VRAM: 256 MB
Cinema HD 1920 x 1200
System Software: ℹ️
OS X 10.10.1 (14B25) - Time since boot: 15 days 18:52:31
Disk Information: ℹ️
Hitachi HTS545050B9A302 disk0 : (500.11 GB)
EFI (disk0s1) <not mounted> : 210 MB
Macintosh HD (disk0s2) / : 499.25 GB (235.76 GB free)
Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
USB Information: ℹ️
Apple Computer, Inc. Apple Cinema HD Display
Apple Inc. BRCM20702 Hub
Apple Inc. Bluetooth USB Host Controller
Apple, Inc. Keyboard Hub
Apple Inc. Apple Keyboard
Primax Electronics Apple Optical USB Mouse
Apple Computer, Inc. IR Receiver
Thunderbolt Information: ℹ️
Apple Inc. thunderbolt_bus
Gatekeeper: ℹ️
Mac App Store and identified developers
Problem System Launch Agents: ℹ️
[killed] com.apple.CallHistoryPluginHelper.plist
[killed] com.apple.CallHistorySyncHelper.plist
[killed] com.apple.cloudd.plist
[killed] com.apple.cmfsyncagent.plist
[killed] com.apple.coreservices.appleid.authentication.plist
[killed] com.apple.EscrowSecurityAlert.plist
[killed] com.apple.icloud.fmfd.plist
[killed] com.apple.Maps.pushdaemon.plist
[killed] com.apple.nsurlsessiond.plist
[killed] com.apple.printtool.agent.plist
[killed] com.apple.rcd.plist
[killed] com.apple.sbd.plist
[killed] com.apple.telephonyutilities.callservicesd.plist
[killed] com.apple.warmd_agent.plist
[killed] com.apple.xpc.loginitemregisterd.plist
15 processes killed due to memory pressure
Problem System Launch Daemons: ℹ️
[killed] com.apple.AssetCacheLocatorService.plist
[killed] com.apple.awdd.plist
[killed] com.apple.ctkd.plist
[killed] com.apple.emond.aslmanager.plist
[killed] com.apple.icloud.findmydeviced.plist
[killed] com.apple.ifdreader.plist
[killed] com.apple.installd.plist
[killed] com.apple.nehelper.plist
[killed] com.apple.nsurlsessiond.plist
[killed] com.apple.periodic-daily.plist
[killed] com.apple.periodic-monthly.plist
[killed] com.apple.periodic-weekly.plist
[killed] com.apple.softwareupdate_download_service.plist
[killed] com.apple.tccd.system.plist
[killed] com.apple.wdhelper.plist
[killed] com.apple.xpc.smd.plist
16 processes killed due to memory pressure
Launch Daemons: ℹ️
[loaded] com.adobe.fpsaud.plist [Support]
[loaded] com.microsoft.office.licensing.helper.plist [Support]
User Launch Agents: ℹ️
[loaded] com.adobe.ARM.[...].plist [Support]
[running] com.spotify.webhelper.plist [Support]
User Login Items: ℹ️
iTunesHelper UNKNOWN (missing value)
AdobeResourceSynchronizer Application Hidden (/Applications/Adobe Reader.app/Contents/Support/AdobeResourceSynchronizer.app)
CDSBupd Application (/Applications/ConceptDraw Office 2/Solution Browser.app/Contents/MacOS/CDSBupd.app)
Internet Plug-ins: ℹ️
Flip4Mac WMV Plugin: Version: 3.1.0.24   - SDK 10.8 [Support]
FlashPlayer-10.6: Version: 16.0.0.257 - SDK 10.6 [Support]
Default Browser: Version: 600 - SDK 10.10
AdobePDFViewerNPAPI: Version: 11.0.09 - SDK 10.6 [Support]
AdobePDFViewer: Version: 11.0.09 - SDK 10.6 [Support]
Flash Player: Version: 16.0.0.257 - SDK 10.6 [Support]
QuickTime Plugin: Version: 7.7.3
SharePointBrowserPlugin: Version: 14.4.5 - SDK 10.6 [Support]
JavaAppletPlugin: Version: 15.0.0 - SDK 10.10 Check version
3rd Party Preference Panes: ℹ️
Flash Player [Support]
Flip4Mac WMV [Support]
GoPro [Support]
Time Machine: ℹ️
Time Machine not configured!
Top Processes by CPU: ℹ️
      27% mds
      12% WindowServer
      1% discoveryd
      1% Microsoft Word
      1% Mail
Top Processes by Memory: ℹ️
253 MB discoveryd
64 MB Mail
52 MB Safari
43 MB iTunes
43 MB Preview
Virtual Memory Information: ℹ️
42 MB Free RAM
768 MB Active RAM
744 MB Inactive RAM
993 MB Wired RAM
104.37 GB Page-ins
4.15 GB Page-outs

More memory will help:
4.15 GB Page-outs
16 processes killed due to memory pressure
15 processes killed due to memory pressure

Mac Mini won't start after installing OS X 10.6.3

My Mac Mini won't start after installing Mac OS X Snow Leopard 10.6.3. When I turn it on, the Apple logo appears and the initialization line starts to fill, but it suddenly stops. It does that again and stops at the same point, but this time it shuts down. What should I do?

If you are coming from 10.5.8, hopefully you backed up your important data first. Your mini will need at minimum, 1 GB of RAM to install Snow Leopard and at least 5 GB of storage remaining on your boot drive.
I treat 10.6.3 as a fresh, full install over a 10.5.8 system. That means I choose Disk Utility from the Installer's menu and repartition the boot drive as a single partition, Mac OS X Extended (Journaled) format, and use the GUID partition scheme from the options button. At this point, while still in Disk Utility, I would verify the drive under First Aid.
Then I turn the installer loose, and reboot into a working 10.6.3 system, ready for the software updates that take the machine to 10.6.8.
So, following the above guidelines, reinstall 10.6.3.

My mac mini does not boot, after backing the enire system onto an external drive with Carbon Copy Clone

My Mac Mini does not boot, after backing the enire system onto an external drive with Carbon Copy Clone. I had switched the start-up disk back to the original of course. Now all I see is the Apple logo. What should I do? Thanks in advance.

Try disconnecting any external devices, especially hard drives
and try rebooting.
If that doesn't help, then :
If you are running Lion, boot to the Recovery HD and run a
Repair Disk on the OSX partition.
If Snow Leopard, boot to the installl DVD and run Repair Disk.
Also, you may want to bookmark this:
http://reviews.cnet.com/8301-13727_7-57345273-263/troubleshooting-the-boot-proce ss-for-intel-macs/?tag=txt;title
for future reference. It is a pretty good explanation of the
Mac boot process and how to identify where problems may be.

Mac Pro display remains black after start up.

My 2008 Mac Pro display remains black after start up. It is plugged in properly and the light comes on, but the screen stays black. It first started doing this about a week ago, but after a manual restart or two, it would start up properly with the display working. Today the display has remained black every time I've tried to start up. Any suggestions for troubleshooting would be greatly appreciated! Thanks!

Safe Mode uses a very simple way of talking to the screen -- it does not even load the screen driver, and it uses a very common low resolution.
If it does not work that way, it simply does not work. You need a replacement graphics card.
User Tip: Mac Pro silver tower (2006-2012) Replacement Graphics cards

MAC Mini does not restart after Yosemite update

I bought my MAC mini in 2011 and I successfully updated to Mavericks with no problems. I am not sure why my MAC Mini will not restart after I updated to Yosemite. The completion bar gets stuck around 30%.
Any help or ideas appreciated
Larry

Okay, this is strange. I tried restarting three times yesterday with the same results. In fact I left it go overnight only to find the next morning that the bar was still stuck at 30%. I did a hard boot a little bit ago and waited a few seconds. I restarted an it booted up fine.
Larry

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

Mac Book Pro - Mac Mini; sharing stopped working after IP/Net change

I apologize in advance for the length of this, I've got a complex issue that I've been unable to diagnose with the usual published notes...
I have a Mac Book Pro and Mac Mini. I previously had sharing and screen sharing working between both systems.
About a month ago I switched internet providers (to AT&T U-verse) and their router required me to make major changes to my internal network as listed below.
Since those changes the Mac Book Pro can not access the Mac Mini in any way via Finder options, but still shows it in Finder->Sharing. I can access the Mini via shell access (telnet/ssh, ftp, www) but nothing via the normal automatic Bonjour type accesses (file sharing, screen sharing).
Conversely, the Mac Mini has no difficulty accessing the Mac Book Pro in any way.
List of the significant changes that were made:
1) My main router was replaced by the AT&T router.
2) The AT&T router does not allow any fixed IP addresses within the network, requiring all of my network shemes to get re-done (I used a mix of fixed and DHCP previously).
3) The IP range changed for all computers due to the router.
4) Both Mac Mini and Mac Book Pro were and still are on DHCP.
5) The Mac Mini's wireless was disabled and it was plugged directly in to the Ethernet port on the main router.
The behavior of the system is as if the Mac Book Pro is locked on the old IP address (but only in the context of the Bonjour services). Although I can't prove this, there was a brief period where both the old and new router and ethernet and plugged connections were all active on the same network and during this period the Mac Book Pro accessed the Mini without difficulty (the old IP was bound to the wireless port on the Mini).
Unfortunately it wasn't until after I had exchanged this other router that I realized that things were not working correctly.
Another unusual clue, the Sharing used to say use afp://<mininame> to access from Windows and now it says afp://QVT_529. I have to assume this is something to do with the DHCP from the AT&T router but all of the AT&T system screens show the <mininame> properly bound to the active DHCP port and nothing hinting at what the QVT_529 references. Going to this address fails and I can't ping it from terminal.
I've been scouring the net for the last month trying different things with absolutely zero results on any front. All settings check out perfectly. No firewall changes were made. No evidence that anything is out of place.
However, I can still only connect in one direction. It just doesn't make sense.
Some things I don't know that I think might help me resolve the issue:
1) Any recommendations with how I might be able to get a better view of what Mac Book Pro might be trying to connect to via the Finder->Sharing link to the computer?
2) Any way to probe the Mac Mini's file or screen sharing features from the terminal (going around the Finder link)?
3) Any possible issues with local networks that might interfere with these services? (there are several switches/hubs between and other devices on the network, but everything checks out at the IP flow level)
Thanks in advance,
Barney

This is just a stab in the dark since I haven't run into this and I don't know all the steps you have taken (or researched.)
It seems to me that since it is working right from the mini->MB Pro, then the problem should reside on the mini's broadcast side or the mini's OSX firewall. If your firewall is set correctly (as you said), my guess would be that network or firewall preferences have been corrupted by combining multiple, conflicting settings for the same preference due to hardware changes. If I was experiencing this (assuming that every setting on the routers/switches and the firewalls (router/OSX) etc were 100% correct), I would create a new user account and verify that the problem is still manifesting itself. If this solves the problem, I know it is the user account that is messed up and not the OS. If this doesn't solve the problem, I turn off any sharing services, delete the resident Locations (by the drop-down menu in the Network System Preference) as well as the list of Connections (left pane of Network SP) and restart the machine. I then set-up new network, sharing services and firewall settings after the restart. This has solved all of my network sharing issues on my equipment, home and work. (Permissions not with-standing.) If this hasn't solved my problem, my next step would be to reset NVRAM, PRAM and clean system caches (using OnyX.) Reinstall of OSX commences then. I don't know enough of UNIX to be comfortable in terminal so if my steps above failed, I would be coming here to ask or, if I thought the problem resided on non-Apple hardware, the offending hardware support channels.
I don't know if this helps, but I hope so.
D.

Mac mini display flickers after update to 10.9.5

It's very annoying especially in Safari when i try to scroll my page. I've tried SMC restrat and NVRAM reset, also HDMI disconetion and changing display resolution wont help with this problem.

Thanks for Your help guys:) And dozens of replys:) If somebody will have simillar problem I can only say that after clean reinstall to 10.9.4 everything works as brand new. I highlly advice not to upgrade to 10.9.5 if You have mac mini with intel HD 4000 and external HDMI display.
One more time thanks fro Your help and many replys:)

Mac Mini display settings change after shutdown

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