Mid 2011 iMac continuity issues!

I have recently upgraded to OS X Yosemite on my Mid 2011 iMac, but continuity doesn't seem to work on it. Is my iMac to old?

I did install Yosemite in my 27" iMac (Mid 2011) last Friday and after 6 hours of use I got display issues. After the iMac comes back from sleep I get pixelated blocks in random areas that stay on background until open a new app window. Two days ago my computer frozen and got pixelated blocks all over the screen. After restart got the graphics problem box and asked me to report it which I did. I restored Mavericks from my time machine and everything was working fine again. Then yesterday afternoon did a Yosemite clean install in my iMac and this morning got the same display issues and computer completely frozen. I restored Mavericks AGAIN and everything is working fine so far!!! I'm gonna stay with Mavericks until Apple release a fix for my issue.

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Having sound issues with Mid 2011 iMac 27"

Having sound issues with Mid 2011 iMac 27". It has 10.10.2 OS X. Could this the issue and if so how do I revert to 10.7.3

It is almost impossible to diagnose sounds over the internet, however here is a link to some failing HD sounds. If one of yours be happy, at any rate take it in for service. If you got AppleCare or it's less than a year old it's covered.
Failing hard drive sounds

Cannot upgrade Thunderbolt firmware on mid-2011 iMac

Hi - I'm having problems updating the Thunderbolt firmware on my mid-2011 iMac (21.5").
Can anyone point me to the proper location for this firmware download? I've found several on the site, but none seem to work for me, due to a variety of OS incompatibilities.
For the curious, here's what my system says:
Hardware Overview:
Model Name: iMac
Model Identifier: iMac12,1
Processor Name: Intel Core i5
Processor Speed: 2.7 GHz
Number of Processors: 1
Total Number of Cores: 4
L2 Cache (per Core): 256 KB
L3 Cache: 6 MB
Memory: 12 GB
Boot ROM Version: IM121.0047.B1F
SMC Version (system): 1.71f22
Thunderbolt Bus:
Vendor Name: Apple Inc.
Device Name: iMac
UID: 0x0001000A15928E80
Route String: 0
Firmware Version: d.16 (Eng 1)
Domain UUID: 78CF7309-6B81-CC54-A320-6D5B13722358
Port:
Status: No device connected
Link Status: 0x7
Speed: Up to 10 Gb/s x2
Receptacle: 1
Port Micro Firmware Version: 1.2.1
And here are the error messages from a variety of firmware update locations:
Thunderbolt Firmware Update v1.2
First error: The package was signed with a certificate that has expired (c'mon Apple!)... Do you want to continue with the installation anyway? (yes!)
Second error: Alert: This software is not supported on your system. (any reason why? OS, old other firmware, what?)
I've tried the tricks of PRAM and SMC resets, moved the com.apple.SoftwareUpdate.plist to the desktop and rebooted, etc., etc., but nothing seems to work.
The issue driving this exploration is that the Thunderbolt port appears to be dead - won't support Target Desktop Mode or the Thunderbolt Gigabit Ethernet adapter.
Thanks in advance for any help!

From that very page, it appears that this model does support Target Display Mode - please see the bold text below.
Am I reading it incorrectly?
Thanks for your help here - it's good to have more than 1 set of eyes looking at this!
- Jeff
What are the requirements for TDM?
A Mac notebook or desktop with a Mini DisplayPort or Thunderbolt connection
A Thunderbolt or Mini DisplayPort cable
A supported iMac with OS X 10.6.1 or later. The table below shows iMac computers that support TDM, the required cables, and the port of the computer to which you are connecting the iMac.
iMac Model
Cable Supported
Port on Source Computer
iMac (27-inch Late 2009)
Mini DisplayPort to Mini DisplayPort
Mini DisplayPort or Thunderbolt
iMac (27-inch Mid 2010)
Mini DisplayPort to Mini DisplayPort
Mini DisplayPort or Thunderbolt
iMac (Mid 2011)
Thunderbolt to Thunderbolt
Thunderbolt
iMac (Mid 2012 and later)
Thunderbolt to Thunderbolt
Thunderbolt

Mid-2011 iMac won't boot Win 8.1 (BC) w/ ACD 30 attached

I have a 27" mid-2011 iMac Core i7 with two external displays, an ACD 30" and a 20" HP. I spent a great deal of time watching Win 8.1 in a reboot loop after install (Apple Drivers installed fine), sometimes with vertical lines down the ACD 30 (nothing on the HP). (I didnt expect Win to notice the more than one DisplayPort screen.) Finally I disconnected the displays and I booted into 8.1 fine.
IS this a thing? Others share this experience?
Thats not the end of my Boot Camp woes, but that's all tied to this issue.
BP

Can you provide details on how each these displays are connected?
From iMac (27-inch, Mid 2011) - Technical Specifications, you have two TB ports, which can support DP connections.
Please also see
Apple Mini DisplayPort adapters: Frequently asked questions (FAQ) - Apple Support
Target Display Mode: Frequently Asked Questions (FAQ) - Apple Support (this not directly related).

Apple DVD player not working on Mid 2011 iMac running 10.7.2

I have a 21.5-inch, Mid 2011 iMac which came with Lion preinstalled. When I insert a DVD, Apple's DVD player comes up with the following error:
"A valid video device could not be found for playback. [-70017]"
The DVD player works. I can play DVDs using VLC, and I can use it to burn in iDVD, but Apple's own DVD player simply will not recognize it. I hoped this problem might be solved when I upgraded to 10.7.2, but alas it has not.
Does anyone know how to fix or work around this issue? This computer is used daily for my media-heavy job, so leaving it somewhere for service is not really feasible unless I'm completely unable to work on it.

Please read this whole message before doing anything.
This procedure is a diagnostic test. It won’t solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of this exercise is to determine whether the problem is localized to your user account, or is system-wide. Enable guest logins and log in as Guest. For instructions, launch the System Preferences application, select “Help” from the menu bar, and enter “Set up a guest account” (without the quotes) in the search box.
While logged in as Guest, you won’t have access to any of your personal files or settings. Any application you run will behave as if you were running it for the first time. Don’t be alarmed by this; it’s normal. If you need any passwords or other personal data in order to complete the test, memorize, print, or write them down before you begin.
As Guest, launch the player and test. Same problem(s)?
After testing, log out of the guest account and, in your own account, disable it if you wish. Any files you created in the guest account will be deleted automatically when you log out of it.

Cannot get my Samsung SyncMaster S27B370 to connect to my Mid 2011 iMac 27

Cannot get my Samsung SyncMaster S27B370 to connect to my Mid 2011 iMac 27 inch with HDMI to thunderbolt port adapter but works like a charm in Windows 7 when I bootcamp over to it. Any ideas? The cable is working properly as shown by the fact that Windows 7 uses both monitors perfectly. I am using Mac OS X Mountain Lion and have already done the option + cmd + p + r boot reset to no avail. It does not find the second monitor at all as in it doesn't even show up in the display preference pane.

birdmanjay wrote:
... Apple tells me it is the printer mfr issue and printer companies tell me it is apple issue.
Arguably, they're both right.
Changing your router changes everything, so your best course of action is to research the respective printer's documentation and determine how to reset them to factory default condition. Then, add them again using System Preferences > Print & Scan.
For that, I recommend you first "reset the printing system" according to these instructions: Mac OS X: How to reset the printing system. Its instructions for Lion are identical to those for Mountain Lion.
As the article states, it will remove all your existing printers, leaving the Mac's printing system in a similar "factory default" condition ready for you to create a new print queue for each printer, which you should probably do.
Apple's printing support documents contain a great deal of redundancy, but this one may be a good place to start: OS X Mountain Lion: Set up a printer to print wirelessly

Sudden restarts while using bootable USB installer (mid-2011 iMac) - evidence of hardware problem?

Greetings:
For a couple of years I've been suffering from an issue reported in many threads: seemingly random shutdowns and restarts of my mid-2011 iMac. These can happen several times a day, or there can be a gap of weeks between occurences. I've searched the web and discussions.apple.com endlessly, and tried every conceivable solution. I've observed no consistent pre-restart pattern in Console. I've tried removing all unnecessary extensions and start-up programs. Fixed permissions, repaired HDD, many of the diagnostic procedures described by LINC (superuser on this forum). I would sometimes get temporary relief from periodic restart loops, by unplugging the computer and resetting PRAM, but this would not last long. I couldn't discern whether it is a software/conflict issue, or a hardware issue. Have run AHT in extended looping mode, several times, and found nothing wrong. Which caused me to keep thinking it must be a software issue. The last thing I've tried is a clean install of Yosemite, with full HDD erase, from bootable USB.
I did this successfully, restored files from Time Machine...but then a few hours later, a series of sudden restarts began, with 4 or 5 within a couple of hours. I decided to shutdown and restart using the bootable USB installer again, and run Disk Utility from it to check the HDD for errors.
But then, while booted up from the USB (and after running Disk Utility with a normal result): the computer suddenly turned off and restarted! And then it rebooted again into installer mode (i.e. running off the bootable USB), and I ran Disk Utility again and ...it happened again!
So what does this tell me? I am asking all of you for confirmation please. I am thinking this is a strong indication that whatever the issue is causing the restarts, it is hardware based, as the system was running off the bootable USB at the time, NOT using installed operating system or software. AND this reminded me of one other instance where the system had rebooted randomly, while I was in SAFE mode.
Would you agree that this is likely now pointing to a hardware issue? Is power supply the likely culprit? Or?? (and recalling that repeated AHT have showed nothing...). Is it worth trying to fix (out of warranty)?
thanks for any insights,
Warren

These instructions must be carried out as an administrator. If you have only one user account, you are the administrator.
This procedure is a diagnostic test. It makes no changes to your data.
Please triple-click anywhere in the line below on this page to select it:
syslog -k Sender kernel -k Message CSeq 'n Cause: -' | tail | awk '/:/{$4=""; print}' | pbcopy
Copy the selected text to the Clipboard by pressing the key combination command-C.
Launch the built-in Terminal application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.
Paste into the Terminal window by pressing the key combination command-V. I've tested these instructions only with the Safari web browser. If you use another browser, you may have to press the return key after pasting.
Wait for a new line ending in a dollar sign ($) to appear below what you entered.
The output of the command will be automatically copied to the Clipboard. If the command produced no output, the Clipboard will be empty. Paste into a reply to this message.
The Terminal window doesn't show the output. Please don't copy anything from there.

My Mid-2011 iMac with pre-installed Lion can't load AHT (Apple Hardware Test) over internet

I have a Mid-2011 iMac (3.4GHz) of which Apple's Support document for the Apple Hardware Test (http://support.apple.com/kb/ht1509) says:
Some Macintosh computers that shipped with OS X Lion support the use of Apple Hardware Test over the Internet. These computers will start up to an Internet-based version of AHT if the hard drive does not contain AHT.
Well, this doesn't work for me. My Mac is on a DHCP-supporting router which has constant internet connection. Yet, when I turn off the Mac and then on again, holding the D key down even before the screen turns on, the Mac does indeed react to this key as it's then turning the screen on and taking another about half minute before it continues with the boot process along with showing the Mac symbol. Without the D, the Mac symbol comes up quickly.
So, it appears that the iMac is indeed trying to get AHT over the internet. Just that it doesn't succeed in it, and probably timing out after a while.
Any suggestions how to fix this?

Re
extract from kb article
PPPoE (where there is no router handling the PPPoE connection)
No
No
Captive-Networks (where you click an "Agree" button to access the Internet)
Yes
No
Proxies (where specific proxy servers must be configured in network preferences)
No
No
Certificate-based authentication / 802.1x
No
No
try check if you are in that case for your internet acces ?
could be a firewall problem too , if is possible try desable firewall ( or any internet filter )
no you can not see a wifi selection if you are wired ( using cable )
by the way D key for AHT need to be pressed AFTER start up sound , and hold at min one minute
HTH
Pierre

Airport network worked fine until I added a mid 2011 iMac

All devices on my airport extreme wifi network are experiencing slow or intermittent internet access since I added my new iMac. Additionally my Xbox hard hard wired to the AirPort Extreme is having connection issues. I purchased a mid 2011 iMac. I upgraded the OS to the 10.8.2 as soon as I got it setup so I have no real baseline of whether this is causing issues, however turning off wifi on the iMac seems to clear up the connectivity issues.

Make a New Location, Using network locations in Mac OS X ...
http://support.apple.com/kb/HT2712
10.7 & 10.8…
System Preferences>Network, top of window>Locations>Edit Locations, little plus icon, give it a name.
10.5.x/10.6.x/10.7.x instructions...
System Preferences>Network, click on the little gear at the bottom next to the + & - icons, (unlock lock first if locked), choose Set Service Order.
The interface that connects to the Internet should be dragged to the top of the list.
10.4 instructions...
Is that Interface dragged to the top of Network>Show:>Network Port Configurations.
If using Wifi/Airport...
Instead of joining your Network from the list, click the WiFi icon at the top, and click join other network. Fill in everything as needed.
For 10.5/10.6/10.7/10.8, System Preferences>Network, unlock the lock if need be, highlight the Interface you use to connect to Internet, click on the advanced button, click on the DNS tab, click on the little plus icon, then add these numbers...
208.67.222.222
208.67.220.220
Click OK.

27" Cinema display goes black, connected to Mid 2011 iMac w/thunderbolt connections.

I bought a used 27" Cinema Display (A1316) and had it connected to my Mid 2011 iMac with thunderbolt connections. The screen goes black but I can still get audio through its speakers. Do I need to replace the cable bundle? Help please!
Levi

Hi levifromhenderson,
Thanks for using Apple Support Communities. Based on what you stated, it sounds like trouble with an external display. I would recommend that you read this article, it may be able to help the issue.
Apple computers: Troubleshooting issues with video on internal or external displays - Apple Support
Reset the system
You can reset the Mac's parameter RAM and SMC.
Cheers,
Mario

I have a 27in mid 2011 iMac and a 2006 mac mini

i have a 27in mid 2011 iMac and i have been given a 2006 mac mini i have no screen to see whats going on on the mini and there is no os onboard how do i get OS X on to the mini so i can get to use this with a tv with hdmi i have the mini dvi to vga connector and a vga to hdmi lead into a samsung 32in led tv, tv keeps saying not connected???

- You said "Apple dvi to via converter with a via to hdmi cable . What is a "via"? I think you mean VGA.
Just what VGA to HDMI cable to you have? VGA is analogue while HDMI is digital. The Mini DVi out is both analogue and digital (DVI-AD). You would need a converter to convert the analogue VGA to digital.
- Yes, when you boot up you should get a chime if the Mac is functional. The chime The sound indicates that diagnostic tests run immediately at startup have found no hardware or fundamental software problems.[1]
http://en.wikipedia.org/wiki/Macintosh_startup
Thus it appears the Mini also has a hardware problem.
Make an appointment at the Genius Bar of an Apple store. It is free.
Apple Retail Store - Genius Bar

Is there a way to run a 2005 PreSonus Firebox(with the firewire) to a mid-2011 iMac 0SX 10.7.2? It says its no longer supporting Power PC? Anything I can do without spending more money on new equipment or a new computer? Please help me.

Is there a way to run a 2005 PreSonus Firebox(with the firewire) to a mid-2011 iMac 0SX 10.7.2? It says its no longer supporting Power PC? Anything I can do without spending more money on new equipment or a new computer? Please help me.

Nevermind, I got it working.
I ended up extracting the new vob within MPEG Streamclip, which gave me an m2v and an aiff audio. I multiplexed those two back together in FFMpegX which gave me a complete VIDEO_TS folder with BUP and IFO files I needed.

Is there a way to run a external ssd with my mid 2011 iMac hdd in a raid configuration and basically have a fusion drive

is there a way to run a external ssd with my mid 2011 iMac hdd in a raid configuration and basically have a fusion drive

A Fusion Drive is not a RAID; it's a CoreStorage logical volume group. While it's technically possible to do as you suggest, there would be little or no benefit from it.

The dropdown menu from the Creative Cloud icon on the menu bar keeps giving me the following message: "Download Error" I quit and restarted the creative cloud app to no avail. Running Mavericks on a mid 2011 iMac.

The dropdown menu from the Creative Cloud icon on the menu bar keeps giving me the following message: "Download Error" I quit and restarted the creative cloud app to no avail. Running Mavericks on a mid 2011 iMac.

Try below steps once
click Gear icon on the top Right corner and Quit Creative Cloud App
Click on Finder and then hold Command + Shift + G keys on your keypad
It will open Go to folder window, type exactly ~/Library and click on Go
Make sure to open ~/Library not /Library ( there will be two Library folders )
Then open Application Support > Adobe folders
Trash AAMUpdater and OOBE folders.
Then launch Creative Could and check.

How do I restore my 27" mid-2011 iMac EXACTLY the way it was after hard disk replacement?

Hi all.
Recently received an email from Apple saying that the 1TB Seagate hard drive in my 27" mid-2011 iMac is apt to fail anytime. Apparently they used some bad hard drives in the mid-2011 27" iMacs which are problematic so they're offering me a free replacement to a brand new hard drive. I'll be sending in my iMac for the replacement sometime in the next few days.
In preparation for it, I've backed up my entire system using Time Machine into an external harddrive. The backup is up to date & includes all system files. I've also made a Lion install disk on an 8GB USB flash/pen drive using Carbon Copy Cloner.
My question is: When I get my iMac back after the hard disk replacement, will I be able to restore my iMac to EXACTLY the way it was before the replacement using the Time Machine backup & the Lion install disk that I've prepared? When I mean EXACTLY, I do mean EXACTLY, e.g I don't have to re-install all the programs I have, my settings for the programs I have will stay intact, everything is where it should be etc...i.e EXACTLY the way my iMac is right now.
If yes, how do I do it? I've read Pondini's guide: http://pondini.org/TM/14.html
However it is less than clear on certain points, e.g in my case, which one do I have to use to restore my system to the way it was...the Time Machine backups I have on the external HDD or the Lion install disk that I made using Carbon Copy Cloner? And how do I go about doing the restore?
I'd appreciate any & all help given. Thanks in advance!

daniirwan wrote:
baltwo: Thanks for your input! I didn't think of wiping the old HDD before sending it in for the replacement..all those sensitive user data! One question: What's a FWHD?
Already answered. Just note that FW is much faster than USB. See http://help.bombich.com/kb/troubleshooting/how-long-should-the-clone-or-backup-t ake for details.
I already have CCC installed so I'll probably try it out. Are the steps outline here the one that I should do to restore the CCC clone when I get my Mac with the new HDD back? See: http://help.bombich.com/kb/overview/restoring-data-from-your-backup#full_volume_ restore
Yes.
Another question: while I'm booted on the backup/clone, and just after I've wiped the old HDD, how do I reinstall the OS to create a generic user account? Will I have to use a Lion install USB disk?
No. IIRC (if I remember correctly), you can either use a saved Lion installer (hopefully it exists on your backup/clone) or use the Recovery HD. If you have the USB stick w/Lion installer on it, use that.

Mid 2011 iMac continuity issues!

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