Late 2012 iMac graphics issues with Mavricks

Everr since I updated to Mavricks I've been experiencing graphics issues.
When waking from sleep or screen saver, the area outside the active window is black, including the app bar at the bottom. Moving my mouse around those areas sometimes will display my background from black but not always.
Also, when playing CIV 5 on occasion, the computer will restart itself and take me back to the log-in window

OS X: Login window partially appears, cursor movement redraws screen

Similar Messages

IMac 27" (late 2012) having graphics issues

I am unable to run any application or game that makes use advanced graphics. A few examples:
Diablo, WoW, Skyrim, ESO all will load and crash after less than 10 seconds. All the while there are rendering erros shooting solid color triangles around the screen.
Maps will constantly flicker small random patches of the map.
Safari is having trouble with the fonts. IT will stretch out the letters and keep them displaying that way even while scrolling.
I have done everything I know to do.
Updated to maverick 10.9.3
repaired permissions
reset Pram
booted in safe mode
Ran the hardware check for 1.5 hours and got no errors
In an attempt to make sure it wasnt the physical display Mirrored to apple tv, all flickering was shown there as well.
Here are my imacs specs:
iMac 13,2
Intel core i7, 3.4 ghz
16 gb
Nvidea GeForce GTX 680MX,PCIe, 2048 MB
Any help and advice would be greatly appreciated.

EtreCheck version: 1.9.11 (43) - report generated June 7, 2014 at 11:42:28 AM CDT
Hardware Information:
          iMac (27-inch, Late 2012)
          iMac - model: iMac13,2
          1 3.4 GHz Intel Core i7 CPU: 4 cores
          16 GB RAM
Video Information:
          NVIDIA GeForce GTX 680MX - VRAM: 2048 MB
System Software:
          OS X 10.9.3 (13D65) - Uptime: 0 days 2:17:10
Disk Information:
          APPLE HDD WDC WD10EALX-408EA0 disk1 : (1 TB)
                    EFI (disk1s1) <not mounted>: 209.7 MB
                    disk1s2 (disk1s2) <not mounted>: 999.35 GB
                    Recovery HD (disk1s3) <not mounted>: 650 MB
          APPLE SSD SM128E disk0 : (121.33 GB)
                    EFI (disk0s1) <not mounted>: 209.7 MB
                    disk0s2 (disk0s2) <not mounted>: 120.99 GB
                    Boot OS X (disk0s3) <not mounted>: 134.2 MB
USB Information:
          Western Digital My Book 1140 3 TB
                    EFI (disk3s1) <not mounted>: 314.6 MB
                    My Book (disk3s2) /Volumes/My Book: 3 TB (2.23 TB free)
          Logitech USB Receiver
          Razer Razer Naga Epic
          Apple Inc. iPhone
          Apple Inc. FaceTime HD Camera (Built-in)
          Apple Inc. BRCM20702 Hub
                    Apple Inc. Bluetooth USB Host Controller
Thunderbolt Information:
          Apple Inc. thunderbolt_bus
Gatekeeper:
          Mac App Store and identified developers
Kernel Extensions:
          [not loaded] com.Creative.driver.THXTruStudioPCUSBAudioPlugin (1.2.3) Support
          [not loaded] com.Creative.driver.THXTruStudioPCUSBAudioPlugin64 (1.2.3) Support
Launch Daemons:
          [loaded] com.adobe.fpsaud.plist Support
          [loaded] com.microsoft.office.licensing.helper.plist Support
Launch Agents:
          [loaded] com.citrix.AuthManager_Mac.plist Support
          [running] com.citrix.ReceiverHelper.plist Support
          [running] com.citrix.ServiceRecords.plist Support
          [running] com.creative.thxtrustudiopc.plist Support
User Launch Agents:
          [running] com.spotify.webhelper.plist Support
User Login Items:
          iTunesHelper
          Spotify
          BitTorrent
          Dropbox
Internet Plug-ins:
          FlashPlayer-10.6: Version: 13.0.0.214 - SDK 10.6 Support
          QuickTime Plugin: Version: 7.7.3
          Flash Player: Version: 13.0.0.214 - SDK 10.6 Support
          GameTreeDM_NPAPI: Version: 1.11 - SDK 10.6 Support
          Default Browser: Version: 537 - SDK 10.9
          CitrixICAClientPlugIn: Version: 11.8.2 - SDK 10.7 Support
          SharePointBrowserPlugin: Version: 14.1.0 Support
          Silverlight: Version: 5.1.30214.0 - SDK 10.6 Support
          GameTreeDM: Version: 1.4 - SDK 10.5 Support
Audio Plug-ins:
          BluetoothAudioPlugIn: Version: 1.0 - SDK 10.9
          AirPlay: Version: 2.0 - SDK 10.9
          AppleAVBAudio: Version: 203.2 - SDK 10.9
          iSightAudio: Version: 7.7.3 - SDK 10.9
iTunes Plug-ins:
          Quartz Composer Visualizer: Version: 1.4 - SDK 10.9
User Internet Plug-ins:
          WebEx64: Version: 1.0 - SDK 10.6 Support
3rd Party Preference Panes:
          Flash Player Support
Time Machine:
          Auto backup: YES
          Volumes being backed up:
          Destinations:
                    My Book [Local] (Last used)
                    Total size: 3
                    Total number of backups: 73
                    Oldest backup: 2013-06-01 19:17:43 +0000
                    Last backup: 2014-06-07 16:01:13 +0000
                    Size of backup disk: Excellent
                              Backup size 3 > (Disk size 0 B X 3)
          Time Machine details may not be accurate.
          All volumes being backed up may not be listed.
Top Processes by CPU:
              10%          mds_stores
               6%          iTunes
               4%          Agent
               3%          WindowServer
               2%          Blizzard Launcher
Top Processes by Memory:
          541 MB          iTunes
          197 MB          Agent
          197 MB          com.apple.MediaLibraryService
          197 MB          com.apple.WebKit.WebContent
          197 MB          Safari
Virtual Memory Information:
          1.45 GB          Free RAM
          4.91 GB          Active RAM
          8.55 GB          Inactive RAM
          1.09 GB          Wired RAM
          810 MB          Page-ins
          0 B          Page-outs

IMac (27-inch, Late 2013) with iMac (27-inch, Late 2012) in TDM issue

With the late-2013 iMac 27" (3.5 GHz, 32 GB RAM, 3 TB Fusion, Mavericks 10.9.4) as the primary and the late-2012 iMac 27" (3.4 GHz, 16 GB RAM, 3 TB Fusion, Yosemite Beta 10.10) in TDM, the screen on the target display blinks off and on (goes black and comes right back after a split second). It happens intermittently, regardless of which Thunderbolt port is used to connect the two computers. The other Thunderbolt port on the primary is used to connect two external FW800 drives via a Thunderbolt-to-FW800 adapter.
Through exhaustive testing, and in constant consultation with AppleCare senior advisors, I have seemingly ruled out all obvious potential hardware or software culprits:
An AVR is feeding both computers consistent power.
Each computer's RAM and video cards have been tested with TechTool Pro 7: everything passed.
The Thunderbolt cable has been replaced.
Reset the NVRAM and SMC on both computers (though with all the testing I've done since, it might not hurt to do this again).
Both computers have been running the latest version of OS X (the target display is currently running Yosemite Beta).
Made sure to enable TDM after the primary iMac has completed its full startup process.
Turned down the display brightness on both computers.
Trashed the com.apple.windowserver.plist file on the late-2013 iMac.
None of these steps have resolved the problem and I am having NO other issues with either computer. I'm stumped, as are the AppleCare senior advisors I've been working with. This issue has been present since I first connected these two computers this way. Design flaw not revealed in testing? Problem part not revealed in testing?
Anyone here seen anything like this or have any ideas of what else I can try? Help would be greatly appreciated!
Thanks,
Dana

Purchase a Windows PC?? Gasp, indeed! No, after months of software and hardware troubleshooting with an AppleCare senior advisor, and me refusing to believe my brand new 2013 iMac could have a hardware defect, I finally took my entire configuration (both iMacs, voltage regulator, back-UPS) in to my local Apple Store. They were able to replicate the issue, but then misdiagnosed the problem and replaced an internal display cable. Within minutes of reconnecting everything at home, the problem returned. So AppleCare sent an authorized service tech to my home to replace the logic board. That seems to have finally solved the problem. Inconveniently, the tech didn't have what he needed to flash the new logic board with my serial number right then, so I had to wait two weeks to get that done. It did finally get done though, and now all is well.
Good luck with your issue!

Issue with Fusion drive (Late 2012 iMac)

I have a late 2009 iMac that has been backed up with Time Machine. I recently picked up a late 2012 iMac with the 1TB Fusion drive. When I first plugged in my Time Machine drive, I was asked if I'd like to transfer my files over. I did, and everything was working fine. I was using about 800GB of my 1.12TB Fusion Drive.
I recently decided to add a new partition to the Macintosh HD in order to put Windows on it. I did this through the Disk Utility. I noticed that it was taking an inordinately long time to create this partition. Finally, I realized that the Disk Utility was locked up. I was forced to reboot to fix it.
I went back and tried again and I got an error stating that the drive had errors and I couldn't make a new partition. So I attempted to "repair disk". That gave me an error "Error: This disk needs to be repaired using the Recovery HD. Restart your computer, holding down the Command key and the R key until you see the Apple logo. When the OS X Utilities window appears, choose Disk Utility."
So I rebooted into recovery. Recovery was absolutely no help either. It couldn't repair the drive, even though it had me erase all the data. So I downloaded 10.8.2 on my Mac Mini and made a boot disk out of my Thunderbolt drive. I booted into OS X and tried again to repair, thinking it would work since the Fusion was no longer the boot drive. No such luck. I then booted back into recovery and had recovery download and install a fresh version of 10.8.2. 2+ hours into the download/install, I get an error that says "OS X couldn't be installed because the disk Macintosh HD is damaged and can't be repaired."
Ok, so as a final attempt, I had recovery use my time machine to start over. That worked, kinda. It now shows my Fusion drive as being completely filled in Disk Utility (49KB remains, only about 800 or so was used before), and Finder shows the Fusion drive as being 860GB capacity with 837GB used. I still can't repair the disk. And now my Time Machine acts like I'm working on an entirely new computer and says there's not enough room on the drive unless I format my Time Machine drive and start over.
Yeah, TL;DR, but does anybody have any idea how I can get this issue resolved? I wonder if doing the TM restore from my 2009 iMac may have introduced the non-Fusion version of Disk Utilities that doesn't know how to fix my issue.

Yes I have AppleCare.
Before that I've now made a bootable disk and tried to repair the internal drive, but this was not possible.
I have a Time Machine backup, but excluded some temporary folders.
Is there a way to access these folders in case they aren't in a damaged area?
Maybe using "Target Disk mode"?
I've never done this before.
This Mac has no FireWire, but we have an adaptor for Thunderbolt to FireWire - could I connect an older Mac with FireWire using this adaptor for Target Disk Mode?
Many thanks.

Speeding up my iMac late 2012 iMac with external Thunderbolt SSD

I am a motion graphics editor and would like to get better speed from my late 2012 iMac with a 3 TB Fusion Drive.
I have three questions:
1. Does the Fusion drive in this iMac always run the iOS and apps on the ssd part of the fusion drive?
2. If not, is there a way to make that happen?
3. If I add an External Thunderbolt 512GB SSD Drive, will I get a significant boost in performance by keeping the files (video and images) on the SSD, or would After Effects need to reside on the new SSD as well?
I would really appreciate help from anyone that has the expertise to answer this question.
Thank you.
Will H.

Hi there ScharadL,
I would recommend taking a look at the troubleshooting steps boot issues found in the article below.
Mac OS X: Gray screen appears during startup
-Griff W.

[Guide] Install and run Windows 7/8 from an external drive without using bootcamp (works for late 2012 iMacs with 3TB drive)

This is a copy of a post from my blog, you can also Read it on my blog...
Introduction
After I received my new iMac with a 3 TB Fusion Drive, I was disappointed when I realized that Bootcamp was not running on this model and prevented me from installing Windows on it. I wanted to take advantage of the powerful iMac hardware to play games but I couldn't.
There are a few ways of working around this limitation, but I found most of them quite complex and most of the time they required formatting the internal hard drive or repartitioning it and go for a brand new installation of Mac OS X. I was not comfortable with that.
But there is another way, and that is to install Windows on an external hard drive, using either USB or Thunderbolt. Personally I used a Lacie Rugged 1 TB drive that has both USB3 and Thunderbolt connectors. Both work very well.
This guide may interest you if:
You have an internal hard drive of more than 2TB and you can't run bootcamp at all (like late 2012 iMacs with a 3TB drive)
You have limited space or you don't want to dedicate disk space on your internal hard disk drive to a Windows installation
What this guide will make you do:
It will make you erase all your data from your external USB3/Thunderbolt hard drive
It will make you install Windows on your external USB3/Thunderbolt hard drive
It will make you install bootcamp drivers
What this will not make you do:
It will not make you modify anything on your internal Mac hard drive
It will not make you use or install the bootcamp assistant
It will not activate the Preference Pane for the default boot drive. You have to boot by pressing the ALT key to manually select your boot drive each tome you want to boot Windows.
What you'll need
An external hard drive with a USB3 and/or Thunderbolt connector. This drive will be formatted so ensure you saved your files before going further. You can use either an SSD drive or a classic hard drive.
A Windows 7 or 8 install DVD or ISO (check whether to install 32 or 64 bits versions based on your Bootcamp drivers) and the corresponding Windows serial number.
One of the following:
Mac OS X with a Windows 7 or 8 Virtual Machine (use VMWare Fusion or Parallels Desktop for example. Note: VMWare Fusion seems to have some issues with Thunderbolt and USB3. Plug your drive to a USB2 enclosure or hub to work around this -it worked for me-, or use another VM software) → Read the important note below
A PC running Windows 7 or 8 → Read the important note below
Windows AIK (free) running on your Virtual Machine or on your PC, or just the imagex.exe file (the rest of the Windows AIK package is not needed)
Download imagex.exe
Download Windows AIK (this download and installation is not required if you have already downloaded imagex.exe)
Bootcamp drivers for your Mac. You can get these either by running bootcamp from your Mac (Applications > Utilities > Bootcamp) or, if like me you have a 3TB drive and can't run bootcamp at all, use the direct download links here.
A USB stick to store your bootcamp drivers
IMPORTANT: If your Mac has a 64 bits processor, your Windows Virtual Machine on OSX, your Windows installation on your PC and your Windows DVD/ISO must also be in 64 bits!
Step by Step guide
Step 1: Get the install.wim file
If you have a Windows ISO file:
Mount the ISO
If you're on OS X: double click on the ISO file
If you're on on Windows 7: Use a software like Virtual Clone Drive (free)
If you're on Windows 8: double click on the ISO file
Open the mounted drive, then go to the "sources" folder and locate the "install.wim" file. Save this file to C:\wim\ on your Windows installation or virtual machine.
If you have a Windows DVD: open the "sources" folder on the DVD and locate the "install.wim" file. Save this file to C:\wim\ on your Windows installation or virtual machine.
IMPORTANT: If instead of a "install.wim" file, you have "install.esd", you can not continue this step by step guide. And an ESD file can not be converted into a WIM file. So you must get a version of the Windows installation DVD/ISO that has an install.wim file.
Step 2: Clean, partition and format your external hard drive
On your Windows installation or virtual machine, plug in your external hard drive (can be plugged using USB2, USB3 or Thunderbolt at this stage)
Open the command prompt in administrator mode (cmd.exe). To run it in administrator mode, right click on cmd.exe > Run as admin.
Type the following and hit enter to open the disk partitioner utility:
diskpartType the following and hit enter to list your drives:
list disk
This will display a list of disks mounted on your computer or virtual machine. Make sure your drive is listed here before you continue.Identify the disk ID of your external hard drive. Replace # by your real external disk ID in the command below:
select disk #Clean all partitions by typing the following (warning: this will erase all data from your external drive!):
clean
Create the boot parition by typing the following followed by the enter key:
create partition primary size=350
This will create a 350MB partition on your external driveFormat the partition in FAT32 by typing the following:
format fs=fat32 quick
Set this partition to active by typing:
active
Assign a letter to mount this partition. We will use letter B in our example. If B is already used on your PC, replace B by any other available letter:
assign letter=b
Windows will detect a new drive and probably display a pop-up. Ignore that.Create the Windows installation partition using all the remaining space available on the external drive by typing the following:
create partition primary
Format the new partition in NTFS:
format fs=ntfs quick
Assign a letter to mount this partition. We will use letter O in our example. If O is already used on your PC, replace O by any other available letter:
assign letter=o
Windows will detect a new drive and probably display a pop-up. Ignore that.Exit the disk partitioner utility by typing:
exit
Step 3: Deploy the Windows installation image
Still using the command prompt in admin mode (you didn't close it, did you? ), locate the imagex.exe file mentioned in the "What you'll need" section and access its folder. In our example, we have put this file in C:\imagex\imagex.exe
Type the following and hit enter (remember to replace o: with the letter you have chosen in the previous step):
imagex.exe /apply C:\wim\install.wim 1 o:
This will take some time. The Windows installation image is being deployed to your external driveOnce done, type the following to create the boot section (remember to replace o: and b: with the letters you've chosen in the previous step):
o:\windows\system32\bcdboot o:\windows /f ALL /s b:
If you get an error message saying that you can't run this program on your PC, then most probably you are running on a 32 bits installation of windows and you're trying to deploy a 64 bits install. This means you did not read the important notes in the beginning of this guide
If you get an error message on the options that can be used with the BCDBOOT command, then it's because you're installing Windows 7, and the /f option is not supported. If that is the case, remove /f ALL from the command and retry.
Step 4: Boot from your external drive and install Windows
Plug in your external drive:
If you've done all the previous steps from a Windows PC, unplug your external drive from your PC and plug it to your Mac, either on a USB3 or a Thunderbolt port.
If you've done all the previous steps from your Mac using a Virtual Machine, ensure the external drive is plugged in to a USB3 or Thunderbolt port. Using USB2 should also work but you'll get very poor performance so I don't recommend doing that.
Reboot your Mac and once the bootup sound is over, immediately press the ALT (option) key and release it only when the boot drives selection screen appears. If you did not get the boot drives selection screen, reboot and try again. The timing to press the ALT (option) key is quite short. It must not be too early or too late.
On the boot selection screen, choose "Windows" using the arrow keys on your keyboard, then press enter.
The Windows installation starts. Follow the on-screen instructions as normal. The installation program will restart your computer one or 2 times. Don't forget to press ALT (option) right after the bootup sound, and boot on Windows again each time to continue the installation.
Step 5: Install bootcamp drivers
Once the Windows installation is complete, plug in the USB stick where you stored the bootcamp drivers (see "what you'll need" section), open it and right click on "setup.exe" and select "Run as admin". Follow the on-screen instructions.If you have an error saying that you can't run this program on this PC, obviously you have installed a 32 bits version of Windows and the bootcamp drivers for your Mac are made for a 64 bits version. You have to restart the whole guide and make sure to get a 64 bits version of Windows this time!
Once the bootcamp drivers are all installed, reboot and press ALT (option) after the bootup sound to boot on Windows again. And Voilà, you have Windows installed on your USB3/Thunderbolt drive running on your Mac.
Now each time you want to boot on Windows, press and hold the ALT (option) key after the startup sound and select "Windows", then press Enter.

Hi i'm trying to follow your guide, I installed windows 8 on bootcamp to do it planning to remove it after the operation is done, but i get stuck at part 3: every command i give to imagex i get a pop-up ftom windws asking how do I want to open this kind of file install.wim and imagex does nothing, what do i have to do to stop those pop-ups?

Help for with slow, glitchy (late 2012) iMac

This is an ANSWER and not a request for help. I didn't know where to post this and apologize for stepping where I shouldn't.
I have a Late 2012 iMac that has been crashing, running slow, and now worse; all my documents and everything in Finder have disappeared. I discovered a fix that may help others with similar issues. I use my iMac for use with Logic Pro X and Mainstage where freezeups are a disaster. I thought about this awhile and realized I had installed a new USB 3.0 external hard disk a few months ago when this issue began. I began to experience more and more crashes and extremely slow performance. Beach-balls and slow performance were common. But the last straw was when everything in Finder disappeared. My Document and Application folders were empty. If I clicked on "About This Mac" I saw nothing. It took two tries to prove my theory, but here's what I did to make "the fix". I unplugged the USB 3.0 drive and all USB and external devices. I did a restore of OSX Mt Lion. All was back to normal. But after plugging in the USB 3.0 drive, all the afore mentioned problems came back. I did one more restore, this time NOT connecting the USB 3.0 external hard disk. Now I have gone some time and my iMac's speed is back to "incredible", no beach balls or any sign of slow performance in recording or running any other app. Apparently, the 2012 iMac; although spec'ed to be USB 3.0 compatible, may not be all that compatible. Hope this helps someone!

Likely the external drive is bad or defective cable.

Graphic Issues with Leopard - iMac 24" White GeForce 7300 GT

Upon installing Leopard, I've noticed several graphics issues and general lag and delayed response with the interface. I'm running a 24" iMac 2.16ghz White early 2007, 3gb of RAM, with the GeForce 7300GT card. I have Time Machine disabled, and Spotlight has fully indexed.
When installing Leopard, I did an "Erase and Install" and have manually installed my Applications after the Leopard install. I'm using only a few applications that are all "Leopard ready" and have a relatively clean system at this point. I have also cleaned the PRAM, per the recommendations in some of the threads ive read, which didn't seem to correct the issue in this case.
It seems that any time I run any type of video or graphical application, such as Photo Booth, World of Warcraft, iChat, etc, I get a large amount of lag and slow response with the interface. Windows respond very slowly, and the applications freeze for 15-20 seconds. Even when not engaging any applications, opening folders in the finder as well as the dock appear to stall and respond very slowly.
Aside from these issues, Leopard has performed very well and I have had no other issues. Quicklook and coverflow all seem to respond very quickly and smoothly. My guess is that it may be driver related as it seems to be centered around items that are engaging the video card, though it is strange how some graphical effects seem to work smoothly while others are rather choppy. I have been watching the Activity Monitor and there don't appear to be any processes that are sucking up CPU, and nothing obvious that may be reducing performance.
I'm just curious if anyone else has noticed anything similar to this on similar hardware, or possibly may know what the culprit could be. My best guess, again, is that it could be the drivers or firmware with this specific hardware that I'm using.
Thanks for your time

I've had the same graphics issues with my white iMac 24 (serial no starts W8638), but with the GeForce 7600 card. AppleCare got me to do all the usual stuff (reset PRAM, clean Leopard install etc) but problems continued. The usual pattern is that after a while horizontal lines appear (usually in Safari) and things deteriorate form then on until there is so much pixellation that I have to turn off and back on.
Yesterday I ran for several hours using SMCFanControl to set the fans to max and had no problems, so my suspicion is that the additional graphics requirements of Leopard are over-heating the graphics card or logic board.
The Apple engineer took the machine away today and said they'll probably replace the logic board and graphics card (I think they can't change one without the other in the iMac?).
Will be a few days but I'll report back on what repairs they make and whether they solve the problem. My fear is that any changes they make will have no effect if its a design problem and the card is just not up to the job without over-heating. Though it could be the card just needs a good clean
Has anyone else tried increasing fan speed?

Airplay Problem with Late 2012 iMac

Hi all,
Since I bought the iMac, I was never able to function the Airplay.
Spend hours with tech support on the phone, but stil not resolved.
These is no option in Display Preference at all.
Try everything with router, change network, still nothing.
The weird part is, Airplay does work on iTunes.
I also tried install fresh OSX (Mountain Lion), still the same.
I am now on Mavericks, hoping that new OS will solved it, still nothing.
Is there anyone that know what else to do before I bring the iMac to the store?
Cheers,
Aaron

Welcome to Apple Support Communities
It looks like you have an unsupported iMac. Are you sure you have got a Late 2012 iMac? You can check it in  > About this Mac > More Info

Re: Graphic Issues with Leopard - iMac 24" White GeForce 7300 GT

I noticed the same issue. It's especially noticeable in Photo Booth. The video and sound don't sync up.

I've had the same graphics issues with my white iMac 24 (serial no starts W8638), but with the GeForce 7600 card. AppleCare got me to do all the usual stuff (reset PRAM, clean Leopard install etc) but problems continued. The usual pattern is that after a while horizontal lines appear (usually in Safari) and things deteriorate form then on until there is so much pixellation that I have to turn off and back on.
Yesterday I ran for several hours using SMCFanControl to set the fans to max and had no problems, so my suspicion is that the additional graphics requirements of Leopard are over-heating the graphics card or logic board.
The Apple engineer took the machine away today and said they'll probably replace the logic board and graphics card (I think they can't change one without the other in the iMac?).
Will be a few days but I'll report back on what repairs they make and whether they solve the problem. My fear is that any changes they make will have no effect if its a design problem and the card is just not up to the job without over-heating. Though it could be the card just needs a good clean
Has anyone else tried increasing fan speed?

Late 2012 iMac Freezes every few days

My iMac has been in the Apple Store for a week with the Geniuses and they came back saying they couldn't find anything so putting this out to this community in the hope someone else can help. Here are the details.
Model: 21.5 inch Late-2012 iMac
RAM: 8Gb
Processor: 2.9Ghz Intel Core i5
Graphics: NVIDIA GeForce GT 650M 512 MB
Hard Drive: 1.12 Tb Fusion (653Gb free)
OS: 10.8.4
Software: Fairly vanilla with no MS or Adobe Apps. No system extensions or hacks installed.
Symptom: Every few days or so the iMac locks up. Certain running applications will still work but many common ones such as Pages, Aperture, App Store & TextEdit will hang when trying to open. Force Quitting them doesn't affect them. When I try to shut down the computer it goes to the grey screen and stays there. Eventually the power needs to be turned off to reboot it. This has been doing this for the last several months.
Solutions Tried:
- Fixed permissions
- Reset PRAM
- Re-install OS X
I can't replicate the crash but today it happened again. At around 3:50pm I went to the iMac and noticed that Pages wouldn't load. Force quitting the App didn't do anything. Aperture was not responding so force quit that. Still wouldn't re-open. Mail was working fine and I was able to send a test message. Safari worked fine. Launched System Preferences ok but could not launch TextEdit or App Store. Calendar opened and closed fine. Attempted to restart the Mac but got the grey screen and after 5 minutes of waiting turned the computer off & relaunched it.
Here is a snapshot of some Console entries:
5/09/13 2:27:41.316 PM coreaudiod[122]: Enabled automatic stack shots because audio IO is inactive
5/09/13 2:28:16.449 PM coreaudiod[122]: Disabled automatic stack shots because audio IO is active
5/09/13 2:28:17.262 PM coreaudiod[122]: Enabled automatic stack shots because audio IO is inactive
5/09/13 2:28:50.579 PM com.apple.usbmuxd[68]: _heartbeat_failed heartbeat detected detach for device 0xdf3-10.0.1.10:0!
5/09/13 2:37:54.690 PM com.apple.usbmuxd[68]: _heartbeat_failed heartbeat detected detach for device 0xdfc-10.0.1.10:0!
5/09/13 2:42:04.656 PM lsboxd[209]: @AE relay 61657674:6f646f63
5/09/13 2:47:21.156 PM com.apple.usbmuxd[68]: _heartbeat_failed heartbeat detected detach for device 0xe05-10.0.1.11:0!
5/09/13 4:03:23.428 PM com.apple.launchd[1]: *** launchd[1] has started up. ***
5/09/13 4:03:23.428 PM com.apple.launchd[1]: *** Shutdown logging is enabled. ***
5/09/13 4:03:24.934 PM com.apple.launchd[1]: (com.apple.automountd) Unknown key for boolean: NSSupportsSuddenTermination
5/09/13 4:03:26.157 PM airportd[30]: _processDLILEvent: en1 attached (down)
5/09/13 4:03:26.342 PM UserEventAgent[11]: Captive: [HandleNetworkInformationChanged:2435] nwi_state_copy returned NULL
5/09/13 4:03:26.609 PM fseventsd[39]: event logs in /.fseventsd out of sync with volume. destroying old logs. (419745 5 419906)
5/09/13 4:03:26.612 PM fseventsd[39]: log dir: /.fseventsd getting new uuid: A3689432-84D2-4FB0-8C25-0352BC004F8B
5/09/13 4:03:26.666 PM mDNSResponder[40]: mDNSResponder mDNSResponder-379.38.1 (Apr 25 2013 19:19:56) starting OSXVers 12
Notice that the last Console entry was at 2:47pm (in red) and then nothing. I went to use the computer at 3:50pm and did several actions on it. Plugged in iPad, opened iTunes. Copied a file from the iPad to the desktop. Prior to that it hadn't been used for several hours. The shutdown that I selected does not appear in the log (although it only managed to go to the grey screen rather than complete a full shut down).
Appreciate any clues at all here. This is very frustrating and has been going on for far too long.
TIA. Jordan

Back up all data immediately as your boot drive may be failing.
If you have more than one user account, these instructions must be carried out as an administrator.
Triple-click anywhere in the line below on this page to select it:
syslog -k Sender kernel -k Message CReq 'Channel t|GPU D|I/O|Previous Sh' | tail | open -ef
Copy the selected text to the Clipboard (command-C).
Launch the 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 (command-V).
The command may take a noticeable amount of time to run. Wait for a new line ending in a dollar sign (“$”) to appear.
A TextEdit window will open with the output of the command. If the command produced no output, the window will be empty. Post the contents of the TextEdit window (not the Terminal window), if any — the text, please, not a screenshot. The title of the window doesn't matter, and you don't need to post that.

Late 2012 imac bootcamp error"Non system disk, press any key to reboot"

Hey all,
I'm having all sorts of issues with getting windows 7 installed through bootcamp. I have the late 2012 imac 27 inch fusion i7 16 gigs of ram 680gtx. I downloaded the latest bootcamp drivers to my usb after i re-formated it. Partitioned the drive 200 gig windows 700 gigs mac. It restarts and then i get this error screen, "non-system disk.(see photo below) Press any key to reboot." which of course is unresponsive. I hard reset with the Option held into boot back into mac. I'm using Windows 7 64 bit. Please, any help would be appreciated. I have a unopened copy of Bioshock Infinite waiting for me

The Macs with a built-in Optical drive use the Windows DVD, because that is what BC tells it to be set to. The USB is not made bootable on such machines.
The exceptions to this rule are (from Boot Camp 5.1: Frequently asked questions)
Can I use a downloaded (ISO) version of Windows with Boot Camp?
MacBook Air (Mid 2011 and later), MacBook Pro (Mid 2012 and later, including Retina models), Mac mini (Mid 2011 and later), and iMac (Late 2012) can install downloaded (ISO) versions of Windows 7 and 8.

Late 2012 iMac does't see the thunderbolt ports

late 2012 imac 3.4 i7 v10.8.5 doesn't see the thunderbolt ports in system report. both ports were working previously ( 2 wd mybookTB duos with raid 1 ). now neither port works.
TB port does work with TB to FW adapter. help.

The following article(s) may help you.
AirPlay Mirroring
Troubleshooting AirPlay
Troubleshooting Wi-Fi networks and connections
Recommended Wi-Fi settings
Wifi Diagnostic Software (for Mac users)
You may also find some help on this page, where I’ve collected some of the more unusual solutions to network issues.
Intermittent problems are often a result of interference. Interference can be caused by other networks in the neighbourhood or from household electrical items.
You can download and install iStumbler (NetStumbler for windows users) to help you see which channels are used by neighbouring networks so that you can avoid them, but iStumbler will not see household items.
Refer to your router manual for instructions on changing your wifi channel or adjusting your multicast rate.
There are other types of problems that can affect networks, but this is by far the most common, hence worth mentioning first. Networks that have inherent issues can be seen to work differently with different versions of the same software. You might also try moving the Apple TV away from other electrical equipment.

Late 2012 iMac Trouble. Prohibitory Sign help!

Hi, so I've been trying to partition my drives and install Windows on my late 2012 imac. However I've screwed up. I last adjusted my partitions using disk utility and now receive the prohibitory sign on startup and cannot boot up in safe mode; pram reset; type commands in single user mode. Please help!! Running on Mavericks OS.

Hello ssnacario
Start with booting up to the Recovery HD and then use Disk Utility to verify the hard drive. Check out the first article to go through those steps to sort you out. If for some reason that it checks out and you are still having issues booting up, then you will want to reinstall OS X Mavericks.
Also if you can somehow back up before you go through the troubleshooting to ensure you have a safe copy of your data.
Resolve startup issues and perform disk maintenance with Disk Utility and fsck
http://support.apple.com/kb/ts1417
OS X Mavericks: Reinstall OS X
http://support.apple.com/kb/ph13871
Regards,
-Norm G.

Compatibility Advice please: Mackie Onyx 1620i connect to Late 2012 iMac 10.8.5 Firewire to Thunderbolt

I'd like to buy a Mackie Onyx 1620i Firewire mixer/control surface for my home studio set up. I have a late 2012 iMac 10.8.5 with Thunderbolt connectors but no Firewire. I know that Apple provide a Firewire to Thunderbolt adaptor but looking around online it seems people have had trouble getting these two pieces of kit to work together. I've read all the available info I can find online about running them.. re:correct serial number of the Mackie, the need for any drivers etc.. but doubt still hangs over the issue. Obviously I don't want to spend hundreds of pounds on the wrong piece of equipment. Has anyone successfully run the Mackie Onyx and iMac described?.. or does anyone have sufficient expertise to deliver a definitive answer one way or the other? I'd be most grateful for any help.
Thanks
acolyte3

Based on my experience with the Onyx and two clients of mine who have had nothing but issues with it since day one... ... I cannot recommend it for use with a Mac....
As an example of the type of issue I am referring to.... Mackie released two hardware versions of the Onyx... The first version no longer works with modern versions of OS X.... and modern Macs.. and this can be identified by the serial number of the unit as shown on their Driver information page....
http://www.mackie.com/products/onyxiseries/drivers/
For those with the first version.... Mackie left them 'high and dry' with no solution to their issues other than to buy the newer, second hardware version!
The second version.... again identified by the serial number.... has worked with OS X versions up to 10.8 but only for certain people.. Others have continued to report issues using the latest drivers and 10.8.5... and it does not appear to be supported for any version of OS X higher than 10.8.... which also means it doesn't work reliably with the more modern Macs which require 10.9 as a minimum OS X.
Based on these facts... again, I cannot and will not recommend this product for use with modern Macs and OS X versions.
Note: This is my personal opinion..... and others may have differing opinions depending on their own experiences with the product.

Late 2012 iMac graphics issues with Mavricks

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