My iMac 27" Late 2012 has Image Persistence Problem

I'm wondering what to do about an annoying image persistence problem on my 27" late 2012 iMac. I got the iMac just a few days ago. Monday actually, so 4 days ago.
It's the 3.4GHz i7, 8GB, NVIDIA 680MX 1TB fusion drive model.
Overall it has become the love of my life, but the image persistence thing is getting harder to ignore. This happens after only a few minutes of use. If I follow Apple's instruction on dealing with LCD image persistence, I can make it go away for a while, but it comes back very quickly.
It is extremely noticeable on a plan dark background. It looks as thought he screen has been left on for a very long time with the same windows open, but it occurrs in less than 5 minutes of use with nothing more intense than a bit of web surfing.
I've read that this is happening a great deal on these new iMacs, particularly teh 27" machines.
While the problem seems to be known to those of us afflicted I don't know if Apple has acknowledged an issue or not.
Here is a sample of the complaints: http://forums.macrumors.com/showthread.php?t=1509571
I can make the ghost image vanish by bringing up an all white scree for a minute or so or using LCD Scrub.
I'm wondering if anyone else has foun a solution other than asking for a replacement computer, which Apple seems to be granting on this issue?

Avoiding image persistence on Apple (IPS) displays
Avoiding image persistence on Apple LCD displays
If you cannot resolve the issue yourself, then return the computer for a replacement. You may do this freely within 14 days from date of purchase, so don't delay.

Similar Messages

Imac 24" late 2007 with image persistence -- any fixes that worked?

So there seem to be quite a few people with screen burn-in/image persistence on their imacs. I am one and I have tried Apple's solution as documented in:
http://support.apple.com/kb/HT2807?viewlocale=en_US
I've tried the white background for a few nights, no go. I also always had screen sleep set to 10 minutes.
The image persistence I get look like left over text/window borders and smudges much like these:
http://www.flickr.com/photos/paulbeattie/3672732489/in/set-72157620740779954/
I have also tried jscreenfix and LCDscruber on various patterns for a few days now and I can't get rid of these artifacts.
I suspect heat may be part of the issue. If I leave the imac off overnight and turn it on in the morning, my screen is fine. Wait a bit for it to warm up and the image persistence is back, however, turning up the fans failed to resolve the issue. Room temp is not bad -- about 26c. I've also tried cleaning out dust, but that didn't change anything.
Has anyone with this problem actually gotten it fixed? What worked?
Message was edited by: taii: Just to add, the location is just about dead center and spreads out roughly 4 inches in any direction. This puts it around the hard disk. The hard disk temp is 58c. The CPU and GPU temps are at 49/63c. The power supply is at 78c. This seems a bit high? The powersupply is in the upper left corner though and there is no image persistence in that area.

Hello
I don't have any exact figures as how much the temps went up as i didn't monitor it that closely before, as everyone who owns a iMac knows they can get quite hot.
Last night when i checked the temp on the GPU was 78 degrees celcius and i belive that thats a good 8-10 degrees more that it normally was with Leopard.
If i try and hold my hand behind the screen to the left where i believe the power unit is located it gets to hot for me to keep my hand there for more than a few seconds at a time.
I don't have the other numbers available right now but i can post them tonight when i get home.
I also had the problem before Snow Leopard but not as bad as with Snow Leopard. When i was using Leopard it normally took quite a long time for the problems to occur. I almost only got them if i wasn't using the computer and the screensaver or power saver for some reason failed to start, it was also quite easily fixed by just activating the screensaver or powersaver for a while.
My conclusion is as follows:
1. The iMacs has probably always had persistance problems.
2. The iMacs gets quite hot
3. After Snow Leopard the Imacs gets even hotter and this affects the percistance problems so that they grow worse
All this accordign to me is clearly related to the hardware itself, i.e poor cooling, poor quality components and so on, nothing points to this being a user or usage problem and i therefor think that apple should address it accordingly.
I'm in Sweden and my nearest Apple Store is quite far away and getting hold of someone at apple in sweden to discuss this matter with is easier said than done.

Windows 7 failing to install through bootcamp on iMac 27" late 2012

Hello.
I have recently received my brand new iMac 27" late 2012, and am trying to get it to install windows 7.
My machine is running 10.8.4 with a 3.4 GHz Intel Core i7, 16 GB DDR3 RAM and 500GB SSD drive.
I launched bootcamp and went through the usual bootcamp standard steps, and after it partitions and restarts, the windows installation stops at the point of choosing a partition.
To elaborate, after the windows setup starts, and I click install windows, it asks me to choose a partition. It happens to be Partition 4 BOOTCAMP (the one that bootcamp supposedly prepared for windows as an NTFS partition.
It does not recognize it as NTFS. I click on advanced options and click format, but it takes a split second and never really formats. The only thing that changes at this point is the name of the Partition (the word BOOTCAMP disappears from the partition name). Another thing I tried after reading full threads for 4 days straight is that I click delete to delete the partition, then on the now unallocated space partition, I click *New to reallocate/format the partition. It also takes no time to turn this into a partition supposedly ready for windows, but it never allows me to choose it and go next to start installation.
I have done this about 8 times now and I am starting to worry about damaging my SSD because of all the partitioning and unpartitioning.
Here are a list of things I have done:
1. made an ISO image of the windows 7 (64 bit of course) and ran that on a USB
2. downloaded the ISO image from the microsoft website and ran that on a USB
3. used an exernal optical drive to run the windows setup using the windows installation DVD instead of the USB ISO image.
I have made sure everything is fully updated, had a friend install windows on his macbookpro retina with an SSD running the same OSX and it worked just fine.
*a small note that may or may not be of importance is that when in the list of partitions in the windows installation I click on Load Driver, it does not detect any drivers although the USB with the drivers that BOOTCAMP created earlier on the Mac side is inserted in the machine and detectable.
What is it that I'm missing?

SOLVED IT!
after 5 full days of research and trial and error (only error and no progress) and after I had hit almost every wall there is, I thought of reviewing all the elements that make up the set up.
1. iMac
2. windows 7 installation (i had both optical drive for the dvd as well as an image on a USB)
3. usb stick with the drivers on it.
the iMac i trust.
windows i doubted. so i went ahead and checked the format of the usb on which i had the drivers. weirdly enough, both were exFat, which is created by windows - supposedly.
I decided to change the format of the USB with the drivers on it to FAT. re-downloaded the drivers on it and restarted... and it worked !
Although it does not make sense at all, but windows was reading from the image on one USB which was exFat, but was not reading the drivers on the other USB.
My guess is that the reason is the Mac OSX was reading the windows through the exFat and that was working, but the windows was not being able to read its own format on the other USB. Typical windows weirdness.
In any case, I hope if someone has the same kind of trouble they would be able to benefit from this post.
Also, maybe its worth noting in the instructions of BOOTCAMP.
Thanks for those who took the time to read it.
b.

Vmware fusion 5.0.2 cannot connect to network on my brand new iMac '27 late 2012

Dear friends,
I have tried to install Windows 8 (x64bit) Pro., Windows XP, and CentOS 6.0 using vmware fusion 5.0.2 over my brand new iMac '27 late 2012. However, neither one can connect to the Internet. There was no problem with the same installation on my iMac 2011.
The network board recognized by Windows 8 is Intel(R) 82574L Gigabit Network Connection.
In the folder of vmware fusion's setting files on Mac OS, I found a file called Windows 8 x64.vmx, and
there is a line as follows.
ethernet0.virtualDev ="e1000e"
Any friend has the same problem or can give me some hints?
Thanks a lot!

Suggest that you post your question here

IMac 27" late 2012 3TB hard drive bad blocks

Hi Guys,
I just received the new iMac 27" late 2012 with 3TB hard drive and as soon as I run Drive Genius version 3.2.2 I saw that the drive has 8 bad blocks.
I tried to deleted the logical volume and reinstall the OS X 10.8.2 and after a scan I got the same 8 bad blocks. I give it another try and erase the entire 3 TB volu except the recovery partition and installed Mountain Lion and after running another Drive Genius SCAN for almost 12 hours I got 8 bad blocks again.
Called Apple Support and they are clueless about what is going on as they are not even aware that the late 2012 iMac 27" is not even in stores yet.
I was told that as long as I do not have errors within the OS X I should not worry about as he HDD is fine. I do not believe it since from my experience when you have a bad block you also have a physical damage on you disk surface.
I called Apple Support again and I was told to go to Genius Bar and have them to replace the HDD to a unit not even a week old. I think that I am going to return the unit, maybe I got a lemon and the unit got dropped during the shipping process or who knows.
I hope that this thread will help other owners to have them to run a check disk or scan disk just to make sure that they do not have a bad hard drive on their new iMac late 2012.
Again I have nothing against to anyone as I just hope that someone from Apple will find this thread and try to prevent this from happening to a large scale.
Thank you.

Colos2012 wrote:
... soon as I run Drive Genius version 3.2.2 I saw that the drive has 8 bad blocks.
Drive Genius will report bad blocks when none are present. It may even be responsible for disk corruption.
See: DriveGenius = Problem
Get rid of Drive Genius. Do not install such junk on a Mac.

RAM Memory for iMac 27' (Late 2012)

Hi,
I have read a lot of discussions about what's the best option to upgrae the RAM for the iMac 27' (Late 2012), but I really don't know what should I buy in terms of compatibility.
Kingston ? Corsair? ,etc...
I pretend to remove the memory that's on my iMac (2x4GB) and install new ones 4X8GB=32GB, so, my question is, which brand should I buy, and also what about the voltage(1.3, 1.5) and latency (CL7, CL9, CL10, CL11...)?
Thank's

If you will go to either OWC (macsales.com) or Crucial, their sites will help you determine what you need.
http://eshop.macsales.com/shop/apple/memory/iMac
Use OWC's instructions to find your model identifyer. Their RAM has been tested and is guaranteed.
I would not recommend cheap brands or Value RAM.

IMac 27" late 2012 + new Apple TV 3: bluetooth disconnections

Hello,
I have an iMac 27" late 2012 working perfectly with wireless keyboard, magic mouse, and wireless trackpad until two days ago, when I purchased the Apple TV.
Since then I have continous disconnections whith Mavericks. Mouse, Keyboard and Pad lost connection and a few seconds later reconnects.
Just this post is impossibly to write, but with patiente....
Just note that when working with Apple TV in standby, with white led off, I have no problems like ever.
If I push any remote button power on Apple TV then automatically Mavericks starts in infinite loop to disconnect (the 3) and connect again.
Then put in stand by Apple TV and then all thing go fine again.
Note that when working with W7 with Bootcamp no errors, no disconnections, anything... All OK.
By this reason I think that the issue is located in OSX Mavericks, not related to the new ecosystem with Apple TV.
Obviously anything isn't going right with Apple TV, but still thinking that it is working OK.
Any idea? how can I check error logs in Mavericks?
The iMac is under Applecare covering, and the Apple TV is new, 2 days old.
Best regards.

Thanks for your fast reply!!!
I think that I have found what was shutting down Bluetooth on iMac.
I installed 2 or 3 weeks ago NotifyR on iMac to get notifies when received in iPhone.
I have opened console at iMac and I have seen that continously was looking for devices and when found Apple TV, with Bluetooth panel opened I saw that shutted down.
First of all I have put in OFF NotifyR. All has become normal. No disconnections of anything and no shutdown in general of Bluetooth.
I have sure at 99,99% that this was the problem. I will have it in quarantine...
I will remove NotifyR waiting for new capabilities of Yosemite!.
Thanks again. I hope that if someone have the same combination will help him.

IMac 27" (Late 2012) Freezing and Crashing

I purchased an ex-demo iMac 27" (Late 2012 - 3.4Ghz, 3TB Fusion Drive, Nvidia 680MX 2GB) that was upgraded to 32GB Ram last July.
Since I've recieved it it has intemittantly locked up, occasionally you get the your computers been restarted screen but mostly it just freezes completely. There's no pattern it can be at the login screen, on the desktop with no software running or when any software I use. There's no particular thing that seems to cause it.
I have run the Apple Hardware Test in Extended Mode Multiple Times and it reports no issues. I've run MemTest Continuosly for 24 hours and it reports no issue.
I've done clean installs of OSX multiple times (both Mavericks and Mountain Lion) and its had no effect. Even with a barebones OSX install it still freezes so I've ruled out software.
I've switched the RAM to rule out memory - still freezes.
I've used both WiFi and and Ethernet to rule out network - still freezes.
I've removed the Fusion Drive Logical Volume and installed OSX to the SSD and then to the HDD to rule out hard disks. This included zeroing the hard drive to ensure there was no bad sectors etc. This didn't make any difference.
I contacted Apple who told me to take it to an Apple Store or Apple Authorized Service Provider. I took it in to my local AASP they've told me they can't find anything wrong - everything works fine for them.
I'm wondering whether the issues are environmental. I've seen a few reports that "Dirty Power" can cause issues, has anyone had any similar experiences that have been solved by a UPS?
Failing that I'm at a loss at what to do. The iMac is unusable as it freezes every few hours.
Anyone have any ideas of what else I could try?
Thanks,
James

1. This procedure is a diagnostic test. It changes nothing, for better or worse, and therefore will not, in itself, solve your problem.
2. If you don't already have a current backup, back up all data before doing anything else. The backup is necessary on general principle, not because of anything in the test procedure. There are ways to back up a computer that isn't fully functional. Ask if you need guidance.
3. Below are instructions to run a UNIX shell script, a type of program. All it does is to gather information about the state of your computer. That information goes nowhere unless you choose to share it on this page. However, you should be cautious about running any kind of program (not just a shell script) at the request of a stranger on a public message board. If you have doubts, search this site for other discussions in which this procedure has been followed without any report of ill effects. If you can't satisfy yourself that the instructions are safe, don't follow them.
Here's a summary of what you need to do: Copy a line of text from this web page into the window of another application. Wait for the script to run. It usually takes a couple of minutes. Then paste the results, which will have been copied automatically, back into a reply on this page. The sequence is: copy, paste, wait, paste again. Details follow.
4. You may have started the computer in "safe" mode. Preferably, these steps should be taken in “normal” mode. If the system is now in safe mode and works well enough in normal mode to run the test, restart as usual. If you can only test in safe mode, do that.
5. If you have more than one user, and the one affected by the problem is not an administrator, then please run the test twice: once while logged in as the affected user, and once as an administrator. The results may be different. The user that is created automatically on a new computer when you start it for the first time is an administrator. If you can't log in as an administrator, test as the affected user. Most personal Macs have only one user, and in that case this section doesn’t apply.
6. The script is a single long line, all of which must be selected. You can accomplish this easily by triple-clicking anywhere in the line. The whole line will highlight, though you may not see all of it in your browser, and you can then copy it. If you try to select the line by dragging across the part you can see, you won't get all of it.
Triple-click anywhere in the line of text below on this page to select it:
PATH=/usr/bin:/bin:/usr/sbin:/sbin; clear; Fb='%s\n\t(%s)\n'; Fm='\n%s:\n\n%s\n'; Fs='\n%s: %s\n'; Fu='user %s%%, system %s%%'; PB="/usr/libexec/PlistBuddy -c Print"; A () { [[ a -eq 0 ]]; }; M () { find -L "$d" -type f | while read f; do file -b "$f" | egrep -q XML\|exec && echo $f; done; }; Pc () { o=`egrep -v '^[[:blank:]]*($|#)' "$2"`; Pm "$1"; }; Pm () { [[ "$o" ]] && o=`sed 's/^ */ /' <<< "$o"` && printf "$Fm" "$1" "$o"; }; Pp () { o=`$PB "$2" | awk -F'= ' \/$3'/{print $2}'`; Pm "$1"; }; Ps () { o=`echo $o`; [[ ! "$o" =~ ^0?$ ]] && printf "$Fs" "$1" "$o"; }; R () { o=; [[ r -eq 0 ]]; }; SP () { system_profiler SP${1}DataType; }; id | grep -qw '80(admin)'; a=$?; A && sudo true; r=$?; t=`date +%s`; clear; { A || echo $'No admin access\n'; A && ! R && echo $'No root access\n'; SP Software | sed '8!d;s/^ *//'; o=`SP Hardware | awk '/Mem/{print $2}'`; o=$((o<4?o:0)); Ps "Memory (GB)"; o=`SP Diagnostics | sed '5,6!d'`; [[ "$o" =~ Pass ]] || Pm "POST"; o=`SP USB | awk '/:$/{d[++n]=$0}; /M.*: /{split($0,a,":"); m[n]=a[2]} END {for (i in m) {if (m[i] !~ /^ Apple/) print d[i] m[i]}}'`; Pm "USB"; o=`pmset -g therm | sed 's/^.*CP/CP/'`; egrep -q 'No th|pms' <<< "$o" && o=; Pm "Thermal conditions"; o=`pmset -g sysload | grep -v :`; grep -q '= [^GO]' <<< "$o" || o=; Pm "System load advisory"; o=`nvram boot-args | awk '{$1=""; print}'`; Ps "boot-args"; d=(/ ""); D=(System User); for i in 0 1; do o=`cd ${d[$i]}L*/L*/Dia* && ls | awk -F_ '!/ag$/{$NF=a[split($NF,a,".")]; print}' | tail`; Pm "${D[$i]} diagnostics"; done; o=`syslog -F bsd -k Sender kernel -k Message CReq 'GPU |hfs: Ru|I/O e|n Cause: -|NVDA\(|pagin|SATA W|ssert|timed? ?o' | tail -n25 | awk '/:/{$4=""; $5=""; print}'`; Pm "Kernel messages"; o=`df -m / | awk 'NR==2 {print $4}'`; o=$((o<5120?o:0)); Ps "Free space (MiB)"; o=$(($(vm_stat | awk '/eo/{sub("\\.",""); print $2}')/256)); o=$((o>=1024?o:0)); Ps "Pageouts (MiB)"; s=( `sar -u 1 10 | sed '$!d'` ); [[ s[4] -lt 85 ]] && o=`printf "$Fu" ${s[1]} ${s[3]}` || o=; Ps "Total CPU usage" && { s=(`ps acrx -o comm,ruid,%cpu | sed '2!d'`); o=${s[2]}%; Ps "CPU usage by process \"$s\" with UID ${s[1]}"; }; s=(`top -R -l1 -n1 -o prt -stats command,uid,prt | sed '$!d'`); s[2]=${s[2]%[+-]}; o=$((s[2]>=25000?s[2]:0)); Ps "Mach ports used by process \"$s\" with UID ${s[1]}"; o=`kextstat -kl | grep -v com\\.apple | cut -c53- | cut -d\< -f1`; Pm "Loaded extrinsic kernel extensions"; R && o=`sudo launchctl list | sed 1d | awk '!/0x|com\.(apple|openssh|vix\.cron)|org\.(amav|apac|calendarse|cups|dove|isc|ntp|post[fg]|x)/{print $3}'`; Pm "Extrinsic system jobs"; o=`launchctl list | sed 1d | awk '!/0x|com\.apple|org\.(x|openbsd)|\.[0-9]+$/{print $3}'`; Pm "Extrinsic agents"; o=`for d in {/,}L*/Lau*; do M; done | grep -v com\.apple\.CSConfig | while read f; do ID=$($PB\ :Label "$f") || ID="No job label"; printf "$Fb" "$f" "$ID"; done`; Pm "launchd items"; o=`for d in /{S*/,}L*/Star*; do M; done`; Pm "Startup items"; o=`find -L /S*/L*/E* {/,}L*/{A*d,Compon,Ex,In,Keyb,Mail,P*P,Qu,Scripti,Servi,Spo}* -type d -name Contents -prune | while read d; do ID=$($PB\ :CFBundleIdentifier "$d/Info.plist") || ID="No bundle ID"; egrep -qv "^com\.apple\.[^x]|Accusys|ArcMSR|ATTO|HDPro|HighPoint|driver\.stex|hp-fax|\.hpio|JMicron|microsoft\.MDI|print|SoftRAID" <<< $ID && printf "$Fb" "${d%/Contents}" "$ID"; done`; Pm "Extrinsic loadable bundles"; o=`find -L /u*/{,*/}lib -type f | while read f; do file -b "$f" | grep -qw shared && ! codesign -v "$f" && echo $f; done`; Pm "Unsigned shared libraries"; o=`launchctl getenv DYLD_INSERT_LIBRARIES`; Pm "Inserted libraries"; o=`find -L {,/u*/lo*}/e*/periodic -type f -mtime -10d`; Pm "Modified periodic scripts"; o=`scutil --proxy | grep Prox`; Pm "Proxies"; o=`scutil --dns | awk '/r\[0\] /{if ($NF !~ /^1(0|72\.(1[6-9]|2[0-9]|3[0-1])|92\.168)\./) print $NF; exit}'`; Ps "DNS"; R && o=`sudo profiles -P | grep : | wc -l`; Ps "Profiles"; for f in fstab sysctl.conf crontab launchd.conf; do Pc $f /etc/$f; done; Pc "hosts" <(grep -v 'host *$' /etc/hosts); Pc "User launchd" ~/.launchd*; R && Pc "Root crontab" <(sudo crontab -l); Pc "User crontab" <(crontab -l); R && o=`sudo defaults read com.apple.loginwindow LoginHook`; Pm "Login hook"; Pp "Global login items" /L*/P*/loginw* Path; Pp "User login items" L*/P*/*loginit* Name; Pp "Safari extensions" L*/Saf*/*/E*.plist Bundle | sed 's/\..*$//;s/-[1-9]$//'; o=`find ~ $TMPDIR.. $ -flags +sappnd,schg,uappnd,uchg -o ! -user $UID -o ! -perm -600 $ | wc -l`; Ps "Restricted user files"; cd; o=`SP Fonts | egrep "Valid: N|Duplicate: Y" | wc -l`; Ps "Font problems"; o=`find L*/{Con,Pref}* -type f ! -size 0 -name *.plist | while read f; do plutil -s "$f" >&- || echo $f; done`; Pm "Bad plists"; d=(Desktop L*/Keyc*); n=(20 7); for i in 0 1; do o=`find "${d[$i]}" -type f -maxdepth 1 | wc -l`; o=$((o<=n[$i]?0:o)); Ps "${d[$i]##*/} file count"; done; o=$((`date +%s`-t)); Ps "Elapsed time (s)"; } 2>/dev/null | pbcopy; exit 2>&-
Copy the selected text to the Clipboard by pressing the key combination command-C.
7. 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.
When you launch Terminal, a text window will open with a line already in it, ending either in a dollar sign ($) or a percent sign (%). If you get the percent sign, enter
exec sh
in the window and press return. You should then get a new line ending in a dollar sign.
Click anywhere in the Terminal window and paste (command-V). The text you pasted should vanish immediately. If it doesn't, press the return key.
If you're logged in as an administrator, you'll be prompted for your login password. Nothing will be displayed when you type it. You will not see the usual dots in place of typed characters. Make sure caps lock is off. Type carefully and then press return. You may get a one-time warning to be careful. If you make three failed attempts to enter the password, the test will run anyway, but it will produce less information. In most cases, the difference is not important. If you don't know your password, or if you prefer not to enter it, just press return three times at the password prompt.
If you're not logged in as an administrator, you won't be prompted for your password. The test will still run. It just won't do anything that takes administrator privileges.
The test may take up to a few minutes to run, depending on how many files you have and the speed of the computer. A computer that's abnormally slow may take longer to run the test. While it's running, there will be nothing in the Terminal window and no indication of progress. Wait for the line "[Process completed]" to appear. If you don't see it within half an hour or so, the test probably won't complete in a reasonable time. In that case, close the Terminal window and report your results. No harm will be done.
8. When the test is complete, quit Terminal. The results will have been copied to the Clipboard automatically. They are not shown in the Terminal window. Please don't copy anything from there. All you have to do is start a reply to this comment and then paste by pressing command-V again.
If any private information, such as your name or email address, appears in the results, anonymize it before posting. Usually that won't be necessary.
When you post the results, you might see the message, "You have included content in your post that is not permitted." It means that the forum software has misidentified something in the post as a violation of the rules. If it happens, please post the test results on Pastebin, then post a link here to the page you created.
Note: This is a public forum, and others may give you advice based on the results of the test. They speak only for themselves, and I don't necessarily agree with them.
Copyright © 2014 Linc Davis. As the sole author of this work, I reserve all rights to it except as provided in the Terms of Use of Apple Support Communities ("ASC"). Readers of ASC may copy it for their own personal use. Neither the whole nor any part may be redistributed.

Graphical artifacts with DX11 (and OGL4) on imac 27" late 2012 GTX 675 MX

Hello, dear community! I have the imac 27" late 2012 with graphical card GTX 675 MX.
In Mac OS X 10.8.5 all works perfect. Software, games (Bioshock Infinity), benchmarks (heaven 4.0). But in windows...
I was installed Windows 8, then 7, then 8 again, and every time after installing nvidia drivers (with BootCamp, or manually downloaded from nvidia site) i have some graphical artifacts ("||" randomly on the screen). On win 7 it was only in games (like Bioshock Infinity or Tomb Raider), on win 8.1 everywhere(on desktop and in games). In DX9 games (like World Of Tanks) all perfect, in DX10/11 games (BI or TR) - artifacts. After thousend of tests i run Heaven Unigine 4.0 with OpenGL(other settings the same) in macos and in windows(on 7 and on 8), for checking some hardware issue if it exists. But on mac os x, as i already said, all is perfect, but on windows - randomly appers artifacts.
I record a video to illustrate my problem. http://www.youtube.com/watch?v=AwEog66vfFk&feature=youtu.be
Help me please! People in service told me that this is not a guarantee issue

I assume you have GPU-Z and other tools to look at gpu. the imac falls between notebooks and desktops when it comes to graphics. and it may be some programs just are not written for that graphic device? possibly?
I've been on Windows 8.1 mostly along with 8.0 and graphic drivers have been "bumpy road" at times and I was able to swap out and use different graphic cards on my PC - had me thinking I had an SSD related issue, then replaced memory (those were bad it turned out, and could have caused drivers and system errors).
Windows has memtest on the DVD and I have seen one or three people with real problems that did not show up until they did more tests, even though Mac OS was blindly oblivious to anything being wrong (it was, they upgraded RAM and SO-DIMM was not fully seated in one case, in another the RAM module had to be replaced).
Extended Tests using Apple Hardware Test is not conclusve and almost never ever when comes to finding gpu or memory 'errors.' There you are better with Windows test utility.

IMac 27in late 2012 Kernel Panic

Everytime I process photos on camera raw using my iMac, it hangs, white screens, then restarts on me. At first it I never had this issue but when it frequented into 3 panics per work day, I reformatted my iMac and installed only photoshop.
I checked on photoshop and turned off the OpenGL thinking maybe it was a RAM issue, but Claire (my iMac) still panics.
Please help. I need to get work done before I start losing money.
iMac 27in Late 2012
OS X 10.8.5
3.4 GHz Intel Core i7
32gb 1600 MHz DDR3
NVIDIA GeFORCE GTX 680MX 2048 MB
Photoshop CS6 13.0.6 (Registered)
Camera Raw 8.3
Everytime a panic is occurs, I send the report to Apple, i dont know if it sends the same report to Adobe.
This is what the panic looks like.
Interval Since Last Panic Report: 28133 sec
Panics Since Last Report:          1
Anonymous UUID:                    B5CF8442-B999-D739-6E61-D5A188A81C88
Sat Jan 18 12:20:41 2014
panic(cpu 0 caller 0xffffff800a467499): "attempt to remove permanent VM map entry " "0xffffff804b492fc0 [0x21000000:0x7fffffe00000]\n"@/SourceCache/xnu/xnu-2050.48.12/osfmk/vm/vm_map. c:4967
Backtrace (CPU 0), Frame : Return Address
0xffffff83b5af3d80 : 0xffffff800a41d636
0xffffff83b5af3df0 : 0xffffff800a467499
0xffffff83b5af3ee0 : 0xffffff800a466d3b
0xffffff83b5af3f00 : 0xffffff800a43598a
0xffffff83b5af3f50 : 0xffffff800a43a2a6
0xffffff83b5af3f70 : 0xffffff800a43a55a
0xffffff83b5af3fb0 : 0xffffff800a4b3257
BSD process name corresponding to current thread: kernel_task
Mac OS version:
12F45
Kernel version:
Darwin Kernel Version 12.5.0: Sun Sep 29 13:33:47 PDT 2013; root:xnu-2050.48.12~1/RELEASE_X86_64
Kernel UUID: EA38B02E-2B88-309F-BA68-1DE29F605DD8
Kernel slide:     0x000000000a200000
Kernel text base: 0xffffff800a400000
System model name: iMac13,2 (Mac-FC02E91DDD3FA6A4)
System uptime in nanoseconds: 7043170686165
last loaded kext at 5368334533424: com.apple.filesystems.msdosfs          1.8.1 (addr 0xffffff7f8c81d000, size 65536)
last unloaded kext at 5515418790260: com.apple.driver.AppleUSBCDC          4.1.23 (addr 0xffffff7f8c7ed000, size 12288)
loaded kexts:
com.apple.iokit.IOBluetoothSerialManager          4.1.7f4
com.apple.driver.AppleHWSensor          1.9.5d0
com.apple.filesystems.autofs          3.0
com.apple.driver.AudioAUUC          1.60
com.apple.driver.AppleMikeyHIDDriver          124
com.apple.driver.ApplePlatformEnabler          2.0.7d2
com.apple.driver.AGPM          100.13.12
com.apple.driver.X86PlatformShim          1.0.0
com.apple.driver.AppleHDA          2.4.7fc4
com.apple.iokit.IOUserEthernet          1.0.0d1
com.apple.driver.AppleUpstreamUserClient          3.5.12
com.apple.driver.AppleIntelHD4000Graphics          8.1.6
com.apple.Dont_Steal_Mac_OS_X          7.0.0
com.apple.GeForce          8.1.6
com.apple.driver.AppleSMCLMU          2.0.3d0
com.apple.driver.ApplePolicyControl          3.4.5
com.apple.driver.AppleMikeyDriver          2.4.7fc4
com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport          4.1.7f4
com.apple.driver.AppleBacklight          170.3.5
com.apple.driver.AppleLPC          1.6.3
com.apple.driver.AppleSMBusPCI          1.0.11d1
com.apple.driver.AppleIntelFramebufferCapri          8.1.6
com.apple.driver.AppleMCCSControl          1.1.11
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless          1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib          1.0.0d1
com.apple.BootCache          34
com.apple.driver.XsanFilter          404
com.apple.iokit.IOAHCIBlockStorage          2.3.5
com.apple.driver.AppleUSBHub          635.4.0
com.apple.driver.AppleSDXC          1.4.3
com.apple.iokit.AppleBCM5701Ethernet          3.6.2b4
com.apple.driver.AirPort.Brcm4331          615.20.17
com.apple.driver.AppleAHCIPort          2.6.6
com.apple.driver.AppleUSBEHCI          621.4.6
com.apple.driver.AppleUSBXHCI          635.4.0
com.apple.driver.AppleACPIButtons          1.8
com.apple.driver.AppleRTC          1.5
com.apple.driver.AppleHPET          1.8
com.apple.driver.AppleSMBIOS          1.9
com.apple.driver.AppleACPIEC          1.8
com.apple.driver.AppleAPIC          1.7
com.apple.driver.AppleIntelCPUPowerManagementClient          214.0.0
com.apple.nke.applicationfirewall          4.0.39
com.apple.security.quarantine          2.1
com.apple.driver.AppleIntelCPUPowerManagement          214.0.0
com.apple.iokit.IOSCSIBlockCommandsDevice          3.5.6
com.apple.iokit.IOUSBMassStorageClass          3.5.2
com.apple.driver.AppleBluetoothHIDKeyboard          170.2.4
com.apple.driver.IOBluetoothHIDDriver          4.1.7f4
com.apple.driver.AppleHIDKeyboard          170.2.4
com.apple.iokit.IOSerialFamily          10.0.6
com.apple.iokit.IOSCSIArchitectureModelFamily          3.5.6
com.apple.kext.triggers          1.0
com.apple.driver.DspFuncLib          2.4.7fc4
com.apple.iokit.IOAudioFamily          1.9.2fc7
com.apple.kext.OSvKernDSPLib          1.12
com.apple.iokit.IOSurface          86.0.4
com.apple.iokit.IOBluetoothFamily          4.1.7f4
com.apple.iokit.IOAcceleratorFamily          74.15
com.apple.nvidia.gk100hal          8.1.6
com.apple.NVDAResman          8.1.6
com.apple.driver.AppleGraphicsControl          3.4.5
com.apple.driver.X86PlatformPlugin          1.0.0
com.apple.driver.AppleThunderboltEDMSink          1.2.0
com.apple.iokit.IOBluetoothHostControllerUSBTransport          4.1.7f4
com.apple.driver.AppleBacklightExpert          1.0.4
com.apple.iokit.IONDRVSupport          2.3.7
com.apple.driver.IOPlatformPluginFamily          5.4.1d13
com.apple.driver.AppleSMC          3.1.5d4
com.apple.driver.AppleHDAController          2.4.7fc4
com.apple.iokit.IOHDAFamily          2.4.7fc4
com.apple.driver.AppleSMBusController          1.0.11d1
com.apple.iokit.IOGraphicsFamily          2.3.7
com.apple.driver.AppleThunderboltDPOutAdapter          2.5.0
com.apple.driver.AppleThunderboltDPInAdapter          2.5.0
com.apple.driver.AppleThunderboltDPAdapterFamily          2.5.0
com.apple.driver.AppleThunderboltPCIDownAdapter          1.3.2
com.apple.iokit.IOUSBHIDDriver          623.4.0
com.apple.driver.AppleUSBMergeNub          621.4.6
com.apple.driver.AppleUSBComposite          621.4.0
com.apple.driver.AppleThunderboltNHI          1.9.2
com.apple.iokit.IOThunderboltFamily          2.7.7
com.apple.iokit.IOEthernetAVBController          1.0.2b1
com.apple.iokit.IO80211Family          530.5
com.apple.iokit.IONetworkingFamily          3.0
com.apple.iokit.IOUSBUserClient          630.4.4
com.apple.iokit.IOAHCIFamily          2.5.1
com.apple.iokit.IOUSBFamily          635.4.0
com.apple.driver.AppleEFINVRAM          2.0
com.apple.driver.AppleEFIRuntime          2.0
com.apple.iokit.IOHIDFamily          1.8.1
com.apple.iokit.IOSMBusFamily          1.1
com.apple.security.sandbox          220.3
com.apple.kext.AppleMatch          1.0.0d1
com.apple.security.TMSafetyNet          7
com.apple.driver.DiskImages          345
com.apple.iokit.IOStorageFamily          1.8
com.apple.driver.AppleKeyStore          28.21
com.apple.driver.AppleACPIPlatform          1.8
com.apple.iokit.IOPCIFamily          2.8
com.apple.iokit.IOACPIFamily          1.4
com.apple.kec.corecrypto          1.0
Model: iMac13,2, BootROM IM131.010A.B05, 4 processors, Intel Core i7, 3.4 GHz, 32 GB, SMC 2.11f14
Graphics: NVIDIA GeForce GTX 680MX, NVIDIA GeForce GTX 680MX, PCIe, 2048 MB
Memory Module: BANK 0/DIMM0, 8 GB, DDR3, 1600 MHz, 0x029E, 0x434D534F384758334D314131363030433131
Memory Module: BANK 1/DIMM0, 8 GB, DDR3, 1600 MHz, 0x029E, 0x434D534F384758334D314131363030433131
Memory Module: BANK 0/DIMM1, 8 GB, DDR3, 1600 MHz, 0x029E, 0x434D534F384758334D314131363030433131
Memory Module: BANK 1/DIMM1, 8 GB, DDR3, 1600 MHz, 0x029E, 0x434D534F384758334D314131363030433131
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0xF4), Broadcom BCM43xx 1.0 (5.106.98.100.17)
Bluetooth: Version 4.1.7f4 12974, 3 service, 21 devices, 3 incoming serial ports
Network Service: Wi-Fi, AirPort, en1
Serial ATA Device: APPLE HDD WDC WD10EALX-408EA0, 1 TB
USB Device: CTH-670, 0x056a (WACOM Co., Ltd.), 0x00df, 0x14300000 / 1
USB Device: hub_device, 0x8087 (Intel Corporation), 0x0024, 0x1a100000 / 2
USB Device: MP280 series, 0x04a9 (Canon Inc.), 0x1746, 0x1a120000 / 4
USB Device: FaceTime HD Camera (Built-in), apple_vendor_id, 0x8511, 0x1a110000 / 3
USB Device: hub_device, 0x8087 (Intel Corporation), 0x0024, 0x1d100000 / 2
USB Device: Cruzer Orbit, 0x0781 (SanDisk Corporation), 0x557c, 0x1d110000 / 8
USB Device: hub_device, 0x0424 (SMSC), 0x2412, 0x1d180000 / 3
USB Device: BRCM20702 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0x1d181000 / 4
USB Device: Bluetooth USB Host Controller, apple_vendor_id, 0x828b, 0x1d181300 / 6
*end*
I have posted the same question in the adobe forum and their support has replied quickly saying:
That kernel panic refers to a bug in the OS code.
Applications cannot cause kernel panics, or machines to shutdown, freeze completely, or restart.
Only OS bugs, low level driver bugs, or hardware faults can do that.
please someone help me.

i upgraded my ram with 4 8gb corsair value system.
could that be the cause?
Very likely - their was a thread on here where someone on here was having the exact same problem with Corsair RAM. If I can find it I'll post a link.
If you still have your original RAM, take out the Corsair and put in the original chips. If the crashes stop - voila!
Macsales and Crucial are the often recommended places to buy from - they guarantee their modules will work.
http://eshop.macsales.com/shop/apple/memory/iMac
http://www.crucial.com
Edit: Here's the link: https://discussions.apple.com/message/24633107#24633107

How do you adjust the bass in the iMac 27" (late 2012) ?

How do you adjust the bass in the iMac 27" (late 2012)?
I am watching Youtube and the bass is very distrubing. Isn't there a way to adjust this on an iMac OSX?

AFAIK, you can't with the internal speakers. Contact Apple's Support, formerly Apple Express Lane, and see what they say.

IMac 27" late 2012 hard to sleep : start using on August it is easy to sleep but just few days ago ,it take half a minute to start sleep .

iMac 27" late 2012 hard to sleep :
- I start use this brand new iMac from August 2013 ,it is easy and quickly to sleep . Just few day ago it takes half a minute to sleep .
At same time the old iMac 20" 2007 got same problem .
Please help me to know what happen.
Thanks to our Apple Support Communities,
Garmin 108

Same problem here - only with a 2012 Macbook Air running 10.8.2
(very accurately described above )
After MBA sleeps and you try to wake it up, screen does not refresh properly and only refreshes where the current mouse cursor is.
If you close the lid, and then re-open the MBA then functions correctly.
I also have an issue where the MBA will suddenly crash while asleep and then will require a hard reset.
Not sure if related though.
I just reset smc/pram - will report back if this does not solve the issue.
If you don't hear from me again, then reseting solved it!

IMac 27" (late 2012) GTX 680 MX, glitch and artifacts on the screen.

Hello.
I have a one year old iMac 27" (Late 2012) i7, 8Gb RAM, GTX 680MX, 1TB Fusion drive. I was working at the computer and was away for two hours. When I woke my iMac from sleep mode on the screen appeared glitch and artifacts.
http://www.youtube.com/watch?v=-666QJQ51Lk&feature=youtu.be
That could happen? This is a GPU problem? Or software?
I am very sad.
It happened a month later after my 1 year warranty expired.

Hi DiMichaelDi,
If you are having issues with display distortion or anomalies on your iMac, you may find the troubleshooting outlined in the following article helpful:
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/ht1573
Regards,
- Brenden

My mac mini late 2012 is having resolution problems?

My mac mini late 2012 is having resolution problems?
Tried resetting PRAM and SMC but still nothing works.
Sometimes is goes back to normal. But then suddenly when I startup or wake up from sleep it changes to resolution 800x600 and stays there..
I'm using my Thunderbolt port with my minidisplay port to vga, because i don't have a HD monitor.
Does anyone have a solution?

Hmmm, not sure on the startup, but on the sleep angle...
Well first...
Bootup holding CMD+r, or the Option/alt key to boot from the Restore partition & use Disk Utility from there to Repair the Disk, then Repair Permissions.
Then maybe...
See if it's related to this...
The 2012 macs (and later apparently) not waking normally from sleep after hours being in sleep. (noted here ...
http://www.xlr8yourmac.com/archives/feb13/022813.html#2012macswontwake
"Why 2012 iMac/2012 Mac Mini won't Wake After Hours of Sleep (Hibernates/Powers Off)")
The sleepimage file still reappears even if never slept. Delete it (hibernate off, etc) - within minutes its back.
A note on that here - http://www.xlr8yourmac.com/feedback/Chameleon_SSD_Optimizer.html
About iMac sleep...
http://forums.macrumors.com/showthread.php?t=1529750
Try this: "sudo pmset autopoweroff 0" and "sudo pmset standby 0"

IMac 27" late 2012 3tb Yosemite BOOTCAMP ISSUES

Hi,
As said in the title, I have a 27" iMac late 2012 with 3tb worth of storage... It is currently running the latest version of Yosemite.
I have been trying to run bootcamp on the iMac for windows 8, however it is not allowing me to install windows...
It Is coming up with an error saying it is unable to partition the hard drive...
I Have tried to create the Partition via disk utility yet still am not able to perforn what I need it to do...
i Would really appreciate any help or ways to run bootcamp...
Thanks,
Josh B

Colos2012 wrote:
... soon as I run Drive Genius version 3.2.2 I saw that the drive has 8 bad blocks.
Drive Genius will report bad blocks when none are present. It may even be responsible for disk corruption.
See: DriveGenius = Problem
Get rid of Drive Genius. Do not install such junk on a Mac.

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