Audio and Mini DisplayPort on Late 2009 iMac (27")

I have a Late 2009 27" iMac and a 42" HDTV that I would love to hook up with eachother so I can start using Plex-and-the-likes on the bigger screen.
But I'm wondering if the Mini DisplayPort of this iMac supports audio, as I do not want my sound to come from the other side of the room when watching stuff on the TV.
I've been reading around on the net, but I can't seem to find anything conclusive that tells me that it works (some discussions and thread claim that it should work, but some official documentation regarding the Late 2009 and Mid 2010 iMacs (http://support.apple.com/kb/ht3913) only mentions the Mid 2010 one with audio output in the Mini DisplayPort
Not sure if it matters, but I'm running a fully up-to-date OS X Lion.
Thanks in advance.

According to http://support.apple.com/kb/HT4241, your late 2009 iMac's displayport should support hdmi audio output, (but I have no idea whether there might be OS-X version limitations).
Here are two attractive alternatives to the spendy apple-referenced adapters. I can't vouch for them, but they have great user reviews, and very low-risk pricing. (I just ordered one of each to try with my MBP and new HDTV -- but neither the adapters nor the TV have been delivered yet.)
miniDP-to-hdmi adapter from monoprice.com @ $6.65
miniDP-to-hdmi cable from amazon.com @ $8.67
Another interesting thought would be to skip the miniDP entirely and go with USB-to-hdmi, with an adapter that sounds almost too good to be true. Any comments on this technology (displaylink) would be much appreciated:
USB-to-hdmi adapter from monoprice.com @ $43.12
...shop 'til ya drop,
Looby

Similar Messages

MBP 2009: Audio over Mini DisplayPort

Hello
I previously ordered a Mini DisplayPort -> HDMI cable (http://www.amazon.co.uk/1-8m-DisplayPort-Adapter-Unibody-MacBook/dp/B003WVC8R2/r ef=sr1_fkmr01?ie=UTF8&m=A1T39SA8AUFT6J&qid=1289477962&sr=1-1-fkmr0).
It's been working great with my 2009 model MacBook Pro, however I have to use a separate cable for audio.
When in the Apple Store recently to fix a battery problem on that laptop, I got into a discussion about audio through HDMI on this model. According to the Mac Genius audio through Mini DisplayPort was enabled on older devices through a firmware update (and he said his Mac Mini now uses one cable to do audio and video).
Audio is not working with the cable above - but was I incorrectly informed by Mac Genius, or do I need a different cable that does support audio?
Thanks
Jamie

All we know about your MacBook Pro model is that you've identified it as a "2009 model MacBook Pro." Apple introduced audio-out via mini-displayport in the April 2010 MBP models, so if yours was bought before then, it didn't have that capability when it was new. To the best of my knowledge and belief, nothing that has happened or been released since then has changed that.
[This article|http://support.apple.com/kb/HT4241], updated in June 2010 (after the release of the latest mac Mini), lists the Mac models that supported audio via mini-Displayport at that time:
"iMac (Late 2009), MacBook Pro (Mid 2010), MacBook (Mid 2010), and Mac mini (Mid 2010) supply multichannel audio (up to 8 channels) and video signals over Mini DisplayPort."
I haven't heard of any update that has changed that list since then. If it were possible to enable audio output by means of a firmware update, I think Apple would have made that update available to all owners of mini-Displayport-equipped Macs, not just some of them.

Late 2009 iMac firewire issue

I have tried installing an M Audio project mix on my late 2009 imac and its not recognised, tech support seems to think its the FireWire input on the mac. If I buy a repeater hub, will this work?
I have the correct drivers and firmware yet its not working
Have tried at 400 to 800 cable as well as an adapter with original cable

Hi Tommy,
At the Apple Icon at top left>About this Mac, then click on More Info, then click on Hardware>Firewire, what shows there?
If it says something like no FW detected...
Reset the Firewire bus
If your Firewire or USB isn't recognizing any device. A solution which has worked for some whose hard drive became invisible in 10.4 was simply to follow these four steps to reset the Firewire/USB bus:
1. Shut the machine down.
2. UNPLUG the power lead to the computer and any firewire/USB drive or devices.
3. leave it for 10 minutes.
4. Connect back up and reboot.
http://www.macmaps.com/firewirebug2.html

Frequent and chronic Slowness on Late 2009 21.5" iMac, Issues with Display, Fan, and Booting

Hello,
Sorry for the repost, but I realized after the edit period had passed that I left out a lot of information from my original post, and that I misrepresented my problem in the question heading. Because of this, I am posting again with the updated information.
I am using a 21.5" iMac from Late 2009 with OSX Mavericks 10.9.2. Recently, I have been experiencing several signs of failure/aging during use:
Frequent:
Mail.app slow opening, closing; messages opened in large batches do not get marked as read
Terminal.app experiences noticeable lag when opening (it sometimes takes between 5 and 20 seconds between launching the application and getting an active prompt)
Processes lag or become unresponsive, even when not many applications are running
Browswers frequently become unresponsive, pinwheel, or lag considerably, frequently requiring a force-quit.
Mouse Pinwheels Frequently
Intermittent
Computer generates loudly audible fan noises, persists even when computer is briefly powered off during a reboot; does not always stop after rebooting
Finder often becomes unresponsive
Rare (one time only)
Machine powered on in "Safe Boot" mode for no apparant reason; red text reading "Safe Boot" in menu bar of login screen; background picture slideshow mode became very glitchy, phased and flashed in horizontal grey bars before loading next background image
Chronic (Consistently Happens)
Machine will not boot if plugged into normal powerpoint after being unplugged from that power-point; cable must be plugged into a different A/C power outlet for machine to boot, at which point it can be switched off again, moved back to the original dedicated outlet, and booted again. This has never failed to happen, and is mind-boggling.
I followed some instructions from a similar thread, but I felt that my experiences were sufficiently different that I couldn't troubleshoot from someone else's solution. I would greatly appreciate any technical advice and help that the community can offer.
Specs (Obtained Using EtreCheck) :
Hardware Information:
    iMac (21.5-inch, Late 2009)
    iMac - model: iMac10,1
    1 3.06 GHz Intel Core 2 Duo CPU: 2 cores
    4 GB RAM
Video Information:
    ATI Radeon HD 4670 - VRAM: 256 MB
System Software:
    OS X 10.9.2 (13C64) - Uptime: 0 days 1:3:20
Disk Information:
    Hitachi HDE721010SLA330 disk0 : (1 TB)
        EFI (disk0s1) <not mounted>: 209.7 MB
        Macintosh HD (disk0s2) / [Startup]: 999.35 GB (114.68 GB free)
        Recovery HD (disk0s3) <not mounted>: 650 MB
    PIONEER DVD-RW DVRTS09
USB Information:
    Western Digital My Book 1130 2 TB
        VM (disk2s1) /Volumes/VM: 2 TB (757.31 GB free)
    Apple Inc. Built-in iSight
    Apple Internal Memory Card Reader
    Apple Computer, Inc. IR Receiver
    Apple Inc. BRCM2046 Hub
        Apple Inc. Bluetooth USB Host Controller
FireWire Information:
    WD My Book 111D 800mbit - 800mbit max
        disk1s1 (disk1s1) <not mounted>: 32 KB
        BigD (disk1s3) /Volumes/BigD: 2 TB (134.4 GB free)
Thunderbolt Information:
Configuration files:
    /etc/hosts - Count: 3
Kernel Extensions:
    org.virtualbox.kext.VBoxDrv    (4.2.14)
    org.virtualbox.kext.VBoxUSB    (4.2.14)
Startup Items:
    HP Trap Monitor: Path: /Library/StartupItems/HP Trap Monitor
    rEFItBlesser: Path: /Library/StartupItems/rEFItBlesser
    VirtualBox: Path: /Library/StartupItems/VirtualBox
Launch Daemons:
    [System]    com.adobe.fpsaud.plist 3rd-Party support link
    [System]    com.github.GitHub.GHInstallCLI.plist 3rd-Party support link
    [System]    com.google.keystone.daemon.plist 3rd-Party support link
    [System]    com.oracle.java.Helper-Tool.plist 3rd-Party support link
    [System]    com.ubuntu.one.fsevents.plist 3rd-Party support link
    [System]    org.freedesktop.dbus-system.plist 3rd-Party support link
    [System]    org.macosforge.xquartz.privileged_startx.plist 3rd-Party support link
    [System]    org.macports.rsyncd.plist 3rd-Party support link
Launch Agents:
    [System]    com.google.keystone.agent.plist 3rd-Party support link
    [System]    com.hp.help.tocgenerator.plist 3rd-Party support link
    [System]    com.oracle.java.Java-Updater.plist 3rd-Party support link
    [System]    com.wacom.pentablet.plist 3rd-Party support link
    [System]    org.freedesktop.dbus-session.plist 3rd-Party support link
    [System]    org.macosforge.xquartz.startx.plist 3rd-Party support link
User Launch Agents:
    [not loaded]    com.google.Chrome.framework.plist 3rd-Party support link
    [not loaded]    com.valvesoftware.steamclean.plist 3rd-Party support link
    [not loaded]    org.virtualbox.vboxwebsrv.plist 3rd-Party support link
User Login Items:
    Flux
    Quicksilver
    iTunesHelper
    Air Mouse Server
    Launch_IKCP
    usb16
    Music Manager
    SpeechSynthesisServer
    VMware Fusion Start Menu
    Android File Transfer Agent
Internet Plug-ins:
    FlashPlayer-10.6: Version: 12.0.0.70 - SDK 10.6 3rd-Party support link
    Default Browser: Version: 537 - SDK 10.9
    Flash Player: Version: 12.0.0.70 - SDK 10.6 3rd-Party support link
    QuickTime Plugin: Version: 7.7.3
    o1dbrowserplugin: Version: 5.1.5.17733 3rd-Party support link
    WacomNetscape: Version: 2.1.0-1 - SDK 10.8 3rd-Party support link
    npgtpo3dautoplugin: Version: 0.1.44.29 - SDK 10.5 3rd-Party support link
    googletalkbrowserplugin: Version: 5.1.5.17733 3rd-Party support link
    WacomTabletPlugin: Version: WacomTabletPlugin 2.1.0.2 3rd-Party support link
    JavaAppletPlugin: Version: Java 7 Update 51 3rd-Party support link
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:
    RealPlayer Plugin: Version: Unknown
    Google Earth Web Plug-in: Version: 7.1 3rd-Party support link
3rd Party Preference Panes:
    Flash Player 3rd-Party support link
    Java 3rd-Party support link
    MusicManager 3rd-Party support link
    TeXDistPrefPane 3rd-Party support link
    PenTablet 3rd-Party support link
    DWXBoxHIDPrefsPane 3rd-Party support link
Old Applications:
    None
Time Machine:
    Skip System Files: NO
    Auto backup: YES
    Volumes being backed up:
        Macintosh HD: Disk size: 930.71 GB Disk used: 823.91 GB
    Destinations:
        BigD [Local] (Last used)
        Total size: 2
        Total number of backups: 89
        Oldest backup: 2013-02-19 05:21:21 +0000
        Last backup: 2014-02-27 02:52:20 +0000
        Size of backup disk: Too small
            Backup size 2 < (Disk used 823.91 GB X 3)
    Time Machine details may not be accurate.
    All volumes being backed up may not be listed.
Top Processes by CPU:
        47%    firefox
         3%    WindowServer
         1%    EtreCheck
         0%    com.ubuntu.one.fsevents
         0%    mds
Top Processes by Memory:
    489 MB    firefox
    147 MB    com.apple.IconServicesAgent
    66 MB    Dock
    53 MB    WindowServer
    41 MB    Finder
Virtual Memory Information:
    1.72 GB    Free RAM
    1.42 GB    Active RAM
    335 MB    Inactive RAM
    535 MB    Wired RAM
    683 MB    Page-ins
    564 KB    Page-outs
Results of Linc Davis's diagnostic test from the similar thread:
Boot Mode: Normal
System diagnostics:
   com.ubuntu.one.fsevents 2014-02-25-210509 crash
   com.ubuntu.one.fsevents 2014-02-25-210520 crash
   com.ubuntu.one.fsevents 2014-02-25-210531 crash
   com.ubuntu.one.fsevents 2014-02-25-210541 crash
   com.ubuntu.one.fsevents 2014-02-25-210553 crash
   com.ubuntu.one.fsevents 2014-02-25-210603 crash
   com.ubuntu.one.fsevents 2014-02-25-210618 crash
   com.ubuntu.one.fsevents 2014-02-25-210640-1 crash
   com.ubuntu.one.fsevents 2014-02-25-210640 crash
   diskarbitrationd,HPIO Trap Monitor,mds 2014-02-07-223647 shutdownStall
Kernel messages:
   Feb 23 20:52:38   Previous Shutdown Cause: -128
   Feb 23 21:06:01   PM notification timeout (pid 364, MusicManagerHelp)
   Feb 23 21:44:13   Sound assertion - 1002:aa30 FIFO error (Stream 0)
   Feb 23 21:57:33   PM notification timeout (pid 364, MusicManagerHelp)
   Feb 26 20:29:58   Previous Shutdown Cause: -128
   Feb 26 20:44:56   PM notification timeout (pid 436, MusicManagerHelp)
Loaded extrinsic kernel extensions:
   org.virtualbox.kext.VBoxDrv (4.2.14)
   org.virtualbox.kext.VBoxUSB (4.2.14)
Extrinsic system jobs:
   org.macosforge.xquartz.privileged_startx
   com.ubuntu.one.fsevents
   com.oracle.java.Helper-Tool
   com.google.keystone.daemon
   com.github.GitHub.GHInstallCLI
   com.adobe.fpsaud
Extrinsic agents:
   org.macosforge.xquartz.startx
   com.wacom.pentablet
   com.oracle.java.Java-Updater
   com.hp.help.tocgenerator
   com.google.keystone.system.agent
   com.valvesoftware.steamclean
   com.google.Chrome.framework.service_process/Users/XXXXX/Library/Application_Sup port/Google/Chrome
/Library/LaunchAgents:
   /Library/LaunchAgents/com.google.keystone.agent.plist
   /Library/LaunchAgents/com.hp.help.tocgenerator.plist
   /Library/LaunchAgents/com.wacom.pentablet.plist
   /Library/LaunchAgents/org.macosforge.xquartz.startx.plist
/Library/LaunchDaemons:
   /Library/LaunchDaemons/com.adobe.fpsaud.plist
   /Library/LaunchDaemons/com.github.GitHub.GHInstallCLI.plist
   /Library/LaunchDaemons/com.google.keystone.daemon.plist
   /Library/LaunchDaemons/com.ubuntu.one.fsevents.plist
   /Library/LaunchDaemons/org.macosforge.xquartz.privileged_startx.plist
/Library/PrivilegedHelperTools:
   /Library/PrivilegedHelperTools/com.github.GitHub.GHInstallCLI
   /Library/PrivilegedHelperTools/com.ubuntu.one.fsevents
/Library/StartupItems:
   /Library/StartupItems/HP Trap Monitor/HP Trap Monitor
   /Library/StartupItems/HP Trap Monitor/Resources/English.lproj/Localizable.strings
   /Library/StartupItems/HP Trap Monitor/StartupParameters.plist
   /Library/StartupItems/rEFItBlesser/rEFItBlesser
   /Library/StartupItems/VirtualBox/Resources/English.lproj/Localizable.strings
   /Library/StartupItems/VirtualBox/VirtualBox
Library/LaunchAgents:
   Library/LaunchAgents/com.apple.FolderActions.enabled.plist
   Library/LaunchAgents/com.apple.FolderActions.folders.plist
   Library/LaunchAgents/com.google.Chrome.framework.plist
   Library/LaunchAgents/com.valvesoftware.steamclean.plist
   Library/LaunchAgents/org.virtualbox.vboxwebsrv.plist
Extrinsic loadable bundles:
   /System/Library/Extensions/DWXboxHIDDriver.kext
       (org.walisser.driver.DWXBoxHIDDriver)
   /System/Library/Extensions/Pen Tablet.kext
       (com.wacom.kext.pentablet)
   /System/Library/Extensions/TabletDriverCFPlugin.bundle
       (No bundle ID)
   /Library/Audio/MIDI Drivers/EmagicUSBMIDIDriver.plugin
       (info.emagic.driver.unitor)
   /Library/Extensions/VBoxDrv.kext
       (org.virtualbox.kext.VBoxDrv)
   /Library/Extensions/VBoxNetAdp.kext
       (org.virtualbox.kext.VBoxNetAdp)
   /Library/Extensions/VBoxNetFlt.kext
       (org.virtualbox.kext.VBoxNetFlt)
   /Library/Extensions/VBoxUSB.kext
       (org.virtualbox.kext.VBoxUSB)
   /Library/Internet Plug-Ins/Flash Player.plugin
       (com.macromedia.Flash Player.plugin)
   /Library/Internet Plug-Ins/googletalkbrowserplugin.plugin
       (com.google.googletalkbrowserplugin)
   /Library/Internet Plug-Ins/JavaAppletPlugin.plugin
       (com.oracle.java.JavaAppletPlugin)
   /Library/Internet Plug-Ins/npgtpo3dautoplugin.plugin
       (com.google.o3d)
   /Library/Internet Plug-Ins/o1dbrowserplugin.plugin
       (com.google.o1dbrowserplugin)
   /Library/Internet Plug-Ins/WacomNetscape.plugin
       (com.wacom.tabletplugin)
   /Library/Internet Plug-Ins/WacomTabletPlugin.plugin
       (com.WacomTabletPluginLib.WacomTabletPlugin)
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   Library/Address Book Plug-Ins/SkypeABDialer.bundle
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   Library/Address Book Plug-Ins/SkypeABSMS.bundle
       (com.skype.skypeabsms)
   Library/Internet Plug-Ins/doubleTwistWebPlugin.bundle
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   Library/Internet Plug-Ins/Google Earth Web Plug-in.plugin
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Unsigned shared libraries:
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hosts:
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Global login items:
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Font problems: 8
Bad plists:
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Keychains files: 10
Elapsed time (s): 273

6Kam. wrote:
1: If I hold down option key with my USB plugged in to see my hard drives so I can boot into Windows, boot camp is not there. It does not show up on my Start Up Disk in my Mac, either. Though, I do see it in Finder with nothing in it (I can put stuff into it).
This indicates that your Bootcamp partition is still FAT, which also indicates that the Windows Installer has not been used to reformat it to NTFS yet, as required by Windows Installer. No Windows installation exists yet.
2: If I don't hold down option key with my USB plugged in, it gives me a black screen saying "Non-system disk, press any key to reboot". My keyboard is unresponsive. I have to hard shut down my computer.
The NVRAM in the Mac (as set by Bootcamp Assistant) is telling it to boot from the built-in Optical drive. Is it fully functional and has Windows Installer media in it or broken? Since no drivers have been loaded, the Keyboard/Mouse which are BT/USB, will not function.
From iMac (21.5-inch, Late 2009) - Technical Specifications, it has a built-in Optical drive...
Optical drive
Slot-loading 8x SuperDrive (DVD±R DL/DVD±RW/CD-RW)
Writes DVD+R DL and DVD-R DL discs at up to 4x speed
Writes DVD-R and DVD+R discs at up to 8x speed
Writes DVD-RW discs at up to 6x speed and DVD+RW discs at up to 8x speed
Reads DVDs at up to 8x speed
Writes CD-R discs at up to 24x speed
Writes CD-RW discs at up to 16x speed
Reads CDs at up to 24x speed
3: If I don't hold down option key and it is without my USB plugged in, it gives me a black screen saying "No bootable device -- insert boot disk and press any key". My keyboard is, again, unresponsive. I have to hard shut down my computer.
No bootable media in Optical drive, hence this error.

Late 2009 iMac running Yosemite freezing and won't wake up when Elgato Eye TV starts to record?

As above really, not much more to add.
My husbands late 2009 iMac recently upgraded to Yosemite (latest update installed yesterday) freezes while in sleep mode and has to be 'force shutdown' by holding power button down and then restarted to get it going again. Recording is stopped.
The Elgato Eye TV is a dual tuner with latest update.
Sometimes it wakes the computer up and begins recording, sometimes not.
No key taps or mouse jiggles get it to wake nor a quick press of the power button, I can hear the computer running and have to hold the power button down until all is quiet then fire it back up.
Other times it just doesn't wake the computer at all and start recording. I am all out of things to try, I think he had this problem before but not as badly when the iMac was running Snow Leopard.

Hi Boaz,
I´m facing exactly the same with my Mini which is remotely controlled by a MacBook via Screensharing. Everything works fine unless the Mini goes to sleep. After that I´m not able to wake it up by the MacBook and Wake on LAN (Wol). Even the share is not listed in Finder´s sidebar anymore. It simply doesn´t show up in the share sections anymore. When I log on to my router I can see, that MacMini is not active and I can send WoL package from the router. That brings the Mini back alive, although it still doesn´t show up in the Finder sidebar. When I connect to the Mini via Finder "Connect to share" and type in: vnc://ip-MacMini I can use screensharing again.......
Also I faced the problem with indexed network phantoms....means my Mini was listed in network shares with several different indices e.g. MacMini(2) and (4) and so on..... I wasn´t able to connect and curiously these phantoms show up even when my Mini was shut off! Looks like bonjour or something else is not working properly....
I fixed phantoms by reseting my router (AVM firtzbox), which worked out perfect since yesterday and no indexed phantom is showing up anymore.....
Haven´t fixed the screensharing or waking up thing yet....
I was also taking part in beta testing program and reported these problems to Apple. In Mavericks everything worked really perfect!
Greetz
Sven

Ok here goes nothing i have a late 2009 iMac 27 11.1 intel bought it refurbished and they installed mountain lion 10.8.4 on delivery w/o disks i think ran lion orig. idk & its been all problems 10.8.5 M.L so tried Maverick 10.9 now worse please help me

ok here goes nothing i have a late 2009 iMac 27 11.1 intel bought it refurbished and they installed mountain lion 10.8.4 on delivery w/o disks i think ran lion orig. idk & its been all problems 10.8.5 M.L so tried Maverick 10.9 now worse please help me.....i still have backups of software for mountain lion 10.8 however i need to throw everything on a usb toshiba 1TB external storage for backup, plus from what ive read being i needed to try to go back and update the efi and frimware for my original model but when i found the right one it wont accept it.....and now i just tried to reinstall my mountain lion probably shoud have left in the cloud til i got backed up ...which i now needed to move my previous backed up stuff off the drive to reformat it properly as i read it being toshiba needs to be guid hard drive mac im relatively new to the whole mac thing and im just as ****** off as i was with PC ....lol i just wanna record music and have a steady workflow i do have a new 4s iphone and cloud storage but i believe my computers hacked or got malware or just ****** from incompatiable software ......and keychains not working for admin either PLEASE tell ,me what to do thx .....i will be so grateful im good with recording software and stuff bad with computers programing lol HELP me

Hardware Overview:
Model Name:          iMac
Model Identifier:          iMac11,1
Processor Name:          Intel Core i7
Processor Speed:          2.8 GHz
Number of Processors:          1
Total Number of Cores:          4
L2 Cache (per Core):          256 KB
L3 Cache:          8 MB
Memory:          16 GB
Processor Interconnect Speed:          4.8 GT/s
Boot ROM Version:          IM111.0034.B02
SMC Version (system):          1.54f36
Message was edited by: lnwko

Hi, we are using mac mini's for our developement purpose. connecting the same through using Real VNC. Mac mini's are late 2009 and 2010. Now we have upgraded them to 10.8.5. after upgrading having display issues after launching the simulators

hi, we are using mac mini's for our developement purpose. connecting the same through using Real VNC. Mac mini's are late 2009 and 2010. Now we have upgraded them to 10.8.5. after upgrading having display issues after launching the simulators, we are unable to view the icons we need to move the simulator (into different places) to view the icons.
Also we are having Mac book pro's (Late 2009 & 2010) after upgrading them to 10.8.5. Unable to launch the mac, getting only white screen with apple icon.
Let me know is there any specific Hardware (Graphic Cards) we need to use for the same.
Please provide me the early solutions.
Regards,
Suresh.

Hi, try this 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.

I have a late 2009 iMac. I installed OSX 10.8.4 and want to go back to Snow Leopard. I have a 1.5TB external HD. Are there any issues I need to know about or tips I need to know before doing this? Thanks.

I have a late 2009 iMac. I installed OSX 10.8.4 and want to go back to Snow Leopard. I have a 3TB external HD. Are there any issues I need to know about or tips I need to know before doing this? Thanks.

Downgrade Lion/Mountain Lion to Snow Leopard
1. Boot from your Snow Leopard Installer Disc. After the installer
      loads select your language and click on the Continue
      button. When the menu bar appears select Disk Utility from the
      Utilities menu.
2. After DU loads select your hard drive (this is the entry with the
      mfgr.'s ID and size) from the left side list. Note the SMART status
      of the drive in DU's status area. If it does not say "Verified" then
      the drive is failing or has failed and will need replacing. SMART
      info will not be reported on external drives. Otherwise, click on
      the Partition tab in the DU main window.
3. Under the Volume Scheme heading set the number of partitions
      from the drop down menu to one. Set the format type to Mac OS
      Extended (Journaled.) Click on the Options button, set the
      partition scheme to GUID then click on the OK button. Click on
      the Partition button and wait until the process has completed.
4. Quit DU and return to the installer. Install Snow Leopard.
This will erase the whole drive so be sure to backup your files if you don't have a backup already. If you have performed a TM backup using Lion be aware that you cannot restore from that backup in Snow Leopard (see below.) I suggest you make a separate backup using Carbon Copy Cloner.
If you have Snow Leopard Time Machine backups made while on Snow Leopard, then you may do a full system restore per #14 in Time Machine - Frequently Asked Questions. If you have subsequent backups from Lion, you can restore newer items selectively, via the "Star Wars" display, per #15 there, but be careful; some Snow Leopard apps may not work with the Lion/Mountain Lion files.

HT5634 27 in late 2009 iMac and using bootcamp 4 and windows 8 64 bit I am getting a error message upon startup

I have a 27 in late 2009 iMac and using bootcamp 4 and windows 8 64 bit I am getting a error message upon startup. Any way to fix it?

Windows 8 is not supported on your computer.
http://support.apple.com/kb/HT5634

My late 2009 iMac 27 inch hard drive just failed and is being replaced. It did not qualify for call back but I am wondering if there is others with similar issue

As I stated my late 2009 iMac 27 inch hard drive failed and is being replaced.. I am being charged as machine does not qualify for the call back program..call backs are on 2011 machines.. However i am in shock that my segate internal iMac hard drive failed in less than two years.. are there others with similar issue? Also when I get machine back will new hard drive be stable .. How do I make sure my working environment is reliable.. I have all my data and work backed up and will be able to rebuild my system but I really do not want to have to go through this down the line again.

Just to update everyone and maybe help people down the road .... It has been a week of **** .... I may have finally solved a problem that I have seen a ton of people in all different types of discussions around the world having trouble with ...... I am going to upload some pictures of what I was getting in the beginning and it came out of no where .... I had the random pixel problem with my display and to make a long story short I came across an article two days ago regarding internal temperatures and fan speed ...... I kept reading about apples approach which is not the point ..... More importantly I dug deeper into temperature control and fan settings .... I discovered all kinds of software and there is only one in my eyes that can help anyone dealing with this display problem .... I will be honest, I do not have the money right now for anything extra and am barely getting by and that is why I kept at it ... I figured keep trying different things because a repair is out of the question ... http://www.crystalidea.com/macs-fan-control - This program has solved my problem - I get to adjust three internal temperatures inside my Imac and slowly but surely as the temperatures remained constant the display is fine .... Like new again .... I cant believe it ..... Turns out the ATI Radeon HD 4850 512 MB graphics card gets very hot causing it to not do what it is supposed to ..... Anyone that has any questions do not hesitate to contact me ...... I am going to upload some pics .... They are not that clear but if you are going through this you will recognize the images for sure - There was so many more variations but this should help out - Thanks to everyone that takes the time out to help people on this support site .... I want to send a shout out to The Art Of Sound .... He is the most knowledgeable Apple person I have ever come across and I am an Apple user for 20+ years
a to

Late 2009 imac 27, bluetooth keyboard pressing fn f11 volume down not working and automattically go to mute

Hi all,
having problem last few days with my late 2009 imac 27, my wireless keyboard volume down not working when i pressing, up is working (f12). but when i press down (f11) after few pressing it will go all the way to mute.
but the stranged is after awile ( if i have pressed up) it will go down all the way to mute as i didn't press anything. and if i leave it for awile my mute icon still show it on display and will not turn on my screensaver / sleepmode.
have osx 10.8.3 newest version. mountain lion.
please help.

i had the same problem like you did
i wanna ask you something.How can i dod reset PRAM?
Because when i restart my imac,the keyboard is shutting down.then it takes a time to reconnect again to imac.
that time the screen appear in log in view
help me out please

I have a late 2009 imac i am having issues with my screen flickering and getting dark

i have a late 2009 imac 21 inch i am having problems with my screen flickering ND GETTING DARK DOES THIS MEAN THAT MY COMPUTER IA FAILING

I have partly the same problem (Sceen blackening) sparodically.
2010 iMAC with I7 CPU and ATI Radeon HD 4850 512 MB Graphics.
If I lower the brightness to around (3 or sometimes 4 of the on screen squares F2) the issue does not happen at all. I prefer a bright screen.
The issue commenced immediately after instaalling OS X 10.8.2 update one year ago.
The current software is OS X 10.9 (13A603)
The graphics on this computer are always first rate when working properly even at maximum brightness
There are particular days and times when the problem routinely occurs.
Some of my neighbors with iMacs have similar problems.
I live adjacent to the City of London in an area where new building seems to be developing faster than the various utilities and there are known Power Network issues. Professional surge supressors make no difference.
I live in a large property with four independent ring mais. The issue is present on all four rings. I have yet to take the computer elsewhere to possibly eliminate power issues from the problem.
I am reluctant to replace an otherwise fine top of range iMac which otherwise serves me well since the same problems might be present.

Mavericks and late-2009 iMac

Has anyone noticed issues running Mavericks with a late 2009 iMac? I see slow performance occasionally, even though I'm not really doing much (Safari, mail, maybe an Excel spreadsheet). My iMac has 4G memory, 3GHz dual core CPU; memory pressure is amber and memory used is 3.98G, VM 12.1G, swap used 1.81G. I'm thinking we've just hit the memory ceiling and it's time to cough up the bucks to bring it to 16G, but I wanted to reach out to the community first, get a feel for how others are finding Mavericks works on their older equipment, before I put a couple hundred bucks into a 4 year old computer.

What you do in the interim is try a Safe Mode boot.
Uninstalling Software: The Basics
Most OS X applications are completely self-contained "packages" that can be uninstalled by simply dragging the application to the Trash. Applications may create preference files that are stored in the /Home/Library/Preferences/ folder. Although they do nothing once you delete the associated application, they do take up some disk space. If you want you can look for them in the above location and delete them, too.
Some applications may install an uninstaller program that can be used to remove the application. In some cases the uninstaller may be part of the application's installer, and is invoked by clicking on a Customize button that will appear during the install process.
Some applications may install components in the /Home/Library/Applications Support/ folder. You can also check there to see if the application has created a folder. You can also delete the folder that's in the Applications Support folder. Again, they don't do anything but take up disk space once the application is trashed.
Some applications may install a startupitem or a Log In item. Startupitems are usually installed in the /Library/StartupItems/ folder and less often in the /Home/Library/StartupItems/ folder. Log In Items are set in the Accounts preferences. Open System Preferences, click on the Accounts icon, then click on the LogIn Items tab. Locate the item in the list for the application you want to remove and click on the "-" button to delete it from the list.
Some software use startup daemons or agents that are a new feature of the OS. Look for them in /Library/LaunchAgents/ and /Library/LaunchDaemons/ or in /Home/Library/LaunchAgents/.
If an application installs any other files the best way to track them down is to do a Finder search using the application name or the developer name as the search term. Unfortunately Spotlight will not look in certain folders by default. You can modify Spotlight's behavior or use a third-party search utility, EasyFind, instead.
Some applications install a receipt in the /Library/Receipts/ folder. Usually with the same name as the program or the developer. The item generally has a ".pkg" extension. Be sure you also delete this item as some programs use it to determine if it's already installed.
There are many utilities that can uninstall applications. Here is a selection:
    1. AppZapper 2.0.1
    2. AppDelete 3.2.6
    3. Automaton 1.50
    4. Hazel
    5. AppCleaner 2.1.0
    6. CleanApp
    7. iTrash 1.8.2
    8. Amnesia
    9. Uninstaller 1.15.1
10. Spring Cleaning 11.0.1
For more information visit The XLab FAQs and read the FAQ on removing software.

Late 2009 iMac 27" as display for gaming desktop?

I'm looking at buying a gaming desktop with a high end graphics card. I know that the late 2009 imac can use the "mini-displayport" to be used as a monitor for the pc, but the graphics card on my desktop will only have a "displayport." The card comes with a DisplayPort to Mini-DisplayPort cable, which would allow them to connect, but will it be compatible for Target Display mode? Some people have reported success online, but i could be missing information.

Hello CDeuschel,
Thanks for using Apple Support Communities.
For more information on this, take a look at:
Target Display Mode: Frequently Asked Questions (FAQ)
http://support.apple.com/kb/ht3924
Can I use the iMac in TDM as a display for my gaming console, DVD player, or other device?
The Mini DisplayPort port on a supported iMac can receive DisplayPort compliant video and audio signals. Converters not made by Apple may provide options to convert other electrical, video, and audio protocols to Mini DisplayPort or Thunderbolt compliant signals.
Best of luck,
Mario

Late 2009 imac as second monitor

Hello, I just purchased a new iMac retina 27 inch. I am trying to use my late 2009 iMac 27 inch as a second display using a mini display port. I can get it to work my old cheap second monitor, but when I try the 2009 mac, and I press command F2, it shows the options to set up as a second monitor on the new retina mac but then after a few seconds the options disappear and they go back to being separate monitors. Just wondering if anyone has been able to make this work as I'd hate to have to sell my 2009 mac. Thanks in advance.

You're starting in Target Disk Mode not Target Display Mode. Follow these instructions:
Make sure both computers are turned on and awake. (This is where you're going wrong)
Connect a male-to-male Mini DisplayPort or ThunderBolt cable to each computer.
Press Command-F2 on the keyboard of the iMac being used as a display to enable TDM.
Note: In Keyboard System Preferences, if the checkbox is enabled for "Use all F1, F2, etc. keys as standard functions keys," the key combination changes to Command-Fn-F2.

Audio and Mini DisplayPort on Late 2009 iMac (27")

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