Open firmware commands do not work on Mac mini

Open firmware commands do not work on Mac mini. At least on Mac mini 1.83 GHz Intel Core Duo (2 GB RAM and 80 GB HD) with Mac OS X 10.4.8.
Holding:
Option Command OF
when restarting does nothing!
Option: alt key.
Command: Apple key ().
Is this a flaw or am I missing something?
Thanks.

Since there is no Open Firmware, there's no reason to reset the Open Firmware defaults. I would assume that since there's no current interface to reset the EFI defaults, this operation is not necessary. I can't say that for certain. But, just like "zapping the PRAM", which used to help when troubleshooting issues with Mac OS 9, doing it in Mac OS X doesn't change or affect as many settings so it's really not necessary.
-Doug

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External Isight Not Working With Mac Mini

Hello
Thank You for taking the time to look at this for me , I have 2 external isight cameras and i can get neither one to work with my late 2009 mac mini running snow leopard , although they both work on the latest mac mini (running lion) , When connected they open Ichat Av but i cant get a video from them.
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27/10/2012 11:10:33
com.apple.launchd[1]
*** launchd[1] has started up. ***
27/10/2012 11:11:02
com.apple.launchd[1]
(com.parallels.vm.prl_naptd) Unknown key for boolean: SuccessfulExit
27/10/2012 11:11:05
com.apple.WindowServer[79]
Sat Oct 27 11:11:05 Jordan-Bakers-Mac-mini.local WindowServer[79] <Error>: kCGErrorFailure: Set a breakpoint @ CGErrorBreakpoint() to catch errors as they are logged.
27/10/2012 11:11:34
com.parallels.vm.prl_naptd[129]
QKqueueFileSystemWatcherEngine::addPaths: open: No such file or directory
27/10/2012 11:11:34
com.parallels.vm.prl_naptd[129]
QFileSystemWatcher: failed to add paths: /Library/Managed Preferences
27/10/2012 11:11:34
com.apple.launchd.peruser.501[160]
(com.kodak.BonjourAgent) Unknown key for string: Kodak Version
27/10/2012 11:11:34
com.apple.launchd.peruser.501[160]
(com.kodak.BonjourAgent) Unknown key: Kodak Version
27/10/2012 11:11:34
com.apple.launchd.peruser.501[160]
(com.apple.ReportCrash) Falling back to default Mach exception handler. Could not find: com.apple.ReportCrash.Self
27/10/2012 11:11:38
[0x0-0xa00a].SoftwareUpdateCheck[173]
SoftwareUpdateCheck: network unreachable
27/10/2012 11:11:38
com.apple.launchd.peruser.501[160]
([0x0-0xa00a].SoftwareUpdateCheck[173]) Exited with exit code: 3
27/10/2012 11:11:38
com.apple.launchd[1]
(com.apple.suhelperd[175]) Exited with exit code: 2
27/10/2012 11:11:43
com.parallels.vm.prl_pcproxy[190]
QKqueueFileSystemWatcherEngine::addPaths: open: No such file or directory
27/10/2012 11:11:43
com.parallels.vm.prl_pcproxy[190]
QFileSystemWatcher: failed to add paths: /Library/Managed Preferences
27/10/2012 11:11:43
com.apple.launchd.peruser.501[160]
(com.apple.Kerberos.renew.plist[187]) Exited with exit code: 1
27/10/2012 11:11:44
WitnessUserAgent[191]
WitnessUserAgent r304 started for user 501
27/10/2012 11:11:54
WitnessUserAgent[191]
Connected to daemon: <BUDaemonServer: 0x10ea50>
27/10/2012 11:12:26
uclocator[192]
Core Location could not establish your current location
27/10/2012 11:12:26
uclocator[192]
Error Domain=kCLErrorDomain Code=0 "The operation couldn’t be completed. (kCLErrorDomain error 0.)"
27/10/2012 11:12:39
System Preferences[217]
.scriptSuite warning for result type of command 'timedLoad' in suite 'SystemPreferences': the type NSNumber ('long') doesn't match the result Apple event code ('doub').
27/10/2012 11:12:59
com.apple.launchd[1]
(com.apple.xprotectupdater[34]) Exited with exit code: 255
27/10/2012 11:13:11
com.apple.launchd.peruser.501[160]
(com.apple.AirPortBaseStationAgent[189]) Exited: Killed
30/10/2012 16:51:29
com.apple.launchd[1]
*** launchd[1] has started up. ***
30/10/2012 16:51:55
com.apple.launchd[1]
(com.parallels.vm.prl_naptd) Unknown key for boolean: SuccessfulExit
30/10/2012 16:51:56
com.apple.WindowServer[87]
Tue Oct 30 16:51:56 Jordan-Bakers-Mac-mini.local WindowServer[87] <Error>: kCGErrorFailure: Set a breakpoint @ CGErrorBreakpoint() to catch errors as they are logged.
30/10/2012 16:52:00
com.apple.launchd[1]
(com.apple.xprotectupdater[33]) Exited with exit code: 252
30/10/2012 16:52:10
com.parallels.vm.prl_naptd[136]
QKqueueFileSystemWatcherEngine::addPaths: open: No such file or directory
30/10/2012 16:52:10
com.parallels.vm.prl_naptd[136]
QFileSystemWatcher: failed to add paths: /Library/Managed Preferences
30/10/2012 16:52:10
com.apple.launchd.peruser.501[160]
(com.kodak.BonjourAgent) Unknown key for string: Kodak Version
30/10/2012 16:52:10
com.apple.launchd.peruser.501[160]
(com.kodak.BonjourAgent) Unknown key: Kodak Version
30/10/2012 16:52:10
com.apple.launchd.peruser.501[160]
(com.apple.ReportCrash) Falling back to default Mach exception handler. Could not find: com.apple.ReportCrash.Self
30/10/2012 16:53:35
com.parallels.vm.prl_pcproxy[196]
QKqueueFileSystemWatcherEngine::addPaths: open: No such file or directory
30/10/2012 16:53:35
com.parallels.vm.prl_pcproxy[196]
QFileSystemWatcher: failed to add paths: /Library/Managed Preferences
30/10/2012 16:53:36
WitnessUserAgent[197]
WitnessUserAgent r304 started for user 501
30/10/2012 16:53:36
com.apple.launchd.peruser.501[160]
(com.apple.Kerberos.renew.plist[193]) Exited with exit code: 1
30/10/2012 16:53:50
Photo Booth[182]
*** <QCNodeManager | namespace = "com.apple.QuartzComposer" | 391 nodes>: There is already a node registered with name "/userbackdrops"
30/10/2012 16:53:50
Photo Booth[182]
*** <QCNodeManager | namespace = "com.apple.QuartzComposer" | 391 nodes>: There is already a node registered with name "/userbackdrops"
30/10/2012 16:53:52
Photo Booth[182]
*** <QCNodeManager | namespace = "com.apple.QuartzComposer" | 391 nodes>: There is already a node registered with name "/userbackdrops"
30/10/2012 16:53:52
Photo Booth[182]
*** <QCNodeManager | namespace = "com.apple.QuartzComposer" | 391 nodes>: There is already a node registered with name "/userbackdrops"
30/10/2012 16:53:52
Photo Booth[182]
*** <QCNodeManager | namespace = "com.apple.QuartzComposer" | 391 nodes>: There is already a node registered with name "/userbackdrops"
30/10/2012 16:53:53
WitnessUserAgent[197]
Connected to daemon: <BUDaemonServer: 0x401100>
30/10/2012 16:53:54
Photo Booth[182]
*** <QCNodeManager | namespace = "com.apple.QuartzComposer" | 391 nodes>: There is already a node registered with name "/userbackdrops"
30/10/2012 16:53:55
Photo Booth[182]
*** <QCNodeManager | namespace = "com.apple.QuartzComposer" | 391 nodes>: There is already a node registered with name "/userbackdrops"
30/10/2012 16:53:55
Photo Booth[182]
*** <QCNodeManager | namespace = "com.apple.QuartzComposer" | 391 nodes>: There is already a node registered with name "/userbackdrops"
30/10/2012 16:54:25
uclocator[198]
Core Location could not establish your current location
30/10/2012 16:54:25
uclocator[198]
Error Domain=kCLErrorDomain Code=0 "The operation couldn’t be completed. (kCLErrorDomain error 0.)"
30/10/2012 16:55:07
iChatAgent[225]
[Warning] [AIM] Could not change my visibility to 0
30/10/2012 17:01:48
[0x0-0x1c01c].com.skype.skype[258]
WirelessAttach: IOServiceOpen error: e00002c7
30/10/2012 17:01:48
[0x0-0x1c01c].com.skype.skype[258]
WirelessAttach: IOServiceOpen error: e00002c7
30/10/2012 17:01:49
[0x0-0x1c01c].com.skype.skype[258]
WirelessAttach: IOServiceOpen error: e00002c7
30/10/2012 17:01:49
[0x0-0x1c01c].com.skype.skype[258]
WirelessAttach: IOServiceOpen error: e00002c7
30/10/2012 17:04:01
iChat[222]
------ startPreview: previewing: 2
30/10/2012 17:04:23
iChat[222]
------ startPreview: previewing: 2
30/10/2012 20:38:13
com.apple.launchd[1]
*** launchd[1] has started up. ***
30/10/2012 20:38:45
com.apple.launchd[1]
(com.parallels.vm.prl_naptd) Unknown key for boolean: SuccessfulExit
30/10/2012 20:38:48
com.apple.WindowServer[78]
Tue Oct 30 20:38:48 Jordan-Bakers-Mac-mini.local WindowServer[78] <Error>: kCGErrorFailure: Set a breakpoint @ CGErrorBreakpoint() to catch errors as they are logged.
30/10/2012 20:38:48
com.apple.launchd[1]
(com.apple.xprotectupdater[33]) Exited with exit code: 252
30/10/2012 20:39:07
com.parallels.vm.prl_naptd[129]
QKqueueFileSystemWatcherEngine::addPaths: open: No such file or directory
30/10/2012 20:39:07
com.parallels.vm.prl_naptd[129]
QFileSystemWatcher: failed to add paths: /Library/Managed Preferences
30/10/2012 20:39:07
com.apple.launchd.peruser.501[158]
(com.kodak.BonjourAgent) Unknown key for string: Kodak Version
30/10/2012 20:39:07
com.apple.launchd.peruser.501[158]
(com.kodak.BonjourAgent) Unknown key: Kodak Version
30/10/2012 20:39:07
com.apple.launchd.peruser.501[158]
(com.apple.ReportCrash) Falling back to default Mach exception handler. Could not find: com.apple.ReportCrash.Self
30/10/2012 20:39:11
com.parallels.vm.prl_pcproxy[184]
QKqueueFileSystemWatcherEngine::addPaths: open: No such file or directory
30/10/2012 20:39:11
com.parallels.vm.prl_pcproxy[184]
QFileSystemWatcher: failed to add paths: /Library/Managed Preferences
30/10/2012 20:39:11
com.apple.launchd.peruser.501[158]
(com.apple.Kerberos.renew.plist[181]) Exited with exit code: 1
30/10/2012 20:39:11
WitnessUserAgent[185]
WitnessUserAgent r304 started for user 501
30/10/2012 20:40:09
com.apple.launchd[1]
*** launchd[1] has started up. ***
30/10/2012 20:40:35
com.apple.launchd[1]
(com.parallels.vm.prl_naptd) Unknown key for boolean: SuccessfulExit
30/10/2012 20:40:36
com.apple.WindowServer[87]
Tue Oct 30 20:40:36 Jordan-Bakers-Mac-mini.local WindowServer[87] <Error>: kCGErrorFailure: Set a breakpoint @ CGErrorBreakpoint() to catch errors as they are logged.
30/10/2012 20:40:38
com.apple.launchd[1]
(com.apple.xprotectupdater[33]) Exited with exit code: 252
30/10/2012 20:40:49
com.parallels.vm.prl_naptd[128]
QKqueueFileSystemWatcherEngine::addPaths: open: No such file or directory
30/10/2012 20:40:49
com.parallels.vm.prl_naptd[128]
QFileSystemWatcher: failed to add paths: /Library/Managed Preferences
30/10/2012 20:40:49
com.apple.launchd.peruser.501[159]
(com.kodak.BonjourAgent) Unknown key for string: Kodak Version
30/10/2012 20:40:49
com.apple.launchd.peruser.501[159]
(com.kodak.BonjourAgent) Unknown key: Kodak Version
30/10/2012 20:40:49
com.apple.launchd.peruser.501[159]
(com.apple.ReportCrash) Falling back to default Mach exception handler. Could not find: com.apple.ReportCrash.Self
30/10/2012 20:40:50
com.apple.launchd.peruser.501[159]
(com.apple.Kerberos.renew.plist[182]) Exited with exit code: 1
30/10/2012 20:40:50
com.parallels.vm.prl_pcproxy[185]
QKqueueFileSystemWatcherEngine::addPaths: open: No such file or directory
30/10/2012 20:40:50
com.parallels.vm.prl_pcproxy[185]
QFileSystemWatcher: failed to add paths: /Library/Managed Preferences
30/10/2012 20:40:50
WitnessUserAgent[186]
WitnessUserAgent r304 started for user 501
30/10/2012 20:40:52
WitnessUserAgent[186]
Connected to daemon: <BUDaemonServer: 0x10f390>
30/10/2012 20:41:30
uclocator[187]
Core Location could not establish your current location
30/10/2012 20:41:30
uclocator[187]
Error Domain=kCLErrorDomain Code=0 "The operation couldn’t be completed. (kCLErrorDomain error 0.)"
30/10/2012 20:42:21
com.apple.launchd.peruser.501[159]
([0x0-0x11011].com.apple.iChat[209]) Exited: Terminated
30/10/2012 20:44:07
iChatAgent[230]
[Warning] [AIM] Could not change my visibility to 0
30/10/2012 20:44:41
iChat[228]
------ startPreview: previewing: 2
30/10/2012 20:45:26
com.apple.launchd.peruser.501[159]
([0x0-0x18018].com.apple.iChat[228]) Exited: Killed

Handoff not working on mac mini late 2012

This is really annoying me and was wondering if anyone else with a mac mini late 2012 was experiencing the same problems as I am having.
Here is the problem.
I have a mac mini late 2012 and it does not show to my other devices, iPhone 5s, iPad air or my macbook air that I when I am writing out an email that an icon shows in the dock on my macbook air or iPhone that I can 'carry on' or 'handoff' on another device.
However if I repeat this on my iPhone 5s it will show on ALL devices that I can resume on my mac mini or macbook air. The same is for my macbook air where I can carry on.
Mac mini > iphone 5s = not working (this is for all Apple apps)
Macbook air > iPhone 5s, Mac mini, ipad air = works great!
So. my question is why is it working on the other devices apart from my mac mini?
I have taken steps which I searched for online. As in sign out of iCloud on my mac mini. bluetooth disable and then restart and enable it again. I have even taken the drastic action to reformat and start again! Even that won't make it work!
So, is this a bug? I obviously meet the system requirements or I wouldn't be writing this.
Many thanks for any help.

Please read this whole message before doing anything.
This procedure is a test, not a solution. Don’t be disappointed when you find that nothing has changed after you complete it.
Step 1
The purpose of this step is to determine whether the problem is localized to your user account.
Enable guest logins* and log in as Guest. Don't use the Safari-only “Guest User” login created by “Find My Mac.”
While logged in as Guest, you won’t have access to any of your documents or settings. Applications will behave as if you were running them for the first time. Don’t be alarmed by this behavior; it’s normal. If you need any passwords or other personal data in order to complete the test, memorize, print, or write them down before you begin.
Test while logged in as Guest. Same problem?
After testing, log out of the guest account and, in your own account, disable it if you wish. Any files you created in the guest account will be deleted automatically when you log out of it.
*Note: If you’ve activated “Find My Mac” or FileVault, then you can’t enable the Guest account. The “Guest User” login created by “Find My Mac” is not the same. Create a new account in which to test, and delete it, including its home folder, after testing.
Step 2
The purpose of this step is to determine whether the problem is caused by third-party system modifications that load automatically at startup or login, by a peripheral device, by a font conflict, or by corruption of the file system or of certain system caches.
Please take this step regardless of the results of Step 1.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards, if applicable. Start up in safe mode and log in to the account with the problem. You must hold down the shift key twice: once when you turn on the computer, and again when you log in.
Note: If FileVault is enabled in OS X 10.9 or earlier, or if a firmware password is set, or if the startup volume is a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to start up and run than normal, with limited graphics performance, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal startup may also be somewhat slow.
The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Test while in safe mode. Same problem?
After testing, restart as usual (not in safe mode) and verify that you still have the problem. Post the results of Steps 1 and 2.

Lexmark Genesis s815 scaner is not working on mac mini

Hello everybody. Please help if you can!
I recently bought my mac mini and migrated my files and all the data from my previous mac mini, some of the files are comming originally from my old powerbook. I wrote this introduction just because people from lexmark geeek customer support said that this migration and upgrades from Snow Leopard could be an actual and essential problem.
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The image capture comes up withthe device appearing in its left column, but clicking on the device leads to nowhere.
Opening scanner from printer utility in the system preferences comes up with error 9931
Scanning from the device itself gives me communication error on both wifi and usb modes
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Hello everybody. Please help if you can!
I recently bought my mac mini and migrated my files and all the data from my previous mac mini, some of the files are comming originally from my old powerbook. I wrote this introduction just because people from lexmark geeek customer support said that this migration and upgrades from Snow Leopard could be an actual and essential problem.
Now the issue.
I have this new stanning lexmark genesis s815 multifunctional (printer, fax, scanner) device. The scanner does not work. I have updated the driver, the frimware (all available on Lexmark supprot page), downloaded separate scan center application, but nothing works. All the possible ways to scan (from printer utility on the system preferences, from image capture, from the lexmark genesis itself, and from the scan centre application) are not working. The only thing I can do is to scan on email and then download it to my computer.
The scan centre does not open at all
The image capture comes up withthe device appearing in its left column, but clicking on the device leads to nowhere.
Opening scanner from printer utility in the system preferences comes up with error 9931
Scanning from the device itself gives me communication error on both wifi and usb modes
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MBP late 2008 4gb ram 500gb hd + New Mac Mini 2009 Base with 1gb ram
Logic Node installed - settings under audio checked... etc
Node working (slightly) see picture
I had to unplug the edirol keyboard, brother laser printer, fw800 drives, 3 usb hard drives, external alu keyboard griffin powermate and turn off airport to get working.
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[IMG]http://www.musicrowsongs.com/logicnode.jpg[/IMG]
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michael

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[img]http://www.musicrowsongs.com/logicnode2.jpg[/img]
Using a lot of high end waves plugs
mercury v6r7 - perhaps Maserati - API - SSL not going into the node? Why?

Mic not working with MAC Mini on Line in

Hi,
Just got my MAC Mini 3 weeks ago - I've just tried using my audio line-in mic to do a test call with SKYPE and it doesn't work.
I've gone into system preferences and tried to adjust the input volume but it doesn't seem to want to know...
Any advice for this MAC newbie?

Welcome to Apple Discussions!
I would say the fact you get some audio from the mic but not enough for viable use indicates that your present microphone is not outputting a high enough signal. Many elecret condeser type mics, and others with battery power sources output below line level voltages, so the input in the mini would simply not be sensitive enough to register the signal, and you would get exactly the results you describe.
There are microphone preamplifiers you could get to boost the mics signal level, or alternatively, a number of other microphones, including almost all USB devices of this type, which would likely serve your purposes very well.

Usb mike not working with mac mini

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I bought a samson CO1U usb connection mike to use with the mac mini as there is no mike connection. The device is recognised by the computer but apparently not by i-movies or Quicktime Pro 7 as when I bring up the audio screen nothing registers in the sound level and obviously nothing records - am I doing something wrong or missing something out or is this device just not compatible? Apple help were no help!
Hope someone can be of assistance in this matter as I need to record a voiceover on to an animation video.
cheers, shadwell

Hi, thanks for your reply - did that but still no joy.
In utilities / audio midi it says output ( and input ) not supported and in system preferences/sound the input level is registering nothing.I'm going to try the mike on a friend's laptop to see if it is a problem with the mike or the mini mac - or maybe I'm just making some simple mistake in setting it up in Quicktime.Do you know if any usb recording devices actually do work with the mini mac?
thanks, shadwell

DVD Burner not working in Mac Mini

My mac mini (running OSX 10.7.5) all of a sudden stopped burning/reading DVDs, however CD burning and reading still works.
I ran my system's disk utility and corrected some problems and tried again to no avail. I tried a previously burned DVD which did not work either. However, after trying several DVDs, I got the burner to work (or at least it appeared to as it went thru the usual messages of recording my iDVD movie, but when the recording message showed DONE, the screen appeared to freeze there (typically, at this point, I usually get a message that asks if I want to burn another) --I was able to hit cancel to exit the program. Anyways, the DVD did not burn. At this point on the plus side, I can now read my previously burned DVD... so I tried again to burn my iDVD Movie again but it just spits out after 15-30 seconds.
I saw on some boards that I should try cleaning the burner? Do I have to take my system apart to do this? Do I use a cleaning disk? If this is the case, will my DVD acknowledge it if it isn't working? Or do I just spray compressed air into its slot?
Any help would be greatly appreciated as this is for a job that I need to get out.
Thanks so much!

Yes use a CD/DVD cleaning disk
Also see:
How to clean a DVD Superdrive using a credit card !
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Mini DP to HDMI does not work with Mac Mini 2014?

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I just upgraded from a Mac Mini 2011 i5 to a Mac Mini 2014. My old Mini worked fine running 2 displays with an HDMI cable to one monitor and a Mini Displayport to HDMI from the Thunderbolt port to another monitor. I can't seem to get the new 2014 Mini to see the monitor from either the Thunderbolt ports. Is this no longer supported?
Thanks
Ray

Hi there LaureynR,
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Apple Remote not working with Mac Mini

Hi there,
I woke up to quite a strange problem today... My Apple Remote is no longer working with my Mac Mini! I tried all the controls, including launching front row, and the volume controls - but no go...
I even tried it in Windows BootCamp under iTunes, but it still wouldn't work..
I tried pairing it in System preferences, but again, it wouldn't recognise my apple remote when i held down the Menu+fast forward keys for 5 seconds...
The weird thing is, it works fine with my iMac on another floor (out of plain sight from my Mini..), and it isn't paired with the iMac or anything...
Any idea what the problem might be? Thanks in advance!

So you got a dead remote or a dead battery. Call AppleCare and it will be taken care of. What's the big deal? These things happen from time to time.

Apple aluminum keyboard w/o keypad not working with Mac Mini

I'm in the process of reconfiguring our old Mac Mini to run some of our old games that no longer run on the newer Macs. We had a spare Apple aluminum keyboard (without the numeric keypad) which I thought I'd use with the Mini. The alphanumeric keys work fine, but the function keys don't seem to. (In particular, I can't get the volume keys to work.)
I've checked my keyboard settings in System Preferences. Software Update shows everything up-to-date.
The aluminum keyboard WITH the numeric keypad works fine with the Mini. Also the keyboard without the keypad works properly with my Intel iMac.
Does anyone know what's going on?

Hi,
am I right in assuming that you are talking about the Wireless Aluminum Apple keyboard ?
If so, the 2009 version of it requires OSx Leopard 10.5.8 to work properly.
http://support.apple.com/kb/HT1809
The 2007 version of that keyboard requires at least OSX Tiger 10.4.10 plus this keyboard software update http://support.apple.com/kb/HT2394
Maybe downloading and apllying the update can help.
Regards
Stefan

Optical audio output not working on mac mini

I have a brand new mac mini (less than a week old) that I've hooked up to my media center. Unfortunately, when I hook the optical audio output to my Pioneer receiver, I get no sound. I know the receiver decodes optical audio correctly because it does so with my DVD player and my Xbox. I have tried all 4 optical inputs on the receiver, and have tried two different optical cables, as well as 2 different optical adaptors (required by mac mini to go from TOSLINK to the mini TOSLINK output on the mac). This tells me that all signs point to the problem being with the mac audio optical output stage itself. I have called apple technical support and have had it looked at, at an apple store. Unfortunately, the apple store does not carry a device where the audio output could be plugged in to verify that no sound is delivered. Apple refuses to replace the unit because I cannot prove to them that the problem is with the mac mini and not with the pioneer receiver. I find this incredible. My first experience (and quite possibly my last) with a mac has proven to be a nightmare.
Before I contemplate returning the unit and demanding my money back, is there any help anyone can provide....some magic bullet I've overlooked? Has anyone else had this problem?
Thanks....

Thanks for the reply. Yes, when I plug in the optical cable to the mac, it senses it correctly and changes from "Internal Speakers" to "Digital Out" under the sound system preferences. Also, there is definitely red light coming out of the other end of the cable. That only tells me that the "carrier frequency" of light is most probably being generated, but not that the digital audio information is being modulated on top of it.
Any other ideas? Out there?

Open firmware commands do not work on Mac mini

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