Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

How can I remove an unknown audio device from my Mac/System Preference?

Hello,

I have been desperately trying to remove an unknown audio device from my Mac/System Preference. And I need your help. Please! if you know how I can get rid of this Unknown audio device, help me. Thank you in advance.

I have a 27" iMac 2010 | OS Version 10.8.4. I attach a photo of my System preference to show what exactly happened here:User uploaded file

iMac, OS X Mountain Lion (10.8.4)

Posted on Aug 22, 2013 6:20 AM

Reply
11 replies

Aug 22, 2013 6:57 AM in response to Topher Kessler

Thanks for your respond,


Yes I tried, I removed all the USB devices and it's still there.

I read an article saying that it could be fixed by making an aggregate device in Audio MIDI. I did that as well, but it did not help. I took two screenshots to show you what I see in my Audio MIDI.


1. When I open the Audio MIDI panel, it is not there.

2. When I go to make an aggregate device,it shows up.


User uploaded file

Aug 22, 2013 9:05 AM in response to Hoborg

Please read this whole message before doing anything.

This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, or by corruption of certain system caches.


Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards. Boot in safe mode and log in to the account with the problem. Note: If FileVault is enabled on some models, or if a firmware password is set, or if the boot volume is a software RAID, you can’t do this. Ask for further instructions.

Safe mode is much slower to boot and run than normal, and some things won’t work at all, including sound output and Wi-Fi on certain iMacs. The next normal boot 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, reboot as usual (i.e., not in safe mode) and verify that you still have the problem. Post the results of the test.

Aug 22, 2013 12:09 PM in response to Hoborg

Please read this whole message before doing anything.

This procedure is a diagnostic test. It won’t solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.

Third-party system modifications are a common cause of usability problems. By a “system modification,” I mean software that affects the operation of other software — potentially for the worse. The following procedure will help identify which such modifications you've installed. Don’t be alarmed by the complexity of these instructions — they’re easy to carry out and won’t change anything on your Mac.


These steps are to be taken while booted in “normal” mode, not in safe mode. If you’re now running in safe mode, reboot as usual before continuing.


Below are instructions to enter some UNIX shell commands. The commands are harmless, but they must be entered exactly as given in order to work. If you have doubts about the safety of the procedure suggested here, search this site for other discussions in which it’s been followed without any report of ill effects.


Some of the commands will line-wrap or scroll in your browser, but each one is really just a single line, all of which must be selected. You can accomplish this easily by triple-clicking anywhere in the line. The whole line will highlight, and you can then copy it. The headings “Step 1” and so on are not part of the commands.


Note: If you have more than one user account, Step 2 must be taken as an administrator. Ordinarily that would be the user created automatically when you booted the system for the first time. The other steps should be taken as the user who has the problem, if different. Most personal Macs have only one user, and in that case this paragraph doesn’t apply.


Launch the Terminal application in any of the following ways:


☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)


☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.


☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.


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 “sh” and press return. You should then get a new line ending in a dollar sign.


Step 1


Triple-click the line of text below on this page to select it:

kextstat -kl | awk '!/com\.apple/{printf "%s %s\n", $6, $7}' | open -ef

Copy the selected text to the Clipboard by pressing the key combination command-C. Then click anywhere in the Terminal window and paste (command-V). A TextEdit window will open with the output of the command. If the command produced no output, the window will be empty. Post the contents of the TextEdit window (not the Terminal window), if any — the text, please, not a screenshot. You can then close the TextEdit window. The title of the window doesn't matter, and you don't need to post that. No typing is involved in this step.

Step 2


Repeat with this line:

{ sudo launchctl list | sed 1d | awk '!/0x|com\.(apple|openssh|vix\.cron)|org\.(amav|apac|cups|isc|ntp|postf|x)/{print $3}'; echo; sudo defaults read com.apple.loginwindow LoginHook; echo; sudo crontab -l; } 2> /dev/null | open -ef

This time you'll be prompted for your login password, which you do have to type. Nothing will be displayed when you type it. Type it carefully and then press return. You may get a one-time warning to be careful. Heed that warning, but don't post it. If you see a message that your username "is not in the sudoers file," then you're not logged in as an administrator.


Note: If you don’t have a login password, you’ll need to set one before taking this step. If that’s not possible, skip to the next step.


Step 3

{ launchctl list | sed 1d | awk '!/0x|com\.apple|org\.(x|openbsd)/{print $3}'; echo; crontab -l 2> /dev/null; } | open -ef

Step 4

ls -A /e*/{cr,la,mach}* {,/}L*/{Ad,Compon,Ex,Fram,In,Keyb,La,Mail/Bu,P*P,Priv,Qu,Scripti,Servi,Spo,Sta}* L*/Fonts .la* 2> /dev/null | open -ef

Important: If you formerly synchronized with a MobileMe account, your me.com email address may appear in the output of the above command. If so, anonymize it before posting.


Step 5

osascript -e 'tell application "System Events" to get name of every login item' | open -ef

Remember, steps 1-5 are all copy-and-paste — no typing, except your password. Also remember to post the output.


You can then quit Terminal.

Aug 22, 2013 12:38 PM in response to Linc Davis

I hope I did it right. The following is the resault:


Text in Text edit from Step 1:


  1. com.razer.common.razerhid (7.21)
  2. com.AmbrosiaSW.AudioSupport (3.2)
  3. com.Avolute.driver.Nahimic (1.00.76)
  4. com.nvidia.CUDA (1.1.0)




Text in Text edit from Step 2:


  1. com.autodesk.backburner_server
  2. com.autodesk.backburner_manager

SSDFanControl

  1. com.oracle.java.Helper-Tool
  2. com.microsoft.office.licensing.helper
  3. com.google.keystone.daemon
  4. com.autodesk.backburner_start
  5. com.ambrosiasw.ambrosiaaudiosupporthelper.daemon
  6. com.adobe.fpsaud





Text in Text edit from Step 3:


  1. com.wacom.wacomtablet
  2. com.razerzone.rzdeviceengine
  3. com.razer.rzupdater
  4. com.oracle.java.Java-Updater
  5. com.nvidia.CUDASoftwareUpdate
  6. com.google.keystone.system.agent
  7. com.adobe.AdobeCreativeCloud
  8. com.spotify.webhelper
  9. com.adobe.ARM.202f4087f2bbde52e3ac2df389f53a4f123223c9cc56a8fd83a6f7ae
  10. com.adobe.AAM.Scheduler-1.0



Text in Text edit from Step 4:



/Library/Components:


/Library/Extensions:


/Library/Frameworks:

  1. AEProfiling.framework
  2. AERegistration.framework
  3. Adlm.framework

Adobe AIR.framework

  1. AudioMixEngine.framework
  2. CUDA.framework
  3. NyxAudioAnalysis.framework
  4. PluginManager.framework
  5. RzAudioSettings.framework
  6. RzSkinToolkit.framework
  7. RzStorageSDK.framework
  8. WacomMultiTouch.framework
  9. iTunesLibrary.framework


/Library/Input Methods:


/Library/Internet Plug-Ins:

  1. AdobeAAMDetect.plugin
  2. AdobePDFViewer.plugin
  3. AdobePDFViewerNPAPI.plugin

Flash Player.plugin

JavaAppletPlugin.plugin

Quartz Composer.webplugin

QuickTime Plugin.plugin

  1. SharePointBrowserPlugin.plugin
  2. SharePointWebKitPlugin.webplugin
  3. WacomNetscape.plugin
  4. WacomTabletPlugin.plugin
  5. flashplayer.xpt
  6. googletalkbrowserplugin.plugin

npgtpo3dautoplugin.plugin

nsIQTScriptablePlugin.xpt

o1dbrowserplugin.plugin


/Library/Keyboard Layouts:


/Library/LaunchAgents:

  1. com.adobe.AAM.Updater-1.0.plist
  2. com.adobe.AdobeCreativeCloud.plist
  3. com.google.keystone.agent.plist
  4. com.nvidia.CUDASoftwareUpdate.plist
  5. com.oracle.java.Java-Updater.plist
  6. com.razer.rzupdater.plist
  7. com.razerzone.rzdeviceengine.plist
  8. com.teamviewer.teamviewer.plist
  9. com.teamviewer.teamviewer_desktop.plist
  10. com.wacom.wacomtablet.plist


/Library/LaunchDaemons:

  1. com.adobe.fpsaud.plist
  2. com.ambrosiasw.ambrosiaaudiosupporthelper.daemon.plist
  3. com.autodesk.backburner_manager.plist
  4. com.autodesk.backburner_server.plist
  5. com.autodesk.backburner_start.plist
  6. com.google.keystone.daemon.plist
  7. com.microsoft.office.licensing.helper.plist
  8. com.oracle.java.Helper-Tool.plist
  9. com.teamviewer.teamviewer_service.plist
  10. net.exirion.ssdfanctrl.plist


/Library/PreferencePanes:

Flash Player.prefPane

HDD Fan Control.prefPane

  1. JavaControlPanel.prefPane
  2. WacomTablet.prefPane


/Library/PrivilegedHelperTools:

com.microsoft.office.licensing.helper


/Library/QuickLook:

  1. iBooksAuthor.qlgenerator
  2. iWork.qlgenerator


/Library/QuickTime:

AppleIntermediateCodec.component

AppleMPEG2Codec.component

MayaIFF.component


/Library/ScriptingAdditions:

Adobe Unit Types.osax


/Library/Spotlight:

Microsoft Office.mdimporter

  1. iBooksAuthor.mdimporter
  2. iWork.mdimporter


/Library/StartupItems:

FanControlDaemon

HDDFanControlDaemon

SSDFanControl


/etc/mach_init.d:


/etc/mach_init_per_login_session.d:


/etc/mach_init_per_user.d:


Library/Address Book Plug-Ins:

  1. SkypeABDialer.bundle
  2. SkypeABSMS.bundle
  3. YMsgrCallABPlugin.bundle
  4. YMsgrMsnABPlugin.bundle
  5. YMsgrSmsABPlugin.bundle
  6. YMsgrYimABPlugin.bundle


Library/Fonts:

Prime Light.otf

Prime Regular.otf

Sofia-Regular.otf


Library/Frameworks:

EWSMac-GC.framework


Library/Input Methods:

.localized


Library/Internet Plug-Ins:

Google Earth Web Plug-in.plugin


Library/Keyboard Layouts:


Library/LaunchAgents:

  1. com.adobe.AAM.Updater-1.0.plist
  2. com.spotify.webhelper.plist


Library/PreferencePanes:




Text in Text edit from Step 5:


iTunesHelper, HDD Fan Control Monitor, Dropbox, Google Chrome

Aug 22, 2013 3:29 PM in response to Hoborg

Any third-party software that doesn't install by drag-and-drop into the Applications folder, and uninstall by drag-and-drop to the Trash, is a system modification.

Whenever you remove system modifications, they must be removed completely, and the only way to do that is to use the uninstallation tool, if any, provided by the developers, or to follow their instructions. If the software has been incompletely removed, you may have to re-download or even reinstall it in order to finish the job.


Here are some general guidelines. Suppose you want to remove something called “BrickYourMac.” First, consult the product's Help menu, if there is one, for instructions. Finding none there, look on the developer's website, say www.brickyourmac.com. (That may not be the actual name of the site; if necessary, search the Web for the product name.) If you don’t find anything on the website or in your search, contact the developer. While you're waiting for a response, download BrickYourMac.dmg and open it. There may be an application in there such as “Uninstall BrickYourMac.” If not, open “BrickYourMac.pkg” and look for an Uninstall button.

You may have to log out or reboot in order to complete an uninstallation.

If you can’t remove software in any other way, you’ll have to erase your boot volume and perform a clean reinstallation of OS X. Never install any third-party software unless you're sure you know how to uninstall it; otherwise you may create problems that are very hard to solve.

Trying to remove complex system modifications by hunting for files by name often will not work and may make the problem worse. The same goes for "utilities" that purport to remove software.

Oct 15, 2013 5:23 PM in response to Linc Davis

Can some utilities such as AppCleaner or AppZapper be the solution here?


In my understanding, if the third-party software does not have an executable under the Application folder and/or does not follow the common naming convention to generate / access the preferences files, then no utility could completely remove the software except the uninstaller script provided by the software vendor.


Am I correct?

Linc Davis wrote:



Any third-party software that doesn't install by drag-and-drop into the Applications folder, and uninstall by drag-and-drop to the Trash, is a system modification.

Whenever you remove system modifications, they must be removed completely, and the only way to do that is to use the uninstallation tool, if any, provided by the developers, or to follow their instructions. If the software has been incompletely removed, you may have to re-download or even reinstall it in order to finish the job.


...

How can I remove an unknown audio device from my Mac/System Preference?

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple ID.