With speakers plugged in, sound first begins on internal speakers...

...and then switches after a second to the external (plugged in) speakers in the headphone port.
I can't tell when this happens. I think it has something to do with whether sound has been used in a while. (does the sound card sleep?)
I've owned many Macs and never experienced this behavior. Once it starts playing out of the external speakers, it stays there and works as expected, but the real problem comes when you are working and there is a short burst of sound like an alert. The sound starts briefly on the laptop speakers and then switches mid sound to the external. Quite weird and quite annoying.
Any suggestions?
UPDATE: I was just watching the iPad keynote, paused, came over to Safari for a minute and came back and experienced the internal-then-external sound. What's up??
Message was edited by: biver

I don't know if this could be your problem, but...
On some systems the BIOS will sometimes disable the on-board audio controller at startup if it doesn't detect anything connected to the inputs or outputs (older HP computers did this to me ).  You usually need to enter the BIOS and permanently enable the On-board Audio by changing the setting from 'Auto Detect' to 'Enabled'.
Hope that helps.

Similar Messages

  • Sound Preferences: switches from Internal Speakers to Digital Out

    I've been having this problem recently. I sent the computer off to Apple a few weeks ago and it helped for a while, but no longer.
    My computer has a problem with it's sound output jack or something. Without inserting anything into the plug, the Sound will change for "Internal Speakers" to "Digital Out" and to "Built-in Output" in the Sound Preferences Panel.
    Any suggestions?
    Message was edited by: davidszcz

    I have a 4 month old macbook and experiencing the same problem. Just realized it after installing itunes 8 and since then having a stuttering audio playback problem too. When i plug my headphones into the audiojack the sound switches from headphones to speakers and back as well as itunes playing tracks in a stop and go mode. I repaired the rights several times, installed quicktime 7.5.5 again, reinstalled itunes 8 and for sure running the latest leopard version 10.5.5.
    Also thought it could be a hardware problem but after reading this it seems more software related.
    Any idea?

  • Help. I have a Google Hangout in 40mins and my sound seems to have vanished. I went to Sys Prefs and it came up with Digital Out....and the Internal Speakers option is no longer there. How do I reboot, or fix this please?

    help. I have a Google Hangout in 40mins and my sound seems to have vanished. I went to Sys Prefs and it came up with Digital Out....and the Internal Speakers option is no longer there. How do I reboot, or fix this please?

    There are many possible causes for this issue. Take each of the following steps that you haven't already tried. Some may not apply to your model. Back up all data before making any changes.
    1. Start with the steps recommended in this support article. Don't skip any of the steps. It's the starting point for further efforts to solve the problem.
    2. Make sure you have a fully up-to-date installation of OS X.
    3. If you've installed an application called "Memory Clean" or any other third-party software that is supposed to "clean" or "purge" memory automatically, remove it according to the developer's instructions and restart. You should do that even if the software is not causing the problem, because it's useless.
    4. Other third-party software that has been reported to interfere with sound output includes "Boom" and "Samsung Kies." If applicable, uninstall according to the developer's instructions (not by dragging something to the Trash.)
    5. If an AirPlay device is selected for sound output from iTunes (or from other applications via third-party software such as "Airfoil"), deselect it.
    6. Launch the application "Audio MIDI Setup" by entering the first few letters of its name in a Spotlight search and selecting it in the results (it should be at the top.) Select Built-in Output from the list on the left. If the Mute boxes are checked, uncheck them.
    7. If a red light is visible in the audio-out port when sound should be playing, the internal switch is stuck in the position for digital output. You may be able to free it by inserting and removing a mini-stereo jack of the proper size. If not, the machine needs to be serviced. Inserting any kind of tool in the port may cause damage that won't be covered by the warranty.
    If there's no red light, the switch may still be stuck in the headphone position. Try to free it the same way.
    8. Disconnect all wired peripherals except keyboard and mouse, if applicable. If more than one display is connected, disconnect all extra ones. Restart and test.
    9. If you have a MacBook Air, turn off Bluetooth and restart.
    10. Start up in safe mode. Don't log in; just restart as usual when the login screen appears. When you do, make sure the words "Safe Boot" do not appear in the login screen. If they do, the system is still in safe mode and sound won't work.
    11. Reset the NVRAM.
    12. Reset the SMC.
    13. Triple-click anywhere in the line below on this page to select it:
    /Library/Preferences/Audio
    Right-click or control-click the highlighted line and select
              Services ▹ Reveal in Finder (or just Reveal)
    from the contextual menu.* A folder should open with an item selected. Move the selected item to the Trash. You may be prompted for your administrator login password. Restart the computer and empty the Trash. Recreate your settings in the Sound preference pane.
    *If you don't see the contextual menu item, copy the selected text to the Clipboard by pressing the key combination  command-C. In the Finder, select
              Go ▹ Go to Folder...
    from the menu bar and paste into the box that opens by pressing command-V. You won't see what you pasted because a line break is included. Press return.
    14. Reinstall OS X after backing up all data.
    15. Make a "Genius" appointment at an Apple Store.

  • I am unable to get any sound out of my internal speakers and no options to use them are available. Plus the mute box is ticked and greyed out and will not untick

    How can I get sound from my internal speakers. I have not set or adjusted any sound levels but all sound is muted and am unable to untick the mute box.  I had sound when I bought the machine but now nothing, not even an option to select internal soeakers in Souns setup!!

    1. Reset PRAM.  http://support.apple.com/kb/PH4405
    2. Reset SMC.     http://support.apple.com/kb/HT3964
        Choose the method for:
        "Resetting SMC on portables with a battery you should not remove on your own".
    3. Applications > Utilities > Audio MIDI Setup
        Audio Devices window
        Side Bar
        Click the Built-in Output.
        Under Mute any of the boxes checked? If so, uncheck it.

  • No metronome sound out of the internal speakers

    Hi everybody,
    there's no metronome sound coming out of the internal speaker of my Mac while playback.
    All settings are fine (play while playback, use internal speakers, "Klopfgeist" switched off) and it worked well with the same settings in Logic Express 7.
    Please help!
    best regards

    yes, its set on All.
    The Klopfgeist sound comes via the Interface with the rest of the sounds, but it should be only on the internal speakers (earohone)
    It's a setup for live-performance (drummer gets the Click via earphones), sound via interface for the audiance

  • Explosive sounds from macbook before internal speakers going out TWICE

    Hey guys,
    So my internal speakers stopped working about a week ago, and a few hours before that my laptop started making weird sounds - it sounded like a mini war was going on inside my computer.. explosive sounds (i know it sounds silly but my friend was there and he heard it too). Then a few hours later, my internal speakers stopped working, AND my headphones wouldn't work either. There is no red light flashing in the headphone jack..
    But a few hours later after restarting and shutting off my computer a few times, the sound came back again! The explosive sounds stopped happening.. until a few days later when i heard the sounds AGAIN. And of course, my internal speakers are dead once again.
    Everything else on my laptop is fine. Nothing is corrupted, my applications are running smoothly. I'm guessing because the sound is out, videos are not playing either. It would load, but it won't play. Same with iTunes. Even if I select a song, it won't play!
    I also ran the hardware test on my laptop twice. Once it's the short version, the second time was the extended version. Both times the results were normal, that there's nothing wrong with my hardware.
    Someone please help me! What else can I try?
    -Steph

    Weirdness, I opened that, but the main volume slider for that is greyed out no matter what I do. It's all weird:
    http://img234.imageshack.us/img234/6693/picture2jb3.png
    Anybody have any idea what's up?

  • Line out and Sound Effects revert to Internal Speakers when I reboot. Any suggestions?

    I have an early 2008 Mac Pro that runs fine under Yosemite. The Sound preference panel worked under Mavericks, but now I must open the Sound panel and manually change the output for both Output and Sound Effects from Internal Speakers to Line Out after a reboot. This is irritating and is becoming more so.
    I've zapped the PRAM with no success.
    Would an AppleScript app on startup work? I can't seem to find any appropriate commands in AppleScript that affect these parameters.
    Any help appreciated.

    The script doesn't seem to work on Yosemite. Trolling around in the library, it appears that "audio" is now "sound," which would explain the file not found.
    Or am I missing something?
    Suggestions?

  • Sound out reverts to internal speakers at every shut down

    Everytime I turn on my Mac Pro I have to go to System Preferences and change the sound to Line out. Every time I shut down the sound out defaults to the internal speakers. is there anyway to stop this?

    Things you can try.
    1. Smc and pram resets.
    2. See if you can get it to "stick" by setting the sound out preference with Audio MIDI Setup (in your Utilitiles folder).
    3. Last resort -- temporarily remove the two plists in /Library/Preferences/Audio.

  • ThinkPad T430s No Sound Through Headphones or Internal Speakers

    My laptop is unable to play sound through both headphones/earphones and its internal speakers. 
    I downloaded and installed the Realtek High Definition Audio Driver from the following site: http://support.lenovo.com/us/en/products/laptops-and-netbooks/thinkpad-t-series-laptops/thinkpad-t43... . 
    As a result, the Device Manager shows that the HD Audio Device is working properly. 
    Also, there is a green check mark over the internal speakers icon and headphones icon (when I plug the headphones into the jack), which was not present before I installed the Realtek Driver. 
    However, there is still an "X" over the audio icon in the taskbar. 
    When I click on the audio icon, the following window appears, stating that the audio device is disabled. 
    I have went through various forums and solutions, but none have been helpful so far. 
    Thank you so much for your time and help for this issue! 

    The Unknown Device seems to have disappeared from my Device Manager when I restarted my laptop. However, the HD Audio Device is still there. 
    My audio stopped working around December 23, 2014. Since then, I have tried to find solutions on various other sites. But, when I search for the System Restore, it only brings up a recent Windows Update. 
    Roll Back for the HD Audio Device is greyed out. 
    Also, after uninstalling the HD Audio Device and rebooting Windows, this dialog appears, mentioning that the Unidentified Device is something that was unplugged, which I think are the headphones. Also, there was a Failed installation for the Audio Device. 
    Thanks so much for helping me look into this problem. 

  • Sound Output reverts to Internal Speakers every time I log in

    Hello all,
    I have a Mac Pro 2,1 and just installed update 10.6.2 and every time I restart or power it up, it will revert sound from Digital Out to Internal Speakers.
    Later I created a new account, logged out and logged back in and sound was also reverted to internal speakers.
    I have another internal hard drive with 10.6.1 and don't have this issue.
    Does anyone know how I can submit a bug-report to Apple?
    Thanks,

    See this thread for some things to try:
    http://discussions.apple.com/message.jspa?messageID=10141072#10141072

  • Sound not recignizing my internal speakers

    Hi: My parents iMac is not recignizing the internal speakers in their Mac. When we try to change the volume, it has a cirlce that is crossed out. Any help would be great
    Thanks

    Except for your keyboard & mouse, disconnect all devices/peripherals from your computer.
    Double check the link MGW listed & make sure the following is your set up:
    Change the Audio Output setting to +_44100.0 Hz_.+
    Trash the com.apple.soundpref.plist document
    Boot from your System Install DVD & run the repair disk/repair permission options.
    After doing the above reset the SMU - http://docs.info.apple.com/article.html?artnum=301733 iMac G5: How to Reset the SMU (iMac G5, the iMac G5 (Ambient Light Sensor), and the iMac G5 (iSight)).
    Say 3 Hail Marys, make an offering to Buddah, Praise Be To Allah, sacrafice your first born & last but not least, kiss your iMac (gotta cover all bases).
    Good luck!

  • My sound on my MacBook Pro laptop only works with headphones.  How do I get the internal speakers to work?

    My sound will only work when I plug in headphones in the jack.  When I take them out, the volume button is on mute.  When I go into the sound preference it says Digital Out for the output.  Sometimes I get a red light when the headphone jack is at.  I have tried blowing in it and have put the jack in and taken it out numerous times to see if it will reset.  Nothing.  Any suggestions on what to do next?

    Go step by step and test.
    1.Plug in and  remove the headphone.
        If you see red light in the headphone port, plug the headphone
        in and out of the port 5 or 6 times to flip the microswitch inside.
        Sound output may be stuck in the digital mode.
    2. Reset PRAM.  http://support.apple.com/kb/PH14222
        Do this twice
    3. Reset SMC.     http://support.apple.com/kb/HT3964
        Choose the method for:     "Resetting SMC on portables with a battery you should not remove on your own".
    Best.

  • Having 2 level of sound volume when using internal speakers or headset

    Hello to everyone.
    I have a HP Probook 4530s which I bought september 2011. I have never had any hardware difficuallty with my system and I'm very happy with it.
    Yesterday, I updated a few of my laptop drivers sush as LAN, Pointing Devices, HP Power Assistant and finaly sound card driver which is an IDT High Definition Audio CODEC all recomended by HP support Assistant Program.
    I tried to test the functionallity of my system after downloading and installing these new updates to see if any of them have any problem. That's when I noticed that my sound experience have been altered. Previously when I was using my system with a pair of headphones and my sound level was for example 70% and when I disconnect the headphones the sound level would suddenly jump to the value that I was using last time without headphones for example 25%.
    As of yesterday after updating the drivers, I can't have that feature.
    Please HELP, and thanks in advanced.

    Hi Shahramb,
    Your ProBook 4530s is a commercial product and to get your issue more exposure I would suggest posting in the commercial forums. Here is a link to the Commercial Notebook forum.
    Thank you,
    Please click “Accept as Solution ” if you feel my post solved your issue.
    Click the “Kudos Thumbs Up" on the right to say “Thanks” for helping!
    Thank you,
    BHK6
    I work on behalf of HP

  • Sound not playing through internal speakers or headphones

    Okay, so I am wanting to listen to audio, but it is not working through my speakers or headphones. Last time that this happened, I know that it had something to do with airplay, since I remember doing something with airplay. I have no idea what is causing this this time, but if you need any additional details, just ask.

    Have you tried a PRAM reset?
    http://support.apple.com/kb/ht1379
    Ciao.

  • Sound 'out' is reset to "Internal speakers" after any restart.

    I'd prefer it would stay assigned to "line out" but this won't happen.  Has anyone experience with this mystery?

    Sound out reverts to internal speakers at every shut down
    Sound output reverting to internal speakers after restart

Maybe you are looking for