Why is there suddenly no audio from my macbook air?

Why is there suddenly no audio on my macbook air?

did you put your Air to sleep with headphones attached, or closed the monitor with phones attached?
Do not sleep your Air (close the monitor with headphones attached) with headphones attached, this is known to affect some Air under Mavericks.
* this occurrence is being looked into.
Much testing on my own and others as well show that, in some instances, this occurs in Mavericks.
If you choose you may contact Apple for an appt and diagnostics.
However as said, refrain from having phones attached when you close the monitor to prevent this until it is resolved
Test this and re-verify
peace

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Why is there no sound coming from my mac air book ?

why is there no sound coming from my mac aribook?

There are many possible causes for this issue. Take each of the following steps that you haven't already tried.
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. If your model has an audio-out (headphone) port, and anything is plugged in, unplug it before putting the system to sleep.
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. If you've installed a software equalizer called "Boom" or anything similar, update or delete it and restart.
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 the Output tab. If the Mute boxes are checked, uncheck them. Move the Volume sliders all the way to the right.
7. If a red light is coming from the audio-out port, 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. Inserting any kind of tool in the port may cause damage that won't be covered by your 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. Reinstall OS X after backing up all data. For a possible shortcut, see this thread.
14. Make a "Genius" appointment at an Apple Store.

Is there Sudden Motion Sensor in last Macbook Air with SSD?

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No there is not.
It's a bit of a shame too, because although the sensor's original purpose is simply to help guard a spinning platter type hard drive, some enterprising programs actually co-opt the sensor to provide positional input. An example would be a game that relies on the tipping of the notebook to control an aspect of gameplay.

No sound from my Macbook Air. When I go to system preferences and click on Sound Output there are no devices to select from and the Mute box is checked.

There is no sound from my Macbook Air even when I turn it on. When I go to System Preferences and click on Output there are no options. The Mute box is also checked, but I cannot uncheck it. Also when I try to play any video from the web, it stops playing after a second or so. I have turned off my computer and turned it on again which did not help.

Try these
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SMC Reset: http://support.apple.com/kb/HT3964

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Why is there no sound coming from my ipod speaker?

Do headphones work?
Do you have volume set to max?
You can try the standard fixes:
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Reset iPod touch: Hold down the On/Off button and the Home button at the same time for at
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- Restore from backup
- Restore to factory defaults/new iPod.
If you still have the problem then it is likely have a hardware problem and an appointment at the Geniu Bar of an Apple store is in order.

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iphoto erased pictures from my macbook air. I have no back-up. Any way to recover them?

A few things to check:
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Are there multiple iPhoto Libraries? (Hold down the option key, while opening iPhoto) Also, check the Trash, I've heard of iPhoto libraries ending up there for some reason.
If you are certain the library you are looking at is the correct one, try the iPhoto Library First Aid options by, quitting iPhoto (if it is open), then, holding down the command and option keys, launch iPhoto. Choose the option to Repair Permissions and click Repair. If that doesn't work, repeat the steps and choose Repair Database. And lastly, if the first two do not solve the problem, try Rebuild Database. *It is very important that you have a backup prior to performing any of the troubleshooting steps.*

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Many thanks for your reply, I found Photomerge.jsx on the iMac, although I couldn't find a Presets/Scripts folder in the Application folder but a search found 4 copies of Photomerge.jsx.
I made a CD of them and inserted it into the MacBook Pro. I dropped a copy into my Applications folder but when I opened Photoshop CS4 and tried to use it - it wasn't available. I then dropped it into Photoshop and it works but when I close everything down and re-open Photoshop it is not there.
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Is there a good way to stream all audio from my Macbook Pro to my Airport Express? Not just simply the iTunes audio.

This does work in general but not for my particular need. I have a Mac G5 using ProTools and a MBox digitizing vinyl (USB connection). I am on a MBP getting work done elsewhere in the house, but want to listen to the music and especially to tell when album side is done. To get music to the MBP, I have plugged the G5's line inputs to the MBox line outputs, then used messenger to create a chat with the MBP. Too bad I could not get the G5's input to be the MBox, but ProTools wants sole control. Works OK, but the messenger output on the MBP will NOT go to the Apple Express, just the speakers or headphone out jack.

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Hi..
Try the troubleshooting steps here > iOS: Troubleshooting Mail

I recently purchased an Onkyo stereo receiver with a wireless USB adapter, UWF-1, and want to stream audio from my MacBook Pro through my stereo system. The receiver tells me it is connected to my wireless LAN, but I cannot get music to play?

New to the community here, thanks for your patience. I recently purchased an Onkyo TX-8050 Network Stereo Receiver with the UWF-1 USB adapter with the intent to stream audio from my MacBook Pro to the stereo. I have gone through the setup instructions for the adapter and the receiver gives me a message saying that it is connected to the password protected network, but that is as far as I can get.
I have gone into iTunes and clicked on the "Open Stream" option, but I just get a pop up box labeled "URL" that is empty. I have Home Sharing turned on and File Sharing turned on, but I am not seeing the receiver in my Finder window or as a iTunes device.
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So I have been searching the iStore for Airplay and I find lots of information about what it is, but nothing about how much it costs, how/where to buy it, etc.?
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Click on the blue Internet Recovery in nbar's post. That is a link to what computers can run Internet Recovery.
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OS X Recovery
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When you reboot, use Setup Assistant to restore your data.

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Why is there suddenly no audio from my macbook air?

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