No sound after OSX 10.6.8 upgrade

Go step by step and test.
1. System Preference > Sound > Output > Internal Speakers
    Highlight Internal Speakers / Headphones
    Make sure that Mute is not enabled.
2.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.
3. Reset PRAM. http://support.apple.com/kb/PH4405
4. 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".
5. 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.

Similar Messages

Macbookpro does not connect to wireless after osx 10.7.4 upgrade

My MBP has stopped recognising my wireless connections post THE OSX 10.7.4 upgrade. It detects the modem and asks for password, but Does not accept, nor connect.
But strangely enough, if I sit next to the modem, the Mbp connects easily.
My other Apple products connect to the same modem without issue.
Have tried all basic checks both with the modem and also the mbp...but no Solutions so far.
Anyone else with à similar issue?...Amy help Will be welkome
Regards
M

This is only the site for Toshiba USA, so I don't have any information on your model. If you were using a US unit, I would recommend this article:
Troubleshooting Wi-Fi (Wireless) Problems
You may want to check the Toshiba Europe forums.
- Peter

No sound after OSX 10.7.4 update

Hi,
I'm using the MBP 17" (2011) model.
Everything works fine until I updated to OSX 10.7.4
I had read several comments about this issue, but still could not solve it.
Detail:
1. The volume logo turned to gray, and it was locked
2. In symtem sound preferences, it stated that "No output devices found" as well as "No input devices found"
3. There is no red light out from my AUDIO input as for many other does.
4. I had tried PRAM resetting for several times, but still does not works.
5. I had tried deleting com.apple.BezelServ...... as what suggested by some people, but does not work also.
6. The disk utility first aid does not solve the issue.
I ever had this problem with my old MB 13" while I'm watching movie.
It had been solved by PRAM resetting, but this time the PRAM resetting could not solve the problem for my MBP 17".
Thanks in advance for those who are going to help

Wow things are getting bad. I have the same problem after updating to 10.7.4
The control icon is greyed out and there is nothing in the 'sound preferences' that allows this to be remedied.
Some of the solutions here are draconian (I should not have to reinstall to fix this, Steve Jobs would be turning in his grave) and Apple should be rightly ashamed that such a essential feature has gone to ground in the latest update.
Sane solutions appreciated. I can't record, I can't playback existing music, iTunes is useless, I'm not keen on silent movies, can't use Acrobat Connect.......the list goes on.

IMac - gray screen after OSX 10.9.4 upgrade

iMAC
21.5-inch, Late 2009
Processor 3.33 GHz Intel Core 2 Duo
Memory 16 GB 1067 MHz DDR3
Graphics ATI Radeon HD 4670 256 MB
Software OS X 10.9.4 (13E28)
After being gone for 2 weeks we returned home and initially the iMAC booted fine and my wife was able to use it with no issues. Then she called later in the day reporting that she could no longer log into the machine despite trying to restart and then powering off/on. I had auto updates turned on so my guess is that the update to 10.9.4 happened but failed to complete.
I rebooted using the recovery disc, ran the check disk utility and there were some issues with permissions on some of the printer related files. After the utility corrected those I attempted to reboot again. Still ended up with the gray screen.
I installed OSX again, received no error messages, but still gray screen again. Rebooted in safe mode, checked the disks again and no issues. I followed all the steps to in the knowledge base article to check peripherals (none connected), clear memory, reinstall, etc. Getting the machine back in working mode required erasing the main drive and reinstalling OS X again. Since I have a cloud backup of my data, I was able to do that without serious data loss. It seems there was some issue with the update conflicting with some data that existed on the drive. Don't know where that would have been logged and not enough time available for me to scour the support site to track it down. This is mainly an FYI that the 10.9.4 updater may have issues and it took some drastic measures on my part to get my machine working again.

Take each of these steps that you haven't already tried. Stop when the problem is resolved.
Step 1
The first step in dealing with a startup failure is to secure the data. If you want to preserve the contents of the startup drive, and you don't already have at least one current backup, you must try to back up now, before you do anything else. It may or may not be possible. If you don't care about the data that has changed since the last backup, you can skip this step.
There are several ways to back up a Mac that is unable to start. You need an external hard drive to hold the backup data.
a. Start up from the Recovery partition, or from a local Time Machine backup volume (option key at startup.) When the OS X Utilities screen appears, launch Disk Utility and follow the instructions in this support article, under “Instructions for backing up to an external hard disk via Disk Utility.” The article refers to starting up from a DVD, but the procedure in Recovery mode is the same. You don't need a DVD if you're running OS X 10.7 or later.
b. If Step 1a fails because of disk errors, and no other Mac is available, then you may be able to salvage some of your files by copying them in the Finder. If you already have an external drive with OS X installed, start up from it. Otherwise, if you have Internet access, follow the instructions on this page to prepare the external drive and install OS X on it. You'll use the Recovery installer, rather than downloading it from the App Store.
c. If you have access to a working Mac, and both it and the non-working Mac have FireWire or Thunderbolt ports, start the non-working Mac in target disk mode. Use the working Mac to copy the data to another drive. This technique won't work with USB, Ethernet, Wi-Fi, or Bluetooth.
d. If the internal drive of the non-working Mac is user-replaceable, remove it and mount it in an external enclosure or drive dock. Use another Mac to copy the data.
Step 2
If the startup process stops at a blank gray screen with no Apple logo or spinning "daisy wheel," then the startup volume may be full. If you had previously seen warnings of low disk space, this is almost certainly the case. You might be able to start up in safe mode even though you can't start up normally. Otherwise, start up from an external drive, or else use the technique in Step 1b, 1c, or 1d to mount the internal drive and delete some files. According to Apple documentation, you need at least 9 GB of available space on the startup volume (as shown in the Finder Info window) for normal operation.
Step 3
Sometimes a startup failure can be resolved by resetting the NVRAM.
Step 4
If you use a wireless keyboard, trackpad, or mouse, replace or recharge the batteries. The battery level shown in the Bluetooth menu item may not be accurate.
Step 5
If there's a built-in optical drive, a disc may be stuck in it. Follow these instructions to eject it.
Step 6
Press and hold the power button until the power shuts off. Disconnect all wired peripherals except those needed to start up, and remove all aftermarket expansion cards. Use a different keyboard and/or mouse, if those devices are wired. If you can start up now, one of the devices you disconnected, or a combination of them, is causing the problem. Finding out which one is a process of elimination.
Step 7
If you've started from an external storage device, make sure that the internal startup volume is selected in the Startup Disk pane of System Preferences.
Start up in safe mode. Note: If FileVault is enabled, or if a firmware password is set, or if the startup volume is a Fusion Drive or a software RAID, you can’t do this. Post for further instructions.
Safe mode is much slower to start and run than normal, and some things won’t work at all, including wireless networking on certain Macs.
The login screen appears even if you usually log in automatically. You must know the login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
When you start up in safe mode, it's normal to see a dark gray progress bar on a light gray background. If the progress bar gets stuck for more than a few minutes, or if the system shuts down automatically while the progress bar is displayed, the startup volume is corrupt and the drive is probably malfunctioning. In that case, go to Step 11. If you ever have another problem with the drive, replace it immediately.
If you can start and log in in safe mode, empty the Trash, and then open the Finder Info window on the startup volume ("Macintosh HD," unless you gave it a different name.) Check that you have at least 9 GB of available space, as shown in the window. If you don't, copy as many files as necessary to another volume (not another folder on the same volume) and delete the originals. Deletion isn't complete until you empty the Trash again. Do this until the available space is more than 9 GB. Then restart as usual (i.e., not in safe mode.)
If the startup process hangs again, the problem is likely caused by a third-party system modification that you installed. Post for further instructions.
Step 8
Launch Disk Utility in Recovery mode (see Step 1.) Select the startup volume, then run Repair Disk. If any problems are found, repeat until clear. If Disk Utility reports that the volume can't be repaired, the drive has malfunctioned and should be replaced. You might choose to tolerate one such malfunction in the life of the drive. In that case, erase the volume and restore from a backup. If the same thing ever happens again, replace the drive immediately.
This is one of the rare situations in which you should also run Repair Permissions, ignoring the false warnings it may produce. Look for the line "Permissions repair complete" at the end of the output. Then restart as usual.
Step 9
If the startup device is an aftermarket SSD, it may need a firmware update and/or a forced "garbage collection." Instructions for doing this with a Crucial-branded SSD were posted here. Some of those instructions may apply to other brands of SSD, but you should check with the vendor's tech support.
Step 10
Reinstall the OS. If the Mac was upgraded from an older version of OS X, you’ll need the Apple ID and password you used to upgrade.
Step 11
Do as in Step 9, but this time erase the startup volume in Disk Utility before installing. The system should automatically restart into the Setup Assistant. Follow the prompts to transfer the data from a Time Machine or other backup.
Step 12
This step applies only to models that have a logic-board ("PRAM") battery: all Mac Pro's and some others (not current models.) Both desktop and portable Macs used to have such a battery. The logic-board battery, if there is one, is separate from the main battery of a portable. A dead logic-board battery can cause a startup failure. Typically the failure will be preceded by loss of the settings for the startup disk and system clock. See the user manual for replacement instructions. You may have to take the machine to a service provider to have the battery replaced.
Step 13
If you get this far, you're probably dealing with a hardware fault. Make a "Genius" appointment at an Apple Store, or go to another authorized service provider.

After osx 10.9.5 upgrade email is not working

I upgraded today and email accounts in MAIL no longer work.
Help!

Have you restarted after upgrading?
Under Windows in the Menu bar select Connection Doctor. You will see green to indicate a connection and red to show there is a problem. Except for iCloud account you'll see two entries for each account 1) receiving and 2 SMTP for sending.
Most likely you need to re-enter your passwords.
In main account window add password then click out of the account to save.
Select account then select to edit SMTP setting.
EDIT SMTP SETTINGS
In Accounts window > Outgoing Mail Server SMTP: select to Edit SMTP Server list... from popup.
Select account in the list.(It's not uncommon to find extra SMTP servers listed. When you remove account, Mail does not delete the smtp info. You might need to do some clean up in the list to remove the extras.)
Under Advanced Tab:
Apple defaults to the default ports (25,465, 587) but some servers prefer a custom port. Check to see what port they recommend. Gmail for example likes 465, Outlook.com 587.
Verify if your server require SSL.
User Name. Enter full email address eg. [email protected]
Add password if it is blank.(If you have two step authentication setup, you'll need to get an app specific password more info)
http://www.google.com/landing/2step/
Open Connection Doctor under Window in the Menu bar.
Do you see green light snow for your account?
Occasionally you have to remove and add back an account. If it's a POP account, save al the messages in the Inbox to the Archive mailbox or move to a custom mailbox folder under "On My Mac". Removing a POP account deletes all messages in the Inbox. If these messages are not still on the sever you can loose messages if you do not save.

Very loud fan sound after sleep when Ram is upgraded.

Recently I have upgrade the Ram memory from 1Gb to 5Gb with (2x2GB) FB-DIMM DDR2 667MHz from Ondamatica. Memory works perfectly, hardware tests were OK and i didn't notice any issue except one: after sleep, fans start to spin faster and faster (seems like a vacuum) to what I supose Is the fastest speed they support, during arround a minute or 45 seconds. That generates an intense noise but happens only when awake afer sleep, not when restarting.
I've done almost everything: reset pvram, reset SMC, change memory slots... And the issue only stops when I remove the new two Ram modules.
I've read about it in some forums, but no one solved it. ¿Any suggestion before I return the Ram to the store?. Could be a software problem?.

It will or can happen but you can reduce it somewhat maybe using SmcFanControl (2.1.3.1 - wwww.macupdate.com ) to keep the fans above default by 200 rpm. And run Hardware Monitor to monitor temps as well. They may be running much warmer than they could/should/ought to.
1GB and your system was on starvation express! ouch. 4GB is more of a normal minimum even. 4 x 1GB is nice balanced setup. 2GB DIMMs might be warmer, run 70C perhaps. And they use about 15W each.

IMac freezes after OSX 10.9.1 upgrade

I have a 27in iMac running OSX 10.9.1 Mavericks and Safari 7.0.1. Sometimes Safari freezes and sometimes whole computer freezes. Able to move mouse pointer around but unable to click on anything.

Please tell me that Apple is not en route to being the new Microsoft which I so happily escaped a few years ago. My computer is doing the exact same thing. It went years without freezing, but since upgrading to OS 10.9.1 a couple of weeks ago and the lastest version of Safari, my iMac 27 can be counted on to freeze at least daily. As with your situation Bill, the only thing that is active is my mouse pointer, but that does nothing in that you can point till you turn blue because nothing esle on the computer is alive. I clean my caches, I reset Safari, and keep my computer clean and orgainized. It has frustratingly happened twice today. I have 12 gigs of RAM so thst certainly is not an issue. Come on Apple, get off your *** and deal with this issue. I'll accept the fact that I can't crop a photo in iPHoto since paying for an upgrade to that piece of crap! BTW, I can't help but distressingly note that your original complaint was registered at least 3 weeks ago and apparently nothing has been resolved. Perhaps Apple is recruiting personnel from Microsoft.
Sandy Scott

CS4 Design Suite not working after OSX 10.7.5 upgrade

I recently upgraded my Mac OS to 10.7.5 from 10.7.4. I also upgraded Java from SE6 to 7. Now my cs4 design suite will not open. I click on the Illustrator alias but nothing happens. I get the Rainbow Pinwheel that spins for 2 seconds and then stops. This also happens when I try using Photoshop, InDesign, and Dreamweaver. I've also tried opening using the .app file in the applications folder, but the same thing happens.
A side note: I tried to revert back to Java 6 with no luck. and I do not have a back up of my OS to revert back to 10.7.4. Everything was working great prior to the upgrades.
Please Help

Run teh Creative Suite Cleaner Tool, reinstall.
Mylenium

Mail, AppStore, Safari all crash after OSX 10.9.4 upgrade

I recently updated to OSX 10.9.4 and began having problems using native Mail client, AppStore and Safari. All crash upon trying to open.
Crash Dump shows as follows:
Process: Mail [650]
Path: /Applications/Mail.app/Contents/MacOS/Mail
Identifier:      com.apple.mail
Version:         7.3 (1878.6)
Build Info:      Mail-1878006000000000~1
Code Type:       X86-64 (Native)
Parent Process: launchd [214]
Responsible:     Mail [650]
User ID:         501
Date/Time:       2014-09-22 08:21:45.839 -0600
OS Version:      Mac OS X 10.9.4 (13E28)
Report Version: 11
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000000
VM Regions Near 0:
-->
__TEXT 0000000109ce9000-0000000109fdc000 [ 3020K] r-x/rwx SM=COW /Applications/Mail.app/Contents/MacOS/Mail
Does anyone have a suggestion as to how to go about resolving this?
Any help is much appreciated. I am not much of a troubleshooter on MBP, since I bought it in 2009 "it just works..." (until recently)
Thanks

Eric,
Thank you for your help. I downloaded the 10.9.5 Combo Update.
When I went to install it, the installer crashed.
Got this Info:
Process: Installer [1008]
Path: /System/Library/CoreServices/Installer.app/Contents/MacOS/Installer
Identifier:      com.apple.installer
Version:         6.0 (721)
Build Info:      Installer-721000000000000~67
Code Type:       X86-64 (Native)
Parent Process: launchd [214]
Responsible:     Installer [1008]
User ID:         501
Date/Time:       2014-09-23 08:07:23.481 -0600
OS Version:      Mac OS X 10.9.4 (13E28)
Report Version: 11
Sleep/Wake UUID: 44A9DA2A-03AF-47D8-B2CF-9014182076C0
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000000
VM Regions Near 0:
-->
__TEXT 00000001076d3000-00000001076fd000 [ 168K] r-x/rwx SM=COW /System/Library/CoreServices/Installer.app/Contents/MacOS/Installer
Application Specific Information:
Performing @selector(iaButtonAction:) from sender NSButton 0x600000143180
Any thoughts on where to go from here?
Thanks

No sound after upgrading to Windows 7 M55-S3293

I upgraded to Windows 7 and installed the drivers from Toshiba for my sound card and before installing checked the windows XP box under the compatibility tab. No sound. I did windows update for this driver and it installed an updated driver. No sound. I went to Realtek and installed the windows 7 generic driver for this sound card (thats all manufacturer's offer is a generic driver) and LOW sound. Now I rebooted and back to No sound.
Before windows 7 sound, after no sound.
Toshiba put out a fix for a contextant audio driver for the low sound problem to be corrected with windows 7 but I cannot find anything for my computer.
I don't know know what to do! I don't want to go back to using XP but sound is REALLY important. I would think this is an integrated sound card (Toshiba isn't making service manuals public anymore, it was there the other day and gone today) so I cannot remove it. I don't think I have any available PCI slots to install a new one internally and I don't want extrenal speakers since I do a lot of traveling.
Is there a fix I don't know about? What can I do? Please HELP!!!

Hi Ryan,
Go here: http://www.csd.toshiba.com/cgi-bin/tais/support/jsp/downloadDetail.jsp?soid=1671893&pf=true
and download the software called "Sound Utility to Turn Mute Off After Upgrading to Vista", it is made for people that upgrade to VISTA, however, once you have all your Toshiba updates installed by downloading the Toshiba updates, then apply this update to your Windows7 system and the problem will resolve.
I don't know why they did not make this update part of the Toshiba Update Package.
I hope this helps,
best,
Alejandro

Lost ipad sound after upgrading to ios7

As soon as I click the iOS7 upgrade my ipad volume is gone

First thing to try if you have no sound at all, even in the Music App, try rebooting the iPad.
Reboot the iPad by holding down on the sleep and home buttons at the same time for about 10-15 seconds until the Apple Logo appears - ignore the red slider if it appears on the screen - let go of the buttons. Let the iPad start up.
If you lost sounds for keyboard clicks, games or other apps, email notifications and other notifications, system sounds may have been muted.
System sounds can be muted and controlled two different ways. The screen lock rotation can be controlled in the same manner as well.
Settings>General>Use Side Switch to: Mute System sounds. If this option is selected, the switch on the side of the iPad above the volume rocker will mute system sounds.
If you choose Lock Screen Rotation, then the switch locks the screen. If the screen is locked, you will see a lock icon in the upper right corner next to the battery indicator gauge.
If you have the side switch set to lock screen rotation then the system sound control is in the control center. Swipe up from the bottom of the screen to get to control center . Tap on the bell icon and system sounds will return.
If you have the side switch set to mute system sounds, then the screen lock can be accessed in the same manner as described above.
This support article from Apple explains how the side switch works.
http://support.apple.com/kb/HT4085
Still no luck - try cleaning the dock connector opening of the iPad with a soft brush and just a little bit of rubbing alcohol.
If that fails, then try resetting all settings. Settings>General>Reset>Reset all settings. No data will be lost but all device settings have to be entered again.
Should you still have no sound after trying all of these steps, restoring the iOS software would be the next thing to try.

Garbled sound after upgrade to ios7.0.6 for ipad

pls advise if you experienced garbled sound after upgrade to ios7.0.6 for ipad2. thanks

Try reset all settings
Settings>General>Reset>Reset All Settings
Note: Data will not be affected but settings for Wi-Fi, FaceTime, Message, Home Sharing will be reset

HT4623 no sound after upgrade

My Iphone 4s had no sound after upgrade to ISO 6.
Please help me, thanks

Plug the headphones in.
Adjust volume.

Why My iPhone 4 doesn't have sound after I upgrade it to IOS 7.0.2

Why My iPhone 4 doesn't have sound after I upgrade it to IOS 7.0.2?

Try this - Reset the iPad by holding down on the Sleep and Home buttons at the same time for about 10-15 seconds until the Apple Logo appears - ignore the red slider - let go of the buttons. (This is equivalent to rebooting your computer.) No data/files will be erased.
 Cheers, Tom

[SOLVED] Lost Sound After Upgrade

Solved (for now at least). The problem appears to be a bug with alsa. Alsaconf writes a file called /etc/modprobe.d/50-sound.conf, which contains the aliases for the sound card. But for some reason it then wasn't reading the file. Copying the alias entries to /etc/modprobe.d/modprobe.conf to read directly from there seems to have worked.
Now to fix the frequency scaling.
===================== solved ===========================
I lost all sound after the last upgrade. I just rebooted because frequency scaling is also not working, and no sound.
all drivers seem to be there:
08:50 AM:~ $ lsmod |grep snd
snd_mpu401_uart 9264 0
snd_hda_codec_realtek 278132 1
snd_cs46xx 96800 1
snd_seq_dummy 3540 0
gameport 13760 2 snd_cs46xx
snd_hda_intel 31208 3
snd_hda_codec 82128 2 snd_hda_codec_realtek,snd_hda_intel
snd_hwdep 9976 1 snd_hda_codec
snd_rawmidi 26592 2 snd_mpu401_uart,snd_cs46xx
snd_ac97_codec 133560 1 snd_cs46xx
snd_seq_oss 36224 0
snd_seq_midi_event 8592 1 snd_seq_oss
snd_seq 64640 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi_event
snd_seq_device 8324 4 snd_seq_dummy,snd_rawmidi,snd_seq_oss,snd_seq
snd_pcm_oss 47328 0
snd_pcm 90872 5 snd_cs46xx,snd_hda_intel,snd_hda_codec,snd_ac97_codec,snd_pcm_oss
snd_timer 25344 2 snd_seq,snd_pcm
snd_page_alloc 10784 3 snd_cs46xx,snd_hda_intel,snd_pcm
snd_mixer_oss 20976 2 snd_pcm_oss
snd 76744 21 snd_mpu401_uart,snd_hda_codec_realtek,snd_cs46xx,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_rawmidi,snd_ac97_codec,snd_seq_oss,snd_seq,snd_seq_device,snd_pcm_oss,snd_pcm,snd_timer,snd_mixer_oss
soundcore 8576 2 snd
ac97_bus 2160 1 snd_ac97_codec
I don't see anything in the updated packages that might cause this:
[2009-08-09 18:09] upgraded gawk (3.1.6-3 -> 3.1.7-1)
[2009-08-09 18:09] upgraded gimp (2.6.6-2 -> 2.6.6-3)
[2009-08-09 18:09] upgraded imagemagick (6.5.4.5-1 -> 6.5.4.8-1)
[2009-08-09 18:09] upgraded kdelibs3 (3.5.10-5 -> 3.5.10-7)
[2009-08-09 18:09] upgraded mkinitcpio (0.5.25-1 -> 0.5.26-1)
[2009-08-09 18:09] upgraded polkit-qt (0.9.2-1 -> 0.9.2-2)
[2009-08-09 18:09] upgraded psmisc (22.7-1 -> 22.8-1)
[2009-08-09 18:09] upgraded python-pygame (1.9.0-1 -> 1.9.1-1)
[2009-08-09 18:09] upgraded python-pysqlite (2.4.1-2 -> 2.5.5-1)
[2009-08-09 18:09] upgraded readline (6.0.003-3 -> 6.0.004-1)
[2009-08-09 18:09] Fixing gshadow file ...
[2009-08-09 18:09] upgraded shadow (4.1.4.1-1 -> 4.1.4.2-1)
I tried firefox, xine, mythfrontend, avidemux2, xmms and mpg123 - there's no sound in any app. If I play something where there are indicators, like in xmms, the eq indicator levels jump, the song progresses like it's playing, but no sound. I reran alsaconf, it seems to be configured properly. The mixer sliders work and aren't muted. It doesn't work either as root or as user.
I have another computer hooked up through the line out and the sound still works fine there, so it doesn't appear to be a hardware problem.
I'm completely stumped at this point. If it's a bug somewhere, what's it a bug in to cause global sound loss? Is there anything else I'm overlooking? All I can think is that it must be muted somewhere, but I can't find it. Or else it has something to do with the cpu and cpu freq scaling that's also broken now.
===================== solved ===========================
Last edited by userlander (2009-08-10 15:04:45)

Try this - Reset the iPad by holding down on the Sleep and Home buttons at the same time for about 10-15 seconds until the Apple Logo appears - ignore the red slider - let go of the buttons. (This is equivalent to rebooting your computer.)
Check your settings. The iPads have a small switch on the right edge. It can be used as a rotation lock to keep the screen from automatically reorienting itself as you move around, but you need to have the tablet’s settings configured properly. That same switch, right above the volume buttons, can also be set to function instead as a mute button to silence certain types of audio.
If the switch is set to work as a mute button, you can change its purpose to “screen-rotation lock” by tapping the Settings icon on the home screen. On the Settings screen, tap General on the left side, and on the right side of the screen flick down to “Use Side Switch to.” Tap to select Lock Rotation or Mute to set the button’s function. Even if you set the side switch for your preferred use, you can still mute the Mini or lock the screen. Just double-click the Home button, and when the panel of apps appears along the bottom edge of the screen, flick the row from left to right with your finger. Tap the icon on the far left side of the row to either lock the iPad’s screen or mute the iPad’s alerts, notifications and sound effects. Music, podcasts and video are not muted unless you turn the volume all the way down.
iPhone: Can't hear through the receiver or speakers
http://support.apple.com/kb/ts1630
http://www.atreks.com/app-no-sound-on-ipad-4-%E2%80%93-what-to-do/
 Cheers, Tom

No sound after OSX 10.6.8 upgrade

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