I have just upgrade to 10.7 Lion last night. Whenever I change the volume, no matter by pressing the volume up or down button on the keyboard, or using the mouse to change the volume on the top bar, the computer hangs for a while, with no sound, for a few seconds, the youtube video reset or hang, even the Safari hangs for a few seconds.
Anyone has the same problem? Any fix on this?
iMac, Mac OS X (10.7)
Have you performed a PRAM reset?
(Restart your computer, then hold command + option + P + R until you hear the startup chime a second time.)
Have you performed a PRAM reset?
(Restart your computer, then hold command + option + P + R until you hear the startup chime a second time.)
Same sound issue here with a MBP 13". Have seen a number of threads on this. All controls greyed out for internal sound settings. Plugging and un-plugging headset restores the sound until a reboot, then gone again. Of course seeing so many reports on this after day one Im suprised Apple missed this bug. Hopfully they will address it in the inevitible release of 10.7.1.
It's fixed, no problem now, thanks so much!
However, I hold the Command + option + P + R but I couldn't hear the startup chime a 2nd time. I tried twice. Anyway, when I test the volume button, it works with no problem.
Sounds like you have a different problem, Jack. What does system preferences list as your output device when the audio isn't properly working? If it tells you that you're using digital out with nothing plugged into the headphone jack, and if audio works consistently with headphones connected, I think this may actually be a hardware issue, though it's difficult to tell through the internets.
I've found a number of threads from people speaking to the same problem with different Mac models. The audio was working perfectly after the initial install then, after a reboot... no sound output from the internal speakers, volume set itself to "0" and the controls were greyed out. If you inserted a headphone jack it would reset the sound to work until you rebooted, then... rinse and repeat.
One of the proposed solutions was to change the Audio Midi setup to 32bit and it fixed the problem. Im sure (hope) it will be adressed in an inevitible update.
Thanks for the perspective.
Sounds like an incompatibility with the 64bit kernel. This will be addressed in an update, almost certainly.
The midi solution does not work, if the midi program crashes each time
After another reboot the problem came back for me. Plugging and un-plugging a headset works to temporarily remedy the problem until a reboot. That is the fix I will use until they post an update. Perhaps it will work for you as well maprx.
tried that as I always used external speakers, but now I have no output at all, no external or internal, tried the smc and the pram, no fix there
Oh thanks! that works perfectly..it's annoying to have to do it but really simple...thanks! Kate
That's great Kate. Overall I'm quite happy with Lion. Shouldn't be long before the fix arrives!
Another thread suggested this fix see screens
Removal of the following files
~/Library/Preferences/Audio/*.plist
~/Library/Preferences/com.apple.soundpref.plist
This is a possibility for a fix.
Christopher Reynolds, ASQ CRE, PMP, BS IS
Thanks for the file removal suggestion. First, I dont appear to have the file "~/Library/Preferences/com.apple.soundpref.plist". Not sure why. Second, removing the "~/Library/Preferences/Audio/*.plist" files alone didnt fix the problem (for me anyway).
Not to dwell on the issue... here is a link to the same problem... simpler explanation:
I have an issue wich is after startup in os x 10.7 on my imac. It seems there can be audio dropout in itunes as it is loading other processes. This does not happen in snow lepard. It continues for about 5 mins after startup. I have 4GB ram in the computer and should cope with audio playback.
Sound volume problem after upgraded to Lion Mac OS X 10.7? Any help?
