No audio via miniDisplayport to HDMI after upgrade to Lion

Since upgrading from Snow Leopard to Lion I have lost sound output through the mini displyport to my HDTV. Other people have posted this issue and had success with doing an SMC reset but I have tried over 5 times now and it doesn't work for me. I have an early 2011 Macbook Pro.

If you left all the peripherals connected while performing the Lion upgrade that may have confused the SMC. Do a SMC reset (it may take 2-3 attempts) and see if that helps. Please follow the instructions carefully.
SMC RESET
Shut down the computer.
Unplug the computer's power cord and all peripherals.
Press and hold the power button for 5 seconds.
Release the power button.
Attach the computers power cable.
Press the power button to turn on the computer.
PRAM RESET
Shut down the computer.
Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys.

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After upgrading to lion I am experiencing a lot of problems with time caspule
1. backup fail: it starts and than fails (error message and yellow warning triangle)
2. unable to connect to TC disk, neither from airport utility, nor from Finder
3. Airport Utility hangs while trying to manually modify configuration (rainbow weel).
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Hi William
The disk is the internal Time Capsule Disk. It's a 1Tb model.
My iMac is localized in Italian
So I write here the Italian message and a possible translation
The first error message I get opening Airport Utility is:
Utility Airport ha trovato una Time Capsule 802.11n (2.a generazione) che segnala problemi
(AirPort Utility has found a Time Capsule 802.11n (2nd generation), which indicates problems)
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"Problema 1 di 1: Il disco Time Capsule non funziona"
(Problem 1 of 1: The Time Capsule Disk doesn't work)
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(There was a problem with the Time Capsule disk. Connect a USB hard drive to your Time Capsule disk and use Disk Utility Airport panel to store data and run the backup.)
While if I go to the manual settings and I select the disk,
on the disk data info I have
Stato S.M.A.R.T.: Non funziona
(S.M.A.R.T status: Not working)
As I said before, apart from that problem, everything else (time machine, backups and file recovery) looks working good (until proven otherwise eh eh)
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I called the call center and they just said to return the TC for disk repair (have to pay, warranty expired).
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I hope this info helps
Franco Andrea

No audio via miniDisplayport to HDMI after upgrade to Lion

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