Comment 4 for bug 912866
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| madbiologist (me-again) wrote Re: No more audio in 12.04 | #4 |
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1b1ed1a
(Get the code!)
As Luke said HDMI audio on Radeon hardware has been disabled by default by the upstream kernel developers, as it causes blank screens on a lot of systems. You can re-enable HDMI audio by adding "radeon.audio=1" to your GRUB boot options. There are reports here in Launchpad and on Phoronix that this also fixes the fast video playback problem.