Public bug reported:
Since the 11.10 upgrade, when Digital stereo (HDMI) is chosen as audio
ouptut (audio settings, Output tab), no sound comes, and video playback
is very fast, as if there's no pause between frames.
There are 2 entries in the output tab. One is RS880 Audio Device [Radeon
HD 4200] Digital Stereo [HDMI], the other is Internal audio stereo
analog.
No problems when the other output is selected. Even video oplayback is
OK.
Some search results say that this happen when the HDMI monoitor is
disconnected and HDMI is selected. In this case, the monitor is
connected with HDMI and video has no problem. Also. the exact same
configuration did not have this problem in 11.04
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Incomplete
** Tags: audio hdmi playback
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https://bugs.launchpad.net/bugs/897008
Title:
HDMI: no sound, video too fast
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