I can confirm this bug, but i do not believe it is pulseaudio related.
I am experiencing the exact same problems with a new install of Ubuntu
12.04 Server Edition without pulseaudio, with standard alsa sound,
lightdm and xbmc eden.
I believe the problem is Kernel or AMD Drivers related.
When the TV or Monitor is turned off, i get the following log entries in kernel
log:
HDMI hot plug event: Codec=0 Pin=3 Presence_Detect=0 ELD_Valid=0
HDMI status: Codec=0 Pin=3 Presence_Detect=0 ELD_Valid=0
When the TV is turned back on, no HDMI status is detected to turn the
ELD_Valid=1, so no sound from HDMI.
Removing and re plugging the HDMI cable results in a:
HDMI hot plug event: Codec=0 Pin=3 Presence_Detect=0 ELD_Valid=1
HDMI status: Codec=0 Pin=3 Presence_Detect=1 ELD_Valid=1
And sounds begins flowing again.
Logging out from the XBMC session and logging back on, results in the same
events being logged:
HDMI hot plug event: Codec=0 Pin=3 Presence_Detect=0 ELD_Valid=1
HDMI status: Codec=0 Pin=3 Presence_Detect=1 ELD_Valid=1
And sounds begins flowing again.
I was previously running the same setup with Beta 1 and didn't
experience this problem.
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https://bugs.launchpad.net/bugs/1001842
Title:
No Audio from HDMI After Switching Monitor Off / On
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