Audio stops working when HDMI monitor cycles power

I'm experiencing the same issue on an up-to-date Ubuntu 12.04 beta machine.

[jherm@htpc ~]$ sudo aplay -l
**** List of PLAYBACK Hardware Devices ****
Home directory /home/jherm not ours.
card 0: SB [HDA ATI SB], device 0: ALC662 rev1 Analog [ALC662 rev1 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: SB [HDA ATI SB], device 1: ALC662 rev1 Digital [ALC662 rev1 Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: Generic [HD-Audio Generic], device 3: HDMI 0 [HDMI 0]
  Subdevices: 0/1
  Subdevice #0: subdevice #0

Here's the unique HDMI-related links from my syslog:

$ sudo grep HDMI /var/log/syslog | cut -d' ' -f11- | sort -n | uniq
Codec=0 Pin=3 Presence_Detect=0 ELD_Valid=0
Codec=0 Pin=3 Presence_Detect=1 ELD_Valid=1
HDMI hot plug event: Codec=0 Pin=3 Presence_Detect=0 ELD_Valid=1
HDMI hot plug event: Codec=0 Pin=3 Presence_Detect=1 ELD_Valid=0
HDMI status: Codec=0 Pin=3 Presence_Detect=0 ELD_Valid=0
HDMI status: Codec=0 Pin=3 Presence_Detect=1 ELD_Valid=1
hot plug event: Codec=0 Pin=3 Presence_Detect=0 ELD_Valid=0
hot plug event: Codec=0 Pin=3 Presence_Detect=0 ELD_Valid=1
hot plug event: Codec=0 Pin=3 Presence_Detect=1 ELD_Valid=0
hot plug event: Codec=0 Pin=3 Presence_Detect=1 ELD_Valid=1
input: HD-Audio Generic HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:03.0/0000:01:00.1/sound/card1/input11
input: HD-Audio Generic HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:03.0/0000:01:00.1/sound/card1/input12
input: HD-Audio Generic HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:03.0/0000:01:00.1/sound/card1/input8
plug event: Codec=0 Pin=3 Presence_Detect=0 ELD_Valid=0
plug event: Codec=0 Pin=3 Presence_Detect=0 ELD_Valid=1
plug event: Codec=0 Pin=3 Presence_Detect=1 ELD_Valid=0
plug event: Codec=0 Pin=3 Presence_Detect=1 ELD_Valid=1
status: Codec=0 Pin=3 Presence_Detect=0 ELD_Valid=0
status: Codec=0 Pin=3 Presence_Detect=1 ELD_Valid=1

This issue occurs after I power cycle my TV and A/V receiver (HDMI passes through receiver) while the machine stays on, I have not yet debugged whether it's caused by the receiver or TV itself. It seems like if I power cycle ONLY the receiver after getting into this scenario that audio out starts working again.

Please let me know if I can provide more details. Thanks!

while your symptoms sound similar, you're likely experiencing an unrelated issue. Please file a new bug for it using the command 'ubuntu-bug linux'.

I am able to Confirm this bug on Linux Mint 12 Lisa. Anyways, This is a recently introduced Bug ( within the last couple of weeks ), and i am able to reproduce the bug regardless of desktop environment ( Tested on LXDE, Cinnamin, and GNOME 3 ).

Anyways, A temporary fix to this bug is to switch to a non-X11 termal ( CTRL +ALT+F1 ), and then back to the X11 terminal ( ALT+F1 ).

As for testing:
Set the Default Audio Output to the HDMI Port.
Start Playing a music File
Cycle the Monitor Power.
(At this Point The Sound stops)
Appy the Temporary fix Press CTRL+ALT+F1 and then ALT+F7.
(At this Point The Sound Resumes at whatever Position the Stream is)