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5670: no sound on HDMI; worked fine before

Question asked by blaq on Sep 21, 2015

During the summer, the audio on my HDMI output stopped working.


  • Windows 7 up-to-date
  • Updated AMD drivers this summer (hint?)
  • Catalyst reports software is up to date. Running 15.20.1062.1004-150803a1-187669C.
  • With the TV on and video or music playing, the Playback Devices window shows:
    • Green checkmark on AMD HDMI Output (AMD High Definition Audio Device)
    • It's set as default device
    • VU meter shows no activity (if I switch to another output, its VU meter shows audio playing)
    • In Properties, AMD HDMI Output level is set at 73 and not muted
    • No audio on the TV (TV is also not muted, with medium volume)
  • Video works fine, though.


How can I debug this? Thanks.