Hello all, I recently set up a home theater PC running Ubuntu 11.04 Natty Narwhal. It is connected via HDMI to my Samsung receiver which supports 5.1 output (including PCM, Dolby Digital, and DTS). However, ALSA seems to think it is only a stereo device--sort of. If I run, for example, "speaker-test -c6", I get audio from the front left, center, and front right just fine, but audio from the rear left and rear right comes out the corresponding front channels instead. If I play a test 6-channel WAV file using aplay from the command line, I get very odd results (some channels not played at all, others on the wrong channel), whereas if I just double-click and open it using the default Ubuntu player, I get the front left/right/center fine with the rear channels on the fronts, same as speaker-test. I've spent many hours on IRC with the Pulse Audio people and haven't made any headway at all; it's not just something silly like "did you plug your speakers in?", so I'm getting very concerned at this point. I've attached the output from the alsa-info script, as well as a couple of other diagnostic results that some of the Pulse Audio people had asked for. Please let me know if anyone has any suggestions for how I can get ALSA to properly handle my HDMI output. Thanks, David
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alsa-info
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amixer_c0
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eld
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