Strange HDMI output

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Hello!

The problem that I have is more than a year old. My sound card is

00:14.2 Audio device: Advanced Micro Devices [AMD] nee ATI SBx00
Azalia (Intel HDA) (rev 40)

00:14.2 0403: 1002:4383 (rev 40)


The modules used for it are

snd_hda_codec_hdmi     26777  1
snd_hda_codec_idt      33849  1
snd_hda_intel          25030  2
snd_hda_codec         109362  3
snd_hda_codec_hdmi,snd_hda_codec_idt,snd_hda_intel
snd_hwdep               5150  1 snd_hda_codec
snd_pcm                57706  3 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel
snd_page_alloc          5874  2 snd_pcm,snd_hda_intel
snd_timer              14764  1 snd_pcm
snd                    49595  11
snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_hda_codec_idt,snd_pcm,snd_hda_codec,snd_hda_intel
soundcore               4034  1 snd

aplay -l gives

**** List of PLAYBACK Hardware Devices ****
card 0: SB [HDA ATI SB], device 0: 92HD88B1 Analog [92HD88B1 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0



The only problem that I have is the strange behaviour of HDMI output.
If I try to play video via mplayer using option -ao alsa:device=hw=1.3
then I get no sound on TV and the playback is fast (as when
fastforward is used).

Things were working fine with kernel 2.6.39, but when I've switched to
version 3.2 this problem has appeared. Now I've tried it again with
3.10 and things still don't work. What could be the reason for it?

I've also tried VLC to play video. There the playback goes at correct
speed, but still I get no sound.

When I open alsamixer for card1 (HDMI) I see there only one control for S/PDIF.

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