No sound with ATI R6xx HDMI + ALSA

Question

Hi guys,
After a few hours of googling and trying different solutions, I don't get any sound on my computer. Hope somebody has an idea...
Output of aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: Generic [HD-Audio Generic], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: Generic_1 [HD-Audio Generic], device 0: ALC889 Analog [ALC889 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: Generic_1 [HD-Audio Generic], device 1: ALC889 Digital [ALC889 Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
Content of /etc/asound.conf (no .asoundrc, the user is in the group audio)
pcm.!default {
        type hw
        card 0
        device 3
ctl.!default {
        type hw
        card 0
Output of lsmod | grep '^snd' | column -t
snd_hda_codec_realtek  59152  1
snd_hda_codec_hdmi     23704  1
snd_hda_intel          25700  0
snd_hda_codec          97432  3  snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_intel
snd_hwdep              6300   1  snd_hda_codec
snd_pcm                74926  3  snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel
snd_page_alloc         7217   2  snd_pcm,snd_hda_intel
snd_timer              18966  1  snd_pcm
snd                    60021  7  snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_hda_codec,snd_hda_intel
Content of the /dev/snd directory
drwxr-xr-x  2 root root       80 Oct  1 23:11 by-path
crw-rw----+ 1 root audio 116,  4 Oct  1 23:11 controlC0
crw-rw----+ 1 root audio 116, 10 Oct  1 23:11 controlC1
crw-rw----+ 1 root audio 116,  3 Oct  1 23:11 hwC0D0
crw-rw----+ 1 root audio 116,  9 Oct  1 23:11 hwC1D0
crw-rw----+ 1 root audio 116,  2 Oct  1 23:13 pcmC0D3p
crw-rw----+ 1 root audio 116,  8 Oct  1 23:11 pcmC1D0c
crw-rw----+ 1 root audio 116,  7 Oct  1 23:11 pcmC1D0p
crw-rw----+ 1 root audio 116,  6 Oct  1 23:11 pcmC1D1p
crw-rw----+ 1 root audio 116,  5 Oct  1 23:11 pcmC1D2c
crw-rw----  1 root audio 116,  1 Oct  1 23:11 seq
crw-rw----+ 1 root audio 116, 33 Oct  1 23:11 timer
Content of modprobe.conf (I use fglrx driver)
blacklist radeon
And last but not least the relevant part of my syslinux.cfg
LABEL arch
        MENU LABEL Arch Linux
        LINUX ../vmlinuz-linux
        APPEND root=/dev/sda2 ro radeon.audio=1 nomodeset
        INITRD ../initramfs-linux.img
Thanks in advance !

Answer 1

I seem to be having the same problem playing HDMI audio.  Do you happen to remember how you got this resolved?
For any interested parties, my alsa mixer screen looks something like this as well:
──────────────────────────── AlsaMixer v1.0.24.2 ─────────────────────────────
Card: HD-Audio Generic                               F1:  Help               
Chip: ATI R6xx HDMI                                  F2:  System information
View: F3:[Playback] F4: Capture  F5: All             F6:  Select sound card 
Item: S/PDIF                                         Esc: Exit               
                                     ┌──┐                                     
                                     │OO│                                     
                                     └──┘                                     
                                  < S/PDIF >
Audio works fine through the Realtek chip (HDA ATI SB card). Just not through HDMI.