Description of problem:
Installed Fedora 15 x86_64 on Acer AO522 Netbook.
Netbook is based on C50 APU dual core/Radeon video with hdmi output.
Video works find over HDMI.

Version-Release number of selected component (if applicable):
$ uname -r
2.6.38.4-20.fc15.x86_64


How reproducible:
Consistant. 

Steps to Reproduce:
1.Connect HDMI TV
2.Use Gnome sound tool and select HDMI hardware
3.Use test speaker buttons to test audio output
4. No audio
  
Actual results:
No audio over HDMI, Windows 7 works fine on same gear.

Expected results:
Audio should work, it does on my F14 AMD 780 computer connected to the same HDMI display.

Additional info:

$ lspci
00:00.0 Host bridge: Advanced Micro Devices [AMD] Device 1510
00:01.0 VGA compatible controller: ATI Technologies Inc Device 9804
00:01.1 Audio device: ATI Technologies Inc Device 1314
00:11.0 SATA controller: ATI Technologies Inc SB700/SB800 SATA Controller [AHCI mode]
00:12.0 USB Controller: ATI Technologies Inc SB700/SB800 USB OHCI0 Controller
00:12.2 USB Controller: ATI Technologies Inc SB700/SB800 USB EHCI Controller
00:13.0 USB Controller: ATI Technologies Inc SB700/SB800 USB OHCI0 Controller
00:13.2 USB Controller: ATI Technologies Inc SB700/SB800 USB EHCI Controller
00:14.0 SMBus: ATI Technologies Inc SBx00 SMBus Controller (rev 42)
00:14.2 Audio device: ATI Technologies Inc SBx00 Azalia (Intel HDA) (rev 40)
00:14.3 ISA bridge: ATI Technologies Inc SB700/SB800 LPC host controller (rev 40)
00:14.4 PCI bridge: ATI Technologies Inc SBx00 PCI to PCI Bridge (rev 40)
00:15.0 PCI bridge: ATI Technologies Inc Device 43a0
00:15.2 PCI bridge: ATI Technologies Inc Device 43a2
00:15.3 PCI bridge: ATI Technologies Inc Device 43a3
00:18.0 Host bridge: Advanced Micro Devices [AMD] Device 1700 (rev 43)
00:18.1 Host bridge: Advanced Micro Devices [AMD] Device 1701
00:18.2 Host bridge: Advanced Micro Devices [AMD] Device 1702
00:18.3 Host bridge: Advanced Micro Devices [AMD] Device 1703
00:18.4 Host bridge: Advanced Micro Devices [AMD] Device 1704
00:18.5 Host bridge: Advanced Micro Devices [AMD] Device 1718
00:18.6 Host bridge: Advanced Micro Devices [AMD] Device 1716
00:18.7 Host bridge: Advanced Micro Devices [AMD] Device 1719
06:00.0 Ethernet controller: Atheros Communications AR8152 v2.0 Fast Ethernet (rev c1)
07:00.0 Network controller: Broadcom Corporation BCM4313 802.11b/g LP-PHY (rev 01)


$ 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: SB [HDA ATI SB], device 0: CONEXANT Analog [CONEXANT Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

$ lsmod
Module                  Size  Used by
tcp_lp                  2183  0 
fuse                   62289  3 
8021q                  18723  0 
cpufreq_ondemand        9466  2 
powernow_k8            16054  0 
freq_table              3963  2 cpufreq_ondemand,powernow_k8
mperf                   1505  1 powernow_k8
garp                    6087  1 8021q
stp                     1951  1 garp
llc                     4716  2 garp,stp
sco                    16268  2 
bnep                   14899  2 
l2cap                  52193  3 bnep
bluetooth              91207  5 sco,bnep,l2cap
ip6t_REJECT             4048  2 
nf_conntrack_ipv6       7978  1 
nf_defrag_ipv6          9531  1 nf_conntrack_ipv6
ip6table_filter         1695  1 
ip6_tables             16850  1 ip6table_filter
vfat                    8720  1 
fat                    44848  1 vfat
snd_hda_codec_conexant    50718  1 
snd_hda_codec_hdmi     22998  1 
snd_hda_intel          23694  2 
snd_hda_codec          80822  3 snd_hda_codec_conexant,snd_hda_codec_hdmi,snd_hda_intel
snd_hwdep               6368  1 snd_hda_codec
snd_seq                52438  0 
snd_seq_device          6001  1 snd_seq
snd_pcm                78484  3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec
uvcvideo               54609  0 
videodev               63426  1 uvcvideo
sp5100_tco              5333  0 
v4l2_compat_ioctl32     6697  1 videodev
snd_timer              19593  2 snd_seq,snd_pcm
microcode              18117  0 
joydev                  9635  0 
i2c_piix4              10526  0 
k10temp                 3303  0 
snd                    62686  13 snd_hda_codec_conexant,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_seq,snd_seq_device,snd_pcm,snd_timer
soundcore               6299  1 snd
snd_page_alloc          7431  2 snd_hda_intel,snd_pcm
atl1c                  30919  0 
sparse_keymap           3302  0 
rfkill                 16552  3 bluetooth
wmi                     9105  0 
uinput                  7419  0 
ipv6                  282108  35 ip6t_REJECT,nf_conntrack_ipv6,nf_defrag_ipv6
video                  12432  0 
radeon                666292  3 
ttm                    55120  1 radeon
drm_kms_helper         27243  1 radeon
drm                   187648  5 radeon,ttm,drm_kms_helper
i2c_algo_bit            5014  1 radeon
i2c_core               25468  6 videodev,i2c_piix4,radeon,drm_kms_helper,drm,i2c_algo_bit