[CentOS] No sound over HDMI using nvidia graphics card
Lars Hecking
lhecking at users.sourceforge.net
Wed Jan 18 15:21:59 UTC 2012
Apologies for hijacking this thread, but I have posted here before and
received not a single response. This is on CentOS5.
http://lists.centos.org/pipermail/centos/2011-November/119707.html
Other than the OP, I don't want HDMI sound, but the builtin sound device is
not working. In a nutshell, a machine with this sound configuration
# lspci |grep -i aud
00:1b.0 Audio device: Intel Corporation 82801JI (ICH10 Family) HD Audio Controller
02:00.1 Audio device: nVidia Corporation GF108 High Definition Audio Controller (rev a1)
#
does not play any sound, whereas this otherwise identical one works
00:1b.0 Audio device: Intel Corporation 82801JI (ICH10 Family) HD Audio Controller
In the non-working case, /etc/modprobe.conf has
alias snd-card-1 snd-hda-intel
options snd-card-1 index=1
options snd-hda-intel index=1
remove snd-hda-intel { /usr/sbin/alsactl store 1 >/dev/null 2>&1 || : ; }; /sbin
/modprobe -r --ignore-remove snd-hda-intel
and on the working machine,
options snd-hda-intel index=0
remove snd-hda-intel { /usr/sbin/alsactl store 0 >/dev/null 2>&1 || : ; }; /sbin/modprobe -r --ignore-remove snd-hda-intel
The non-working config has /dev/audio1, which plays horribly distorted sound
(cat file >/dev/audio1). The working config has /dev/audio, which works fine.
The BIOS only has an option to enable sound, when I disable it, the snd*
modules don't get loaded and volume prefs etc. don't work (kinda logical).
I presume the problem is that there is no driver for the nvidia sound
device, yet it is configured as card 0 (default). Again, in the non-working
case I have
# cat /proc/asound/cards
1 [Intel ]: HDA-Intel - HDA Intel
HDA Intel at 0xf7ffc000 irq 169
#
and in the working case, I have
# cat /proc/asound/cards
0 [Intel ]: HDA-Intel - HDA Intel
HDA Intel at 0xf7ffc000 irq 82
#
Any ideas how I can get sound working on this machine?
(It works very well under CentOS6, btw., PA let's me choose either device
and the speaker tests are successful.)
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