With Rocky Linux 9 (clone of RHEL 9), I do not get audio of the front
headphone jack or the optical output on the back. I do get audio out of
the line out on the back. The front port does not work with Rocky Linux
8, Ubuntu and Fedora, and I did not test the optical. With Windows, the
front jack works as expected with the realtek driver installed, and I
did not test the optical on Windows.
The output of /usr/sbin/alsa-info.sh is here:
http://alsa-project.org/db/?f=0d71a1351cd49f220c36fe69cc9af93f1d71ee3c
I built the computer with a Gigabyte Z690 AERO G motherboard that has a
realtek alc4080 codec and Intel Z690 chipset.
With Rocky Linux 9, without the headphones plugged in the sounds
settings show:
digital output (s/sdif) - usb
hdmi/displayport-built-in audio
when plug in headphones in the front jack “headphones - usb audio”
appears and disappears when I unplug the headphones.
If I use the following command, I can hear the audio clip through the
headphones:
aplay -D plughw:Audio,1 /usr/share/sounds/alsa/Front_Left.wav
If I use the following command, I can hear the audio clip through the
optical:
aplay -D plughw:Audio,2 /usr/share/sounds/alsa/Front_Left.wav
I’m using alsa-lib 1.2.7 from the Rocky Linux repo. I tried to compile
1.2.8 from source but when I run “./configure” I got the error:
./configure: line 2998: syntax error near unexpected token `external'
./configure: line 2998: `AM_GNU_GETTEXT(external)'
I noticed
https://github.com/alsa-project/alsa-ucm-conf/blob/master/ucm2/USB-Audio/USB-Audio.conf
has more If.realtek-alc4080 entries. When I copied the
If.realtek-alc4080 section into
/usr/share/alsa/ucm2/USB-Audio/USB-Audio.conf and
/usr/share/alsa/ucm2/conf.d/USB-Audio/USB-Audio.conf, and after I
rebooted, I get the same performance.
One thing I noticed in
https://github.com/alsa-project/alsa-ucm-conf/blob/master/ucm2/USB-Audio/USB-Audio.conf
is the only Gigabyte entry under If.realtek-alc4080 is “Gigabyte Z590
Aorus Pro AX”. I see other manufactures have Intel Z690 chipset
support but not Gigabyte.
I’m not sure if I’m hitting a bug or if my motherboard is not
supported. Please point me in the correct direction if this isn’t an
AlSA issue. I posted the Rocky Linux forum but was not able to resolve
the issue.
Brian
