Intel Broadwell (HDMI/DP 8ch) no sound

I guess this is a common problem, but I have no sound via HDMI. Below is my system as currently configured. I'm stuck at this point ...
Code:
FreeBSD bsd 13.1-RELEASE FreeBSD 13.1-RELEASE releng/13.1-n250148-fc952ac2212 GENERIC amd64
Mixer pcm is currently set to 100:100
Code:
cat /etc/rc.conf
hostname="bsd"
wlans_iwm0="wlan0"
ifconfig_wlan0="WPA DHCP"
create_args_wlan0="country US regdomain FCC"
sshd_enable="YES"
moused_enable="YES"
ntpdate_enable="YES"
ntpd_enable="YES"
# Set dumpdev to "AUTO" to enable crash dumps, "NO" to disable
dumpdev="AUTO"
dbus_enable="YES"
hald_enable="YES"
kld_list="i915kms"
nfs_client_enable="YES"
sddm_enable="YES"
linux_enable="YES"

cat /etc/sysctl.conf
hw.snd.default_unit=3

cat /boot/loader.conf
kern.vty=vt
compat.linuxkpi.i915_disable_power_well="0"

dmesg | grep pcm
pcm0: <Intel Broadwell (HDMI/DP 8ch)> at nid 3 on hdaa0
pcm1: <Realtek ALC283 (Left Analog)> at nid 33 and 25 on hdaa1
pcm0: <Intel Broadwell (HDMI/DP 8ch)> at nid 3 on hdaa0
pcm1: <Realtek ALC283 (Left Analog)> at nid 33 and 25 on hdaa1
pcm0: <Intel Broadwell (HDMI/DP 8ch)> at nid 3 on hdaa0
pcm1: <Realtek ALC283 (Left Analog)> at nid 33 and 25 on hdaa1
pcm0: <Intel Broadwell (HDMI/DP 8ch)> at nid 3 on hdaa0
pcm1: <Realtek ALC283 (Left Analog)> at nid 33 and 25 on hdaa1

cat /dev/sndstat
Installed devices:
pcm0: <Intel Broadwell (HDMI/DP 8ch)> (play)
pcm1: <Realtek ALC283 (Left Analog)> (play/rec) default
No devices installed from userspace.
 
Last edited by a moderator:
Thanks for the reply. Unfortunately, after making the change, still no sound. Just as a sanity check, I booted to a console to remove KDE/Xfce from the equation: still no sound. Testing with a live linux usb stick: HDMI sound worked w/o issue.
 

Crivens

Administrator
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Maybe you have some success with audio/oss. But that requires building a kernel on your own, without the audio drivers.
 
Presumably, the video driver doesn't negotiate whatever HDMI connection parameters it was supposed to negotiate, so alternative oss implementation is not going to help. As for the expectations, yes, it's completely normal for the sound to be broken with drm-kmod. File a bug at https://github.com/freebsd/drm-kmod (for the peace of mind), then forget about it.
 
Thanks for the replies.

>>yes, it's completely normal for the sound to be broken with drm-kmod

Is drm-kmod under active development? Or is this a forever situation?
 
"not broken for everyone" = less motivation to fix it :) One downside of volunteer driven development is that volunteers only test the hardware they own, which is frankly not enough to prevent regressions to the essential functionality, never mind anything else.
 
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