On Fri, 23 Jun 2017 18:17:36 +0100
John Pilkington <J.Pilk(a)tesco.net> wrote:
Thanks for the reply. I had tried both aplay -l and aplay -L, and
saw only nVidia devices.
aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: NVidia [HDA NVidia], device 7: HDMI 1 [HDMI 1]
Subdevices: 1/1
Subdevice #0: subdevice #0
Here's something else, hot off the screen :
dmesg | grep -i hda
[ 20.912368] snd_hda_intel 0000:01:00.1: Disabling MSI
[ 20.912376] snd_hda_intel 0000:01:00.1: Handle vga_switcheroo
audio client
[ 21.501482] input: HDA NVidia HDMI/DP,pcm=3 as
/devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card0/input5
[ 21.501539] input: HDA NVidia HDMI/DP,pcm=7 as
/devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card0/input6
[ 146.001011] snd_hda_codec_hdmi hdaudioC0D0: HDMI: invalid ELD data
byte 12
?
alsa is only aware of the sound devices on the video card.
If alsa doesn't see a device, it won't work in pulse (or anywhere).
Alsa is the underlying access to the hardware.
So, is there any way that you have it turned off in the BIOS?
Is there a blacklist for the device in /etc/modprobe.d?
Do an lsmod and an lspci, and check if the sound device on the
motherboard is mentioned there.
Run journalctl -r or journalctl -b, and do a search on snd_ ( /snd_) to
see if there was an error loading the driver for the motherboard sound
device.
Could you have caused an issue when you installed the new video card?
Bent something, loosened something, etc.