Computer has a generic Intel motherboard with integrated audio ports.
Everything works great except the audio.
Output from the green "headphone" port to the amplifier sounds like a powerline hum as if the input cable is just acting like an antenna.
TROUBLESHOOTING AND INFORMATION GATHERING:
Upon startup, via pressing of F2, was able to verify that audio is enabled in the BIOS.
Then after boot into Ubuntu 16.04 LTS and login, with a terminal window open:
dmidecode | more
shows the Base Motherboard to be Intel DQ35J0
When I type in
I get this:
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC268 Analog [ALC268 Analog]
Subdevice #0: subdevice #0
lspci -v | grep -A7 -i "audio"
00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 02)
Subsystem: Intel Corporation 82801I (ICH9 Family) HD Audio Controller
Flags: bus master, fast devsel, latency 0, IRQ 32
Memory at e0420000 (64-bit, non-prefetchable) [size=16K]
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel
00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 (rev 02) (prog-if 00 [Normal decode])
Ubuntu can detect the device at the hardware level and the
snd_hda-intel kernel driver is installed.
When I go into sound settings via right-clicking on the speaker, the output section device list is blank.
No audio comes out of the port whether I try Youtube in Chromium or use aplay with a .mp3 file.
Rhythmbox finds the files, and when I click play it turns into a pause symbol. Yet no audio comes out.
Question: How can I use the integrated Intel ALC268 audio device? Or what is the best work-around?