Using 14.04, i have intermittent issues with audio (works then stops), tried many tips (and actually reverted from 16.04 to a fresh 14.04) but it's still there...
When applying the troubleshooting procedure, i noticed that the driver is referenced with different names in different places using dash or underscore :
snd-hda-intel in sound modules,
snd_hda_intel in hardware devices.
Why these different names ? could this have an impact ?
Thanks for your help
find /lib/modules/`uname -r` | grep snd | grep hda | grep intel /lib/modules/4.4.0-36-generic/kernel/sound/pci/hda/snd-hda-intel.ko
Physical audio hardware
lspci -v | grep -A5 -i "audio" 00:1b.0 Audio device: Intel Corporation 7 Series/C210 Series Chipset Family High Definition Audio Controller (rev 04) Subsystem: Intel Corporation Device 204f Flags: bus master, fast devsel, latency 0, IRQ 29 Memory at f7d30000 (64-bit, non-prefetchable) [size=16K] Capabilities: <access denied> Kernel driver in use: snd_hda_intel
Soundplay cards and devices
aplay -l **** List of PLAYBACK Hardware Devices **** card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: PCH [HDA Intel PCH], device 7: HDMI 1 [HDMI 1] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: PCH [HDA Intel PCH], device 8: HDMI 2 [HDMI 2] Subdevices: 1/1 Subdevice #0: subdevice #0