Yes, config_snd_hda_intel is on the kernel

but I have changed the sound card to :

03:04.0 Multimedia audio controller: C-Media Electronics Inc CMI8788 [Oxygen HD 
Audio]
Subsystem: ASUSTeK Computer Inc. Device 8521
Flags: bus master, medium devsel, latency 64, IRQ 16
I/O ports at d800 [size=256]
Capabilities: [c0] Power Management version 2

the snd_oxygen driver is on the kernel but it does not appear as kernel driver in use neither as kernel modules available
when I run alsa the output is : -bash:alsa:command not found / when I run amixer the output is :mixer attach default error: no such file or directory

when I try to use the mixer on multimedia (xfce4) the output is GStramer was unable to detect any sound devices...