sudo pacman -S pulseaudio pulseaudio-alsa pavucontrol alsa-lib alsa-utils alsa-firmware linux-firmware
pulseaudio --start
snd_intel_dspcfg.dsp_driver=1
GRUB_CMDLINE_LINUX_DEFAULT=(тут ваши параметры... , snd_intel_dspcfg.dsp_driver=1)
grub-mkconfig -o /boot/grub/grub.cfg