For fix problem dell laptop if you have noise use linux mint or ubuntu and already try alsamelsa or pulseaudio still same you can just typing on your terminal:
echo 0 | sudo tee /sys/module/snd_hda_intel/parameters/power_save_controller
echo 0 | sudo tee /sys/module/snd_hda_intel/parameters/power_save
save and no need reboot..
Or you can use this script sh on my file :
./noise-dell.sh
Thanks