I am not on a Dell system right now, but have you looked at the MaxxAudioPro configuration?   I believe the setting is in the Advanced section where you can enable detection or show popup dialog..
I'm trying to get an Insperon 15 3567 headphone jack working again and the issue is that if I plug in headphones they don't work until I restart the PC with the headphones plugged in. Even when I do that the mic on them doesn't work but the audio works. I thought might have been the headphones themselves but after trying another pair with the same results, I am sure it is the PC itself. What can I do to fix this/ what is causing the issue? If you have any ideas please let me know. All ideas are greatly appreciated!!!
Dell Inspiron headphones don't work without a restart