Comment 14 for bug 1575078

Here is a discussion about this bug:

http://en.community.dell.com/support-forums/laptop/f/3517/t/19661257?pi41097
https://www.reddit.com/r/Dell/comments/4e8mrb/headphone_issues_with_dell_xps_15_9550/

Some people are claiming that this issue can be solved by software. While other are telling that sound card replacement solves the issue.