I am having the same issue with Dell Precision 5510 on Ubuntu 16.04. I've also tried the 4.6.7 and 4.7.5 kernel and it is also not working.
I am having the same issue with Dell Precision 5510 on Ubuntu 16.04. I've also tried the 4.6.7 and 4.7.5 kernel and it is also not working.