On my ubuntu 16.04 with 4.4 kernel I faced many problems.So,when 4.6 kernel is released I updated it and problems are solved.

So,I updated the kernel for deepin 15.2 too from 4.4 to 4.6

There is lot of problem around network after moving to 4.6
connects to wifi - but doesn't resolve host names (with both auto and Manual)
Tried after setting Ipv6 to ignore - same behaviour

Now I removed 4.6 kernel and back to 4.4 - it's normal now

Please look into this when deepin migrates from 4.4 kernel to 4.6 kernel