I can also confirm this problem.
The system is starting when i use the 4.4.0-21-generic (recovery mode) It doesnt start when i choose 4.4.0-21-generic
I only see a blue screen when i would start with 4.4.0-21-generic
4.2.0-34-generic is working fine
I can also confirm this problem.
The system is starting when i use the 4.4.0-21-generic (recovery mode)
It doesnt start when i choose 4.4.0-21-generic
I only see a blue screen when i would start with 4.4.0-21-generic
4.2.0-34-generic is working fine