Nothing shown after logging in. Only Desktop picture (is it right? the purple one) is shown. that's all.
How can I do about this? I normally used Ubuntu 15.10. But Ubuntu 16.04 doesn't.
My system is
- Intel core-i7 6700k
- Asus Z170-A
- Samgsung DDR4 8GBx2
- Samgsung SSD 850 Pro 1TB
- nVidia Geforce 970