System Information
Operating system: Windows-7-6.1.7601-SP1 64 Bits
Graphics card: GeForce GTX 660 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 441.20
Blender Version
Broken: version: 2.82 (sub 6), branch: master, commit date: 2019-12-20 23:35, hash: rB4d0a91d03d1c
Short description of error
Set texture for hair density, add color ramp for density texture.
Density broken.
Here the file: