Sm T580: Xda [verified]

The official XDA forum for this device is organized under "Samsung Galaxy Tab A 10.1 (2016)." Searching for will direct you to a dedicated sub-forum containing thousands of posts.

In TWRP:

This is a known issue with the old Exynos driver blobs. Install a custom kernel like SparX or Aether found in the XDA Kernel section. Also, disable "Always On Display" if the ROM includes it. sm t580 xda