edit tab does not enable perspective distortion

[wlima.ui]

function is disabled in the tab all the time it happened to someone, help!

[Semaphoric]

Look in Edit > Preferences > Performance, upper right. Is your graphics processor identified by name? Also, what Operating System are you running?

[JJMack]

If you mean  Transform Perspective make sure Photoshop current target can be transformed. If you meant  Perspective Warp make sure your GPU is detected and enabled in Photoshop Preferences Performance section.