samsung sucks at coding framebuffer driver, that's what caused display corruption in old s7580 kernel and now deadlock
i9060 kernel seem have more performance than ours, they have some new driver version so I think we could use new i9060 will fix both screen corruption and give us more performance, just sent them request about i9060 sea variant, after I got it then i'll build kernel for you guys to test if deadlock or such thing still happens