Infinite login loop on Ubuntu16.04(kernel 4.15) after nvidia driver 430.50 ver

Hi, I am using thinkpad P53 with Quadro T2000. This gpu is compatible with nvidia 430.50 driver. So, I downloaded it and installed it by official nvidia procedures. But, I was stuck in infinite login loop.
I already did a lot of ways which I can search for on google. But, anything didn’t work.
Can anyone give me solutions?