I installed Arch Linux on my Thinkpad T420. My display manager is LightDM and my window manager is DWM.

I had a problem where DWM and LightDM were not at the correct resolution. I initially fixed this by reinstalling xf86-input-libinput and xf86-video-intel.

However, I ha e this issue again, and reinstalling my drivers does NOT fix it. Why is this happening and how do I fix it?

Also, running xrandr gives me: xrandr: output LVDS1 cannot use rotation "normal" reflection "none"