Hello!
The problem suddenly popped up from yesterday on the RPi4, and when running `startx`, it complainted as
```
(EE)
(EE) Backtrace:
xinit: giving up
xinit: unable to conect to X server: Connection refused
xinit l server error
```
I cleaned up everything in `xinitrc` except `exec dwm`, as well as re-installed the entire system, but the problem remains.. I wonder if there is a new kernel release for armv7l or package upgrade that interferes with it. Thanks for your help!