Running programs that require an X environment

filburt1

I'm trying to use khtml2png, which requires an X server to connect to. I have it successfully installed, but that means several things:

If I run it inside a terminal within Gnome (over VNC), it works. That's because Gnome is connected to an X server; in this case, VNC.
If I use vncserver to start a VNC server over SSH, then run khtml2png with that display specified, it works. This is from a normal user account. I have to set up the server and run khtml2png as the same user.
If I set up the VNC server like above, then run a PHP script through Apache (which runs as the user "wwwrun" apparently), then khtml2png it won't be allowed access to the display because it didn't create it or it isn't the owner:
```
Xlib: connection to ":3.0" refused by server
Xlib: No protocol specified

khtml2png: cannot connect to X server :3
```

So, how can I run khtml2png, which requires X, via PHP, which itself runs as "wwwrun?"

This is my own home development server. I have root access if need be.

MarkR

It may be that you have X authentication enabled.

Assuming you're on a secure network and/or have a firewall blocking connections from unauthorised places, try putting

xhost +

In some script which gets run after X server startup (e.g. .Xsession)

This will disable X authentication, allowing a connection from anyone, anywhere (provided they can get past the firewall).

If it's using a Unix socket, you might also want to look at its permissions (although they should general be everyone-everything). The socket is probably in /tmp/.X11-unix/

Mark