关于fluxbox无法开启透明效果原因

I've set a transparency value, but nothing is transparent?!

Here are some things to check:

1. You must be running a Fluxbox version 0.9.2 or newer. 0.1.x does not contain transparency support.
2. Fluxbox must be restarted for changes in the alpha value to take effect (just choose restart in the menu).
3. You need to have the XRender extension enabled in X, and compiled into fluxbox. Running fluxbox -i and xdpyinfo | grep RENDER should both say "RENDER".
4. You must have set the background with an XRender-compatible tool. fbsetbg comes with fluxbox and tries to make this easy for you, try it (the web page also has list of transparency supporting background tools). Run fbsetbg -i to see if it can find a suitable tool.

所以安装feh，之后重新fbsetbg设置壁纸即可了。