ubuntu startup执行xmodmap问题

Question

测试了一下，发现startup applications里写

xmodmap /home/$USER/.Xmodmap

没有用，只有写成

/bin/bash -c "sleep 20; /usr/bin/xmodmap /home/$USER/.Xmodmap"

才能生效。请问是为什么？

PS：版本是14.04

Answer 1

1. Delayed startup
   Because it is useless to execute xmodmap when X Window is not fully started. Therefore, under delayed startup, wait until X Window is fully started before executing.