升級到Ubuntu 9.04後系統信息裡看版本就變了（見上圖）
版本9.04(jaunty)
內核為Linux 2.6.27.7-generic
GNOME 2.24.1
已經有升級到Ubuntu 9.04的源，是從Ubuntu 8.10升上去的，有人就是牛，具體方法可看下面。
Ubuntu 9.04的Linux內核為2.6.27.7，你應該有意識才能進行下面的操作。
運行sudo gedit /etc/apt/sources.list
加入更新源
deb http://archive.ubuntu.com/ubuntu/ jaunty main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ jaunty-security main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ jaunty-updates main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ jaunty-proposed main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ jaunty-backports main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ jaunty main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ jaunty-security main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ jaunty-updates main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ jaunty-proposed main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ jaunty-backports main restricted universe multiverse
想打先鋒的就上。
已經升級到Ubuntu 9.04測試版的報告一下，你們用的正常嗎？預祝下一代Ubuntu 9.04更強大，把Windows與蘋果通通都打敗！
