安装好Ubuntu 9.10系统后第一件事就是更新，不管多慢都先从官方源更新一次。
接着就是更新语言包，9.10默认的中文语言包是不全的，所以必须要更新完整的语言包才可以显示出全部的中文。
为Ubuntu 9.10更换国内源
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$ sudo cp /etc/apt/sources.list /etc/apt/sources.list.save
$ sudo gedit /etc/apt/sources.list
将以下内容替换原有内容
#cn99源
deb karmic main restricted universe multiverse
deb karmic-backports restricted universe multiverse
deb karmic-proposed main restricted universe multiverse
deb karmic-security main restricted universe multiverse
deb karmic-updates main restricted universe multiverse
deb-src karmic main restricted universe multiverse
deb-src karmic-backports main restricted universe multiverse
deb-src karmic-proposed main restricted universe multiverse
deb-src karmic-security main restricted universe multiverse
deb-src karmic-updates main restricted universe multiverse
安装显卡驱动
安装显卡驱动之前需要先安装 no-backfill, 以解决ATI显卡闭源驱动最大化卡延迟问题。
先把它加到源中
#no-backfill
deb karmic main
deb-src karmic main
导入key
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$ sudo apt-key adv --recv-keys --keyserver keyserver.ubuntu.com DBDD06BF16E70E3E
更新
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$ sudo apt-get update
$ sudo apt-get upgrade
先不要重启，继续安装显卡驱动！