感謝各位指正我錯誤的印象。
現在想想兩年前試用時，
Ubuntu 就可以另外安裝顯示卡驅動程式了。

現在想起來為什麼會有這印象了。
以前試著裝 ATI 的官方驅動，
找到下面的說明。
現在還是不清楚為什麼新版的 Linux 要放棄支援？
那時有查了一下 kernel 的 change log，
驅動程式的格式好像也什麼變化。


http://bit.ly/11JPJes
Linux driver - Proprietary

The last version of fglrx to support this chipset is 8.28.8 (released 2006-08-18), later versions do not support this chipset anymore. This version is still available for download, but does not support kernels newer then 2.6.17. This proprietary driver has 3D acceleration support, but you might find that current opensource radeon driver does just as well.