求助 ：cirrus logic 5480 分辨率设置

[sghny]

单位有台服务器退下来了，个人想装个ubuntu 玩玩， 8.04，cirrus logic gd5480 4m 集成显卡，系统能认出显卡，也有 cirrus logic 54XX 系统的驱动，但就是分辨率最高只能设在800x600 ,无法高为1024x768，，以前用windows 时可用1024
,google 了一下，http://ubuntuforums.org/showthread.php?t=576389 ，老外有这样一个贴子
Friends.

I have Cirrus Logic GD 5480 video card.
P III PRocessor.
256 RAM.
Kubuntu 7.04


I get only 800x600 Resolution.

I tried with various monitors.
15" Samtron,LG monotors
19" LG monitor.

I tried with various settings using kde system settings->Display and monitor.

Please help me get 1024x768 Resolution.

Thanks,
T.Shrinivasan
各位达人，怎样来个1024x768,,