redflag6.5 startx出错

以下为报错信息：
（==）log file :"/var/log/Xorg.0.log"
(==)using config file :"/etc/X11/xorg.conf"
(II)modual alreally build-in
(EE)VESA(0):no matching modes
(EE)screens found, but none have a usable configuration
fatal server error:
no screens found
XI0: fatal I0 error 104 (connection reset by peer)on X server":0.0"
after 0 requests(0 known processed)with 0 events remaining
尝试过重装，did not work
dpkg-reconfigure ,no command
Xf86config, no command
所以不能配置。。。
usr目录下出现了X11R6觉得软件是安装上了的，
请问还有什么办法？请指点下。。。
三星的笔记本R18 ati 显卡驱动。。。
认为是mode 1280x800的问题，但不知怎么改