为何我的X启动的时候很慢?

我的显卡是ATI 128 Ultra PRO，不知道为何启动X的时候很慢，
开始的时候选ATI更不不能启动X，只能用VESA（也很慢），
不能用ATI，今天又从新佩了一下X，莫名其妙的用ATI能启动
X了，但是也很慢，不知道是啥原因？
另外附上我的XF86Config-4

Section "Files"
FontPath "unix/:7100" # local font server
# if the local font server has problems, we can fall back on these
FontPath "/usr/lib/X11/fonts/Type1"
# FontPath "/usr/lib/X11/fonts/CID"
FontPath "/usr/lib/X11/fonts/Speedo"
FontPath "/usr/lib/X11/fonts/misc"
# FontPath "/usr/lib/X11/fonts/cyrillic"
FontPath "/usr/lib/X11/fonts/100dpi"
FontPath "/usr/lib/X11/fonts/75dpi"
EndSection

Section "Module"
Load "GLcore"
Load "bitmap"
Load "dbe"
Load "ddc"
# Load "dri"
Load "extmod"
Load "glx"
Load "int10"
Load "record"
Load "speedo"
Load "type1"
# Load "vbe"
Load "xtt"
EndSection

Section "InputDevice"
Identifier "Generic Keyboard"
Driver "keyboard"
Option "CoreKeyboard"
Option "XkbRules" "xfree86"
Option "XkbModel" "pc104"
Option "XkbLayout" "us"
EndSection

Section "InputDevice"
Identifier "Configured Mouse"
Driver "mouse"
Option "CorePointer"
Option "Device" "/d Option "Protocol" "ImPS/2"
Option "Emulate3Buttons" "true"
Option "ZAxisMapping" "4 5"
EndSection
Section "InputDevice"
Identifier "Generic Mouse"
Driver "mouse"
Option "SendCoreEvents" "true"
Option "Device" "/dev/input/mice"
Option "Protocol" "ImPS/2"
Option "Emulate3Buttons" "true"
Option "ZAxisMapping" "4 5"
EndSection

Section "Device"
Identifier "Generic Video Card"
Driver "ati"
EndSection

Section "Monitor"
Identifier "Generic Monitor"
HorizSync 31-60
VertRefresh 56-75
Option "DPMS"
EndSection

Section "Screen"
Identifier "Default Screen"
Device "Generic Video Card"
Monitor "Generic Monitor"
DefaultDepth 24
SubSection "Display"
Depth 1
Modes "1024x768"
EndSubSection
SubSection "Display"
Depth 4
Modes "1024x768"
EndSubSection
SubSection "Display"
Depth 8
Modes "1024x768"
EndSubSection SubSection "Display"
Depth 15
Modes "1024x768"
EndSubSection
SubSection "Display"
Depth 16
Modes "1024x768"
EndSubSection
SubSection "Display"
Depth 24
Modes "1024x768"
EndSubSection
EndSection

Section "ServerLayout"
Identifier "Default Layout"
Screen "Default Screen"
InputDevice "Generic Keyboard"
InputDevice "Configured Mouse"
InputDevice "Generic Mouse"
EndSection

Section "DRI"
Mode 0666
EndSection

### END DEBCONF SECTION

忘了问了，怎么样将chinput在启动X的时候也一起启动压？
我在.xsession中加exec chinput怎么不行呀？谢谢

能不能把.Xsession贴出来?我的如下

LANG=zh_CN.GB2312
LANGUAGE=zh_CN.GB2312
LC_ALL=zh_CN.GB2312
LC_CTYPE=zh_CN.GB2312
KDE_LANG=zh_CN.GB2312
export LANG LC_ALL LC_CTYPE KDE_LANG LANGUAGE
exec fcitx &
exec wmaker
killall fcitx

.xsessioin
LANG=zh_CN.GB2312
LC_ALL=zh_CN.GB2312
#LC_CTYPE=zh_CN.GB2312
export LANG LC_ALL
#export LC_CTYPE
#exec gnome-session
/usr/bin/chinput &
我以为.xsession应当是.Xsession,但是我改成.Xsession后还是不行.

这个。。。我怎么找不到这个文件呢。自己写的吗？

在登陆用户的HOME目录下，一般是自己编辑的。