急！屏幕闪烁问题！

cwflying

一台HP服务器安装Redhat AS4，运行正常，关机，挪了一下位置后，再开机后屏幕一直闪烁，换了一台显示器还是一样，用system-config-display重新配置xorg.conf后，还是闪烁，无论是800*600还是1024*768都会闪烁。

这是当前的xorp.conf内容，系统诊测出显卡是ATI的显示器是Dell的，现在配置的是800*600模式（原先在这种模式下工作正常）：

# Xorg configuration created by system-config-display

Section "ServerLayout"
        Identifier     "single head configuration"
        Screen      0  "Screen0" 0 0
        InputDevice    "Mouse0" "CorePointer"
        InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

Section "Files"

# RgbPath is the location of the RGB database.  Note, this is the name of
the
# file minus the extension (like ".txt" or ".db").  There is normally
# no need to change the default.
# Multiple FontPath entries are allowed (they are concatenated together)
# By default, Red Hat 6.0 and later now use a font server independent of
# the X server to render fonts.
        RgbPath      "/usr/X11R6/lib/X11/rgb"
        FontPath     "unix/:7100"
EndSection

Section "Module"
        Load  "dbe"
        Load  "extmod"
        Load  "fbdevhw"
        Load  "glx"
        Load  "record"
        Load  "freetype"
        Load  "type1"
        Load  "dri"
EndSection

Section "InputDevice"

# Specify which keyboard LEDs can be user-controlled (eg, with xset(1))
#       Option  "Xleds"         "1 2 3"
# To disable the XKEYBOARD extension, uncomment XkbDisable.
#       Option  "XkbDisable"
# To customise the XKB settings to suit your keyboard, modify the
# lines below (which are the defaults).  For example, for a non-U.S.
# keyboard, you will probably want to use:
#       Option  "XkbModel"      "pc102"
# If you have a US Microsoft Natural keyboard, you can use:
#       Option  "XkbModel"      "microsoft"
#
# Then to change the language, change the Layout setting.
# For example, a german layout can be obtained with:
#       Option  "XkbLayout"     "de"
# or:
#       Option  "XkbLayout"     "de"
#       Option  "XkbVariant"    "nodeadkeys"
#
# If you'd like to switch the positions of your capslock and
# control keys, use:
#       Option  "XkbOptions"    "ctrl:swapcaps"
# Or if you just want both to be control, use:
#       Option  "XkbOptions"    "ctrl:nocaps"
#
        Identifier  "Keyboard0"
        Driver      "kbd"
        Option      "XkbModel" "pc105"
        Option      "XkbLayout" "us"
EndSection

Section "InputDevice"
        Identifier  "Mouse0"
        Driver      "mouse"
        Option      "rotocol" "IMPS/2"
        Option      "Device" "/dev/input/mice"
        Option      "ZAxisMapping" "4 5"
        Option      "Emulate3Buttons" "yes"
EndSection

Section "Monitor"
        Identifier   "Monitor0"
        VendorName   "Monitor Vendor"
        ModelName    "Dell E551c"
        DisplaySize  280        210
        HorizSync    30.0 - 54.0
        VertRefresh  50.0 - 120.0
        Option      "dpms"
EndSection

Section "Device"
        Identifier  "Videocard0"
        Driver      "ati"
        VendorName  "Videocard vendor"
        BoardName   "ATI Rage XL"
EndSection

Section "Screen"
        Identifier "Screen0"
        Device     "Videocard0"
        Monitor    "Monitor0"
        DefaultDepth     24
        SubSection "Display"
                Viewport   0 0
                Depth     24
                Modes    "800x600" "640x480"
        EndSubSection
        SubSection "Display"
                Viewport   0 0
                Depth     24
                Modes    "800x600" "640x480"
        EndSubSection
EndSection

Section "DRI"
        Group        0
        Mode         0666
EndSection

coolie

是分辨率的问题 用
用xvidtune调整你的显示器
引用:

大家会发现装了linux之后在windows下用的好好的显示器有时进到linux的xwindows里后就歪掉了，调整好之后回到windows后 windows的桌面也外调了，来回启动系统每次都要调整很麻烦的，这里介绍一个办法一劳永逸j进入linux启动x在xterm里执行 xvidtune,会弹出这个软件的窗口，点Auto然后点Left,Right等按钮调整你的显示器到最佳的位置，然后点界面上的Show按钮会得到类似这样的输出：

"1152x864" 121.50 1152 1232 1360 1568 864 865 868 911 +hsync -vsync

然后退出这个软件，修改你的/etc/X11/XF86Config-4文件在
Section "Monitor"
Identifier "AS 786T"
VendorName "Unknown"
ModelName "Unknown"
HorizSync 30 - 87
VertRefresh 50 - 160
Option "dpms"
EndSection
里加上刚才的输出，我的是：
Section "Monitor"
Identifier "AS 786T"
VendorName "Unknown"
ModelName "Unknown"
HorizSync 30 - 87
VertRefresh 50 - 160
Modeline "1152x864" 121.50 1152 1232 1360 1568 864 865 868 911 +hsync -vsync
Option "dpms"
EndSection
保存然后重起试试

cwflying

谢谢楼上的答复，但我执行xvidtune后缺出现错误提示：
Xlib:  extension "XFree86-VidModeExtension" missing on display ":1.0".
Unable to query video extension version