Screen shakes at higher resolutions
Hello,
I've been having this problem for quite some time and I've posted questions looking for some answers, but this has never been resolved. I am running Fedore Core with an NVIDIA GeForce2 32M graphics card with a SONY CDP200ES 17" monitor. The max res on this monitor should be 1280 x 1024. I am pretty sure I have the video card set up right (I get a nice NVIDIA splash screen these days). My problem is that I cannot set the monitor res higher than 1024x768. If I do, the screen starts shaking. Not too much, but enough to seriously annoy. I want to have the resolution at at 1152x864. Here is my XF86Config file when the shaking starts: # XFree86 4 configuration created by redhat-config-xfree86 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" 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 "keyboard" Option "XkbRules" "xfree86" Option "XkbModel" "pc105" Option "XkbLayout" "us" EndSection Section "InputDevice" Identifier "Mouse0" Driver "mouse" Option "Protocol" "IMPS/2" Option "Device" "/dev/input/mice" Option "ZAxisMapping" "4 5" Option "Emulate3Buttons" "no" EndSection Section "InputDevice" # If the normal CorePointer mouse is not a USB mouse then # this input device can be used in AlwaysCore mode to let you # also use USB mice at the same time. Identifier "DevInputMice" Driver "mouse" Option "Protocol" "IMPS/2" Option "Device" "/dev/input/mice" Option "ZAxisMapping" "4 5" Option "Emulate3Buttons" "no" EndSection Section "Monitor" Identifier "Monitor0" VendorName "Monitor Vendor" ModelName "Sony CPD-200ES" DisplaySize 330 240 HorizSync 30.0 - 70.0 VertRefresh 50.0 - 120.0 Option "dpms" EndSection Section "Device" Identifier "Videocard0" Driver "nvidia" VendorName "Videocard vendor" BoardName "NVIDIA GeForce 2 MX (generic)" EndSection Section "Screen" Identifier "Screen0" Device "Videocard0" Monitor "Monitor0" DefaultDepth 24 SubSection "Display" Depth 24 Modes "1152x864" "1024x768" "800x600" "640x480" EndSubSection EndSection Section "DRI" Group 0 Mode 0666 EndSection If I set the res at 1024x768, there is no shaking and the XF86Config file looks the same except for the fact that 1152x864 is missing. Any thoughts on how I can make the 1152x864 resolution work? Thanks in advance for any advice . . . |
Short answer: Aint gonna happen. No linux setting is gonna fix this.
Long answer: Two (well three actually) things can cause the problem you are seeing. 1) Your video card may be defective. If it is putting out a bad signal, then there's nothing you can do. Doesn't happen often but... 2) Most likely you have a sh*ty cheap @ss video cable between your monitor and your box. If this is NOT the case then you have an enormous amount of interference... so the cable, though not sh*ty, is still not good enough. (Having a switchbox or extender contributes to this as well). 3) You may be running at a low refresh rate. High res @ 60hz will present the appearance of shaking. My money is on (2) -landrew the :newbie: |
Have you tried messing with your refresh frequency at all? I know that Fedora has an easy to use gui tool to change the resolution/refresh rate in its "fedora menu" somewhere.
Also, is the shaking bad? Sometimes electrical appliances will interfere with monitors. A fan or something like that too close to a monitor will cause the display to shake. |
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