[mythtv-users] Finally the end of screen tearing on Nvidia

[Richard Ginsberg]

My first setup of MythTV 0.11 back in August had
massive screen tearing and flicker on my system:

Shuttle SN41G2(Nforce2 - Gforce4 MX) 
Athlon2500+ 
512MB RAM 
Mandrake 9.1 
custom 2.4.22 kernel
S-Video out to Sony WEGA
PVR250
NTSC 720x480, 4500 - 6000kbps max

80% of the tearing went away with the installation of
the Nvidia 4363 drivers and jitter reduction. However,
there was still a little screen tearing on horizontal
panning. I disabled Twinview in XFconfig-4 and now
have a perfect image. It also happened to fix the
problem switching back to console. The only caveat was
that i got a green spotted line on the bottom of Live
TV and recorded programs(didn't affect DVD or
Mythvideo) This was easily solved by bring down the
screen by a factor of (-2). BTW, running Mythtv 0.14
now. Attached is my config

Rich


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-------------- next part --------------
# File generated by XFdrake.

# **********************************************************************
# Refer to the XF86Config man page for details about the format of
# this file.
# **********************************************************************

Section "Files"
    # Multiple FontPath entries are allowed (they are concatenated together)
    # By default, Mandrake 6.0 and later now use a font server independent of
    # the X server to render fonts.
    FontPath "unix/:-1"
EndSection

Section "ServerFlags"
    #DontZap # disable <Crtl><Alt><BS> (server abort)
    #DontZoom # disable <Crtl><Alt><KP_+>/<KP_-> (resolution switching)
    AllowMouseOpenFail # allows the server to start up even if the mouse doesn't work
    Option "NoPM" "true
    Option "BlankTime" "0"
EndSection

Section "Module"
    Load "dbe" # Double-Buffering Extension
    Load "v4l" # Video for Linux
    Load "extmod"
    Load "type1"
    Load "freetype"
    Load "glx" # 3D layer
EndSection

Section "InputDevice"
    Identifier "Keyboard1"
    Driver "Keyboard"
    Option "XkbModel" "pc105"
    Option "XkbLayout" "us"
    Option "XkbCompat" ""
    Option "XkbOptions" ""
EndSection

Section "InputDevice"
    Identifier "Mouse1"
    Driver "mouse"
    Option "Protocol" "PS/2"
    Option "Device" "/dev/psaux"
    Option "Emulate3Buttons"
    Option "Emulate3Timeout" "50"
EndSection

Section "Monitor"
    Identifier "TV"
    VendorName "Sony"
    ModelName "Sony WEGA TV"
    HorizSync 30.0-50.0
    VertRefresh 60.0-60.0
EndSection

Section "Device"
    Identifier "device1"
    VendorName "Nvidia Corporation"
    BoardName "NVIDIA GeForce4 (generic)"
    Driver "nvidia"
    Option "MetaModes" "800x600,800x600"
    Option "TVStandard" "NTSC-M"
    Option "NoLogo" "1"
    Option "ConnectedMonitor" "TV"
    Option "TwinView" "0" 
    Option "TVOverScan" "0.6"
    Option "TVOutFormat" "SVIDEO"
    Option "DigitalVibrance" "0"
EndSection

Section "Screen"
    Identifier "screen1"
    Device "device1"
    Monitor "TV" 
    DefaultColorDepth 24
    
    Subsection "Display"
        Depth 8
        Modes "1024x768" "800x600" "640x480"
    EndSubsection
    
    Subsection "Display"
        Depth 15
        Modes "1024x768" "800x600" "640x480"
    EndSubsection
    
    Subsection "Display"
        Depth 16
        Modes "1024x768" "800x600" "640x480"
    EndSubsection
    
    Subsection "Display"
        Depth 24
        Modes "1024x768" "800x600" "640x480"
    EndSubsection
EndSection

Section "ServerLayout"
    Identifier "layout1"
    InputDevice "Keyboard1" "CoreKeyboard"
    InputDevice "Mouse1" "CorePointer"
    Screen "screen1"
EndSection