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Thread: Video playback fractures

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  1. #1
    Join Date
    Feb 2008
    Location
    Brussels
    Beans
    54
    Distro
    Ubuntu 9.04 Jaunty Jackalope

    Video playback fractures

    Hi,
    I'm having video 'fractures' as horizontal lines when I play any video file
    I'm using gutsy, and the nvidia-glx driver.
    What should I do ?
    Last edited by Adnanius; May 19th, 2008 at 12:11 AM.

  2. #2
    Join Date
    Feb 2007
    Beans
    2,339
    Distro
    Ubuntu 10.04 Lucid Lynx

    Re: Video playback fractures

    This will not be a 100% fix, but it might help minimize the artifacts. Run nvidia-settings, enable all checkboxes with "Sync to Vblank".

    Alternatively, you might want to disable compiz, if video picture quality is of utmost importance.

  3. #3
    Join Date
    Feb 2008
    Location
    Brussels
    Beans
    54
    Distro
    Ubuntu 9.04 Jaunty Jackalope

    Re: Video playback fractures

    Hi,
    Actually I'm using the nvidia-glx driver, so I believe I cant use the nvidia-settings package. Is this something doable by editing xorg ?
    I tried different resolutions and different refresh rates (actually, there was one refresh rate available for every resolution in the System>Preferences>Screen Resolution Preferences: 50 for 1280x800 which I use). Same problem.
    This is my xorg.conf:
    Code:
    # xorg.conf (xorg X Window System server configuration file)
    #
    # This file was generated by dexconf, the Debian X Configuration tool, using
    # values from the debconf database.
    #
    # Edit this file with caution, and see the xorg.conf manual page.
    # (Type "man xorg.conf" at the shell prompt.)
    #
    # This file is automatically updated on xserver-xorg package upgrades *only*
    # if it has not been modified since the last upgrade of the xserver-xorg
    # package.
    #
    # If you have edited this file but would like it to be automatically updated
    # again, run the following command:
    #   sudo dpkg-reconfigure -phigh xserver-xorg
    
    Section "Files"
    EndSection
    
    Section "InputDevice"
    	Identifier	"Generic Keyboard"
    	Driver		"kbd"
    	Option		"CoreKeyboard"
    	Option		"XkbRules"	"xorg"
    	Option		"XkbModel"	"pc105"
    	Option		"XkbLayout"	"fr"
    EndSection
    
    Section "InputDevice"
    	Identifier	"Configured Mouse"
    	Driver		"mouse"
    	Option		"CorePointer"
    	Option		"Device"	"/dev/input/mice"
    	Option		"Protocol"	"ImPS/2"
    	Option		"ZAxisMapping"	"4 5"
    EndSection
    
    Section "InputDevice"
    	Identifier	"Synaptics Touchpad"
    	Driver		"synaptics"
    	Option		"SendCoreEvents"	"true"
    	Option		"Device"	"/dev/psaux"
    	Option		"Protocol"	"auto-dev"
    	Option		"HorizEdgeScroll"	"0"
    EndSection
    
    Section "InputDevice"
    	Driver		"wacom"
    	Identifier	"stylus"
    	Option		"Device"	"/dev/input/wacom"
    	Option		"Type"	"stylus"
    	Option		"ForceDevice"	"ISDV4"# Tablet PC ONLY
    EndSection
    
    Section "InputDevice"
    	Driver		"wacom"
    	Identifier	"eraser"
    	Option		"Device"	"/dev/input/wacom"
    	Option		"Type"	"eraser"
    	Option		"ForceDevice"	"ISDV4"# Tablet PC ONLY
    EndSection
    
    Section "InputDevice"
    	Driver		"wacom"
    	Identifier	"cursor"
    	Option		"Device"	"/dev/input/wacom"
    	Option		"Type"	"cursor"
    	Option		"ForceDevice"	"ISDV4"# Tablet PC ONLY
    EndSection
    
    Section "Device"
    	Identifier	"nVidia Corporation NV17 [GeForce4 440 Go 64M]"
    	Driver		"nvidia"
    	Busid		"PCI:1:0:0"
    	Option		"AddARGBVisuals"	"True"
    	Option		"AddARGBGLXVisuals"	"True"
    	Option		"NoLogo"	"True"
    EndSection
    
    Section "Monitor"
    	Identifier	"Generic Monitor"
    	Option		"DPMS"
    	Horizsync	28-50
    	Vertrefresh	43-75
    EndSection
    
    Section "Screen"
    	Identifier	"Default Screen"
    	Device		"nVidia Corporation NV17 [GeForce4 440 Go 64M]"
    	Monitor		"Generic Monitor"
    	Defaultdepth	24
    	SubSection "Display"
    		Modes		"1280x800"
    	EndSubSection
    EndSection
    
    Section "ServerLayout"
    	Identifier	"Default Layout"
      screen "Default Screen"
    	Inputdevice	"Generic Keyboard"
    	Inputdevice	"Configured Mouse"
    	
    	# Uncomment if you have a wacom tablet
    	#	InputDevice     "stylus"	"SendCoreEvents"
    	#	InputDevice     "cursor"	"SendCoreEvents"
    	#	InputDevice     "eraser"	"SendCoreEvents"
    	Inputdevice	"Synaptics Touchpad"
    EndSection
    Last edited by Adnanius; May 19th, 2008 at 06:17 PM.

  4. #4
    Join Date
    Feb 2007
    Beans
    2,339
    Distro
    Ubuntu 10.04 Lucid Lynx

    Re: Video playback fractures

    Not sure about not being able to use nvidia-settings with nvidia-glx driver: I will take your word for it.

    You can disable dynamic twinview. This way, nvidia driver will report the correct refresh rate to xrandr. Then, enable "Sync to Vblank" in CCSM (compizconfig-settings-manager).

    Link here, see the explanation under the Dynamic Twinview section:
    http://us.download.nvidia.com/XFree8...hapter-13.html


    .

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