[mythtv-users] Stuttery / jerky DVD playback
Bruce Taber
brutab at verizon.net
Tue Jun 12 10:27:55 UTC 2007
Michelle Dupuis wrote:
> I'm running Myth .20 fixes - all functions seem to operate. I've have a
> problem when I playback a DVD, the video (in MythTV) is jerky / stuttery.
>
> I've had this problem since I started with Myth 3 weeks ago. I've played
> with every conceivable setting to no avail.
>
> I have an ATI X1600 running on Linux 2.6.18 FC6, with ATI's latest drivers
> 8.37.6. There are no errors in the xorg.0.log file, and ATI's fglrx drivers
> are reported in fglrxinfo (for regular graphics and OpenGL too). Overall
> graphics look good (and glxgears looks good).
>
> I'm stuck...I just can't figure this out. Ideas anyone? Is it:
>
> 1. ATI driver bug (seems unlikely)
> 2. Myth misconfiguration
> 3. X misconfiguration (see my xorg.conf below)
>
> HELP!!
>
> Thanks,
> MD
>
> Section "ServerLayout"
> Identifier "Multihead layout"
> Screen 0 "aticonfig-Screen[0]" 0 0
> InputDevice "Keyboard0" "CoreKeyboard"
> InputDevice "TKPANEL" "SendCoreEvents"
> EndSection
>
> Section "Files"
> ModulePath "/usr/lib/xorg/modules"
> EndSection
>
> Section "Module"
> Load "dbe" # Double buffering
> Load "vnc"
> Load "extmod"
> Load "glx"
> Load "dri"
> EndSection
>
> Section "DRI"
> Group 0
> Mode 0666
> EndSection
>
> # ATI does not support composite, so disable
> Section "Extensions"
> Option "Composite" "disable"
> EndSection
>
> Section "ServerFlags"
> # Next line is to prevent error AIGLX error: dlsym for
> __driCreateNewScreen_20050727 failed
> Option "AIGLX" "off"
> EndSection
>
> Section "InputDevice"
> Identifier "Keyboard0"
> Driver "kbd"
> Option "XkbModel" "pc105"
> Option "XkbLayout" "us"
> EndSection
>
> Section "Monitor"
> Identifier "aticonfig-Monitor[0]"
> Option "VendorName" "Sony"
> Option "ModelName" "VPL-HS51"
> Option "DPMS" "true"
> Modeline "1280x720_75" 74.48 1280 1336 1472 1664 720 721 724
> 746 +hsync
> Modeline "1280x720_60" 60.46 1280 1328 1456 1632 720 721 724
> 741 +hsync
> EndSection
>
> Section "Monitor"
> Identifier "aticonfig-Monitor[1]"
> Option "VendorName" "SilverstoneTek"
> Option "ModelName" "Internal Monitor"
> Option "DPMS" "true"
> Modeline "1280x720_75" 74.48 1280 1336 1472 1664 720 721 724
> 746 +hsync
> Modeline "1280x720_60" 60.46 1280 1328 1456 1632 720 721 724
> 741 +hsync
> EndSection
>
> Section "Device"
> Identifier "aticonfig-Device[0]"
> Driver "fglrx"
> BusID "PCI:6:0:0"
> Screen 0
> Option "DesktopSetup" "clone"
> Option "UseInternalAGPGART" "no"
> Option "KernelModuleParm" "agplock=0"
> EndSection
>
> Section "Device"
> Identifier "aticonfig-Device[1]"
> Driver "fglrx"
> BusID "PCI:6:0:1"
> Screen 1
> Option "VideoOverlay" "on"
> Option "OpenGLOverlay" "off"
> Option "DesktopSetup" "clone"
> Option "UseInternalAGPGART" "no"
> Option "KernelModuleParm" "agplock=0"
> EndSection
>
> Section "Screen"
> Identifier "aticonfig-Screen[0]"
> Device "aticonfig-Device[0]"
> Monitor "aticonfig-Monitor[0]"
> DefaultDepth 24
> SubSection "Display"
> Viewport 0 0
> Depth 24
> Modes "1280x720_75" "1280x720_60"
> EndSubSection
> Option "PasswordFile" "/home/mythtv/.vnc/passwd"
> EndSection
>
> Section "Screen"
> Identifier "aticonfig-Screen[1]"
> Device "aticonfig-Device[1]"
> Monitor "aticonfig-Monitor[1]"
> DefaultDepth 24
> SubSection "Display"
> Viewport 0 0
> Depth 24
> Modes "1280x720_75" "1280x720_60"
> EndSubSection
> Option "PasswordFile" "/home/mythtv/.vnc/passwd"
> EndSection
>
> ## TouchKit section begin (Please do NOT edit this section!!) ##
> Section "InputDevice"
> Identifier "TKPANEL"
> Driver "touchkit"
> Option "Device" "/dev/tkdat0"
> Option "DebugLevel" "0"
> EndSection
> ## TouchKit section end ##
>
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>
>
Are you running the frontend with one of the XvMC settings in the TV
playback screen? If so, try setting it to a standard setting and try
your DVD then. I've just had two systems exhibit this same problem.
Bruce
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