[mythtv-users] Live TV - Prebuffering Pause

[Dave Pearson]

Can Anyone help?

I have a frontend running under Mandriva 2006 - installed with the plf RPM's. 
The frontend hardware is:

Pentium 4 3.0GHz
1Gb RAM
NVidia FX5500 (Using the nvidia 7676 driver)
2 x Digimate 19" TFT Displays

The Backend hardware is:

AMD Sempron 2500
1Gb RAM
1 x Avermedia DVB-T
1 x Hauppauge PVR-250
1 x Twinhan DVB-T

Mythtv version is 18.1

My problem is that when I try and watch Live TV from the PVR-250 (Composite 
and Tuner input) or from the Avermedia Composite input, I get constant 
prebuffering pauses. Live TV from the DVB Cards plays back OK and recorded TV 
from any source is OK. If I watch from my Dell Inspiron 6000 (via wireless 
network) I don't have any pauses. If I reconfigure X to use the nv driver (on 
a single monitor) playback is perfect. I have tried all sorts of combinations 
of the various playback settings, but nothing seems to help (most of the time 
I end up with the frontend crashing). I have also tried swapping the card for 
an ATI Radeon 9200SE, but this has the same problem with the manufacturers 
drivers and dual head (it works fine with the ati driver and single head).

Any help will be gratefully received, I have attached the twinview xorg.conf

Regards,
Dave.
-------------- next part --------------
##################################################################
#                      X Configuration File                      #
#         Created by YanC42 0.0.9 (14-01-2006 17:17:47)          #
#               (c) 2002-2005 by Sebastian J. Wolf               #
#        Licensed under GNU General Public License (GPL)         #
#     http://yanc.ygriega.de/ - http://yanc.sourceforge.net/     #
##################################################################

Section "Files"
	FontPath	"unix/:-1"
EndSection


Section "Module"
#	Load	"GLcore"
	Load    "v4l"
	Load	"i2c"
	Load	"bitmap"
	Load	"ddc"
	Load	"dri"
	Load	"extmod"
	Load	"freetype"
	Load	"/usr/X11R6/lib/modules/extensions/nvidia/libglx.so"
	Load	"int10"
	Load	"type1"
	Load	"vbe"
	Load    "fbdevhw"
	Load    "dbe"
	Load    "record"
EndSection


Section "InputDevice"
	Identifier	"Generic Keyboard"
	Driver		"kbd"
	Option		"CoreKeyboard"
	Option		"XkbRules"	"xorg"
	Option		"XkbModel"	"pc105"
	Option		"XkbLayout"	"gb"
EndSection


Section "InputDevice"
	Identifier	"Configured Mouse"
	Driver		"mouse"
	Option		"CorePointer"
	Option		"Device"		"/dev/mouse"
	Option		"Protocol"		"ExplorerPS/2"
#	Option		"Emulate3Buttons"	"true"
	Option		"ZAxisMapping"		"6 7"
EndSection


Section "Device"
	Identifier	"Primary"
	Driver		"nvidia"
	Option		"DPMS"
	BusID		"PCI:1:0:0"
	Option		"ConnectedMonitor" "crt,dfp"
	Option		"HWCursor" "On"
	Option		"NvAGP" "3"
#	Screen		0
	Option 		"TwinView" "1"
	Option 		"MetaModes" "CRT-0: 1280x1024, DFP-0: 1280x1024"
	Option		"HorizSync" "CRT-0: 50-100; DFP-0 28-64"
	Option		"VertRefresh" "CRT-0: 43-70; DFP-0 43-64"
	Option 		"TwinViewOrientation" "RightOf"
	Option		"XvmcUsesTextures" "true"
	Option		"RandRRotation" "1"
	Option		"UseEdidFreqs" "1"
EndSection


Section "Monitor"
	Identifier	"Monitor0"
	HorizSync	28-64
	VertRefresh	43-60
EndSection

Section "Screen"
	Identifier	"Screen0"
	Device		"Primary"
	Monitor		"Monitor0"
	DefaultDepth	24
	SubSection "Display"
		Depth		24
Modes "1280x1024" "1024x768" 
	EndSubSection
EndSection

Section "ServerLayout"
	Identifier	"Default Layout"
	Screen 0	"Screen0"
	InputDevice	"Generic Keyboard"
	InputDevice	"Configured Mouse"
EndSection


Section "DRI"
	Mode	0666
EndSection