[mythtv-users] Plasma, UK SD and HD seperate modes
David Knight
dlknight at sdf.lonestar.org
Sat Oct 24 21:25:33 UTC 2009
You may recall I picked up on the recent thread about settings for a
Plasma TV and realised that my own settings may not be optimal.
I am using a Panasonic TH-42PX80B which is now connected via HDMI -> DVI
(8500 GT in Mythtv PC).
After doing some searching on gossamer-threads I reset my xorg.conf back
to default by renaming the existing file and then running nvidia-xconfig
as root in init level 3. I had to add in some existing settings such as my
saved EDID file (otherwise video card defaults to VGA if Plasma is turned
off). I also pinched some of Jean's xorg.conf (thanks Jean)
After reading some of Jean's messages with interest I decided to try and
let Myth change the video modes for me. However I have had mixed success.
I have found that outputting to the Plasma at 1920x1080 (50Hz) gives me
the best picture quality for HD and SD looks better than it does if I were
to output it at 576p.
If I set xorg.conf to default to a 60Hz mode (1920x1080_60) and then watch
a 50Hz recording Myth switches video mode to 1920x1080_50 which is great.
But if I watch a SD recording (720x576) I can't get myth to switch
resolution although it will change the refresh rate. Is this expected? I
read some messages which seemed to suggest that resolution could not be
changed only refresh rate?
In Mythtv>Utilities/Setup>Setup>Appearence>Video Mode Settings,
Use Seperate Mode for GUI and Playback is selected with the following
options:
GUI=1920x1080, Video Output=1920x1080, Rate=Any, Aspect=Default
Overrides for specific video sizes:
X,Y | Output | Rate | Aspect
------------------------------------
1280x720 | 1280x720 | Any | Default
720x576 | 720x576 | Any | Default
Here is my new xorg.conf:
# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig: version 1.0 (buildmeister at builder62) Wed Jul 22
16:45:17 PDT 2009
Section "ServerLayout"
Identifier "Layout0"
Screen 0 "Screen0"
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Mouse0" "CorePointer"
EndSection
Section "Module"
Load "glx"
Load "v4l"
EndSection
# To prevent tearing with VDPAU
Section "Extensions"
Option "Composite" "Disable"
EndSection
Section "Files"
FontPath "/usr/share/fonts/default/Type1"
EndSection
Section "InputDevice"
# generated from default
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/input/mice"
Option "Emulate3Buttons" "no"
Option "ZAxisMapping" "4 5"
EndSection
Section "InputDevice"
# generated from data in "/etc/sysconfig/keyboard"
Identifier "Keyboard0"
Driver "kbd"
Option "XkbLayout" "gb"
Option "XkbModel" "pc105"
EndSection
Section "Monitor"
Identifier "Monitor0"
VendorName "Unknown"
ModelName "Unknown"
HorizSync 28.0 - 33.0
VertRefresh 43.0 - 72.0
Option "DPMS"
Option "ModeValidation"
"NoVesaModes,NoXServerModes,NoPredefinedModes"
EndSection
Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
Option "UseEvents" "True"
Option "TripleBuffer" "True"
Option "AllowGLXWithComposite" "True"
Option "AddARGBVisuals" "True"
Option "AddARGBGLXVisuals" "True"
Option "NoLogo" "False"
Option "RenderAccel" "True"
Option "DPI" "100 x 100"
Option "CustomEDID" "DFP-0:/home/mythtv/.nVidia-edid/edid.bin"
Option "ConnectedMonitor" "DFP-0"
Option "UseDisplayDevice" "DFP-0"
# Option "DynamicTwinView" "False"
SubSection "Display"
Depth 24
Modes "1920x1080_50" "1920x1080_60" "1920x1080_24" "1920x1080_50i"
"1920x1080_60i" "1280x720" "1280x720_50" "1280x720_60"
"1280x720_60_0" "720x576" "720x576_50 "720x576_50i" "720x480"
"720x480_60" "720x480_60i" "700x525"
EndSubSection
EndSection
Output of xrandr:
Screen 0: minimum 640 x 480, current 1920 x 1080, maximum 1920 x 1080
default connected 1920x1080+0+0 0mm x 0mm
1920x1080 50.0* 51.0 52.0 53.0 54.0 65.0
1280x720 55.0 56.0 57.0 58.0
720x576 59.0 60.0 61.0
720x480 62.0 63.0 64.0
640x480 66.0
Many Thanks
Dave K.
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