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PostPosted: Thu May 22, 2008 12:27 pm 
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Joined: Fri Jan 06, 2006 9:35 pm
Posts: 64
Location: Northern Kentucky
First off I am not new to linux but I've not really dug into the nuts and bolts of what is under the GUI. I'd like to learn more.

I have a decent box running R5F27. 3Ghz Intel, 1GB ram, PCHD3000 and an Nvidia FX5200.

The box has been working well for me over the last three years. HD playback has been improved with each new release of KM. But I have left it as base as you can.

So here is my questions. Does having newer Nvidia drivers improve HD playback? If there are better drivers can someone give me some good basic instructions on how to do this?


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PostPosted: Thu May 22, 2008 12:37 pm 
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Location: Charlotte, NC
If you are running F27 then you should (could) have a pretty good HD playback experience. More info is needed to help though - what display are you using? What is the resolution (are you running 540P (or 1080i), 720p etc) and have you tweaked your xorg.conf as per the wiki? One of my frontends has a 5200 in it running 720P to an LCD panel - works great.

To answer your specific question, I doubt you will see any difference in the drivers.


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PostPosted: Thu May 22, 2008 6:27 pm 
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Location: Northern Kentucky
As it stands right now the playback is pretty good. 720P and 1080I are being recorded OTA.

My HDTV only has Component video in so I haven't connected the KM box to the TV. It is all playing back on a CRT screen at 1024X768. Though the monitor is capable of 1600X1200 I'm not sure how to raise the resolution.

The AppleTV sounds like a good option coming down the pipes for a frontend. Maybe after the next release.


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 Post subject: Try searching
PostPosted: Wed May 28, 2008 7:21 pm 
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Joined: Wed Apr 12, 2006 11:28 am
Posts: 82
Location: Beverly Hills, Michigan
Hi There,

You will need to make some modifications to your /etc/X11/xorg.conf file (it is where all your video settings are). You will need to add a "ModeLine" that tells the monitor what resolution to use.

You can find more information on the WIKI, you can also search for the modeline (resolution) you are looking for.

Also, be sure you review you xorg log file (it is located /var/log/Xorg.0.log)

You will also need to make sure your display section is setup to display the resolutions you want.

SubSection "Display"
Depth 15
Modes "1144x644" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 16
# Modes "1144x644" "800x600" "640x480"
Modes "ATSC-720-60p" "1144x644" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 24
# Modes "1144x644" "800x600" "640x480"
Modes "ATSC-720-60p" "1144x644" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 32
# Modes "1144x644" "800x600" "640x480"
Modes "ATSC-720-60



Below is an example from my xorg.conf file.
Section "ServerLayout"
Identifier "XFree86 Configured"
Screen 0 "Screen0" 0 0
InputDevice "Keyboard0" "CoreKeyboard"
# PS/2 Mouse not detected
# InputDevice "Serial Mouse" "CorePointer"
InputDevice "USB Mouse" "CorePointer"
EndSection

Section "ServerFlags"
Option "AllowMouseOpenFail" "true"

EndSection

Section "Files"
RgbPath "/usr/share/X11/rgb"
ModulePath "/usr/lib/xorg/modules"
FontPath "/usr/share/fonts/X11/misc:unscaled"
FontPath "/usr/share/fonts/X11/75dpi:unscaled"
FontPath "/usr/share/fonts/X11/100dpi:unscaled"
FontPath "/usr/share/fonts/X11/Type1"
FontPath "/usr/share/fonts/X11/Speedo"
FontPath "/usr/share/fonts/X11/PEX"
# Additional fonts: Locale, Gimp, TTF...
FontPath "/usr/share/fonts/X11/cyrillic"
# FontPath "/usr/share/fonts/X11/latin2/75dpi"
# FontPath "/usr/share/fonts/X11/latin2/100dpi"
# True type and type1 fonts are also handled via xftlib, see /etc/X11/XftConfig!
FontPath "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"
FontPath "/usr/share/fonts/truetype"
FontPath "/usr/share/fonts/latex-ttf-fonts"
EndSection

Section "Module"
# Comments: see http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=346408
Load "dbe" # Double Buffering Extension, very important.
# Load "dri" # This shouldn't be available choice if user has selected driver vga, vesa or nv.
Load "glx" # GLX Extension.
Load "freetype" # Freetype fonts.
Load "type1" # Type 1 fonts
Load "record" # Developer extension, usually not needed
# Load "extmod" # This is okay, but if you look into "man xorg.conf" you'll find option NOT to include DGA extension with extmod, and for a good reason.. DGA causes instability as it access videoram without consulting X about it.
SubSection "extmod"
Option "omit xfree86-dga"
EndSubSection
# Load "speedo" # Speedo fonts, this module doesn't exist in Xorg 7.0.17
# The following are deprecated/unstable/unneeded in Xorg 7.0
# Load "ddc" # ddc probing of monitor, this should be never present, as it gets automatically loaded.
# Load "GLcore" # This should be never present, as it gets automatically loaded.
# Load "bitmap" # Should be never present, as it gets automatically loaded. This is a font module, and loading it in xorg.conf makes X try to load it twice.
EndSection

Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
Option "CoreKeyboard"
Option "XkbRules" "xorg"
Option "XkbModel" "pc105"
Option "XkbLayout" "us"

EndSection


Section "InputDevice"
Identifier "PS/2 Mouse"
Driver "mouse"
Option "Protocol" "auto"
Option "ZAxisMapping" "4 5"
Option "Device" "/dev/psaux"
Option "Emulate3Buttons" "true"
Option "Emulate3Timeout" "70"
Option "SendCoreEvents" "true"
EndSection

Section "InputDevice"
Identifier "USB Mouse"
Driver "mouse"
Option "Device" "/dev/input/mice"
Option "SendCoreEvents" "true"
Option "Protocol" "IMPS/2"
Option "ZAxisMapping" "4 5"
Option "Buttons" "5"
EndSection

# Auto-generated by KNOPPIX mkxf86config

Section "Monitor"
Identifier "Monitor0"
Option "DPMS" "true"
Option "UseEdidDpi" "FALSE"
Option "DPI" "100 x 100"
VendorName "SAM"
ModelName "SAM4d72"
HorizSync 15.0 - 46.0
VertRefresh 59.0 - 61.0
# HorizSync 28.0 - 78.0 # Warning: This may fry very old Monitors
# HorizSync 28.0 - 96.0 # Warning: This may fry old Monitors
# VertRefresh 50.0 - 75.0 # Very conservative. May flicker.
# VertRefresh 50.0 - 62.0 # Extreme conservative. Will flicker. TFT default.
# These are the DDC-probed settings reported by your monitor.
ModeLine "640x350" 31.5 640 672 736 832 350 382 385 445 +hsync -vsync
ModeLine "640x400" 31.5 640 672 736 832 400 401 404 445 -hsync +vsync
ModeLine "720x400" 35.5 720 756 828 936 400 401 404 446 -hsync +vsync
ModeLine "640x480" 25.2 640 656 752 800 480 490 492 525 -hsync -vsync
ModeLine "640x480" 31.5 640 664 704 832 480 489 491 520 -hsync -vsync
ModeLine "640x480" 31.5 640 656 720 840 480 481 484 500 -hsync -vsync
ModeLine "640x480" 36.0 640 696 752 832 480 481 484 509 -hsync -vsync
ModeLine "800x600" 36.0 800 824 896 1024 600 601 603 625 +hsync +vsync
ModeLine "800x600" 40.0 800 840 968 1056 600 601 605 628 +hsync +vsync
ModeLine "800x600" 50.0 800 856 976 1040 600 637 643 666 +hsync +vsync
ModeLine "800x600" 49.5 800 816 896 1056 600 601 604 625 +hsync +vsync
ModeLine "800x600" 56.3 800 832 896 1048 600 601 604 631 +hsync +vsync
ModeLine "768x576" 35.0 768 792 872 976 576 577 580 597 -hsync +vsync
ModeLine "768x576" 42.9 768 800 880 992 576 577 580 601 -hsync +vsync
ModeLine "768x576" 45.5 768 808 888 1008 576 577 580 602 -hsync +vsync
ModeLine "768x576" 51.8 768 808 888 1008 576 577 580 605 -hsync +vsync
ModeLine "768x576" 62.6 768 816 896 1024 576 577 580 611 -hsync +vsync
ModeLine "800x600" 68.2 800 848 936 1072 600 601 604 636 -hsync +vsync
ModeLine "1024x768" 113.3 1024 1096 1208 1392 768 769 772 814 -hsync +vsync
ModeLine "1152x864" 81.6 1152 1216 1336 1520 864 865 868 895 -hsync +vsync
ModeLine "1152x864" 119.7 1152 1224 1352 1552 864 865 868 907 -hsync +vsync
ModeLine "1152x864" 143.5 1152 1232 1360 1568 864 865 868 915 -hsync +vsync
ModeLine "1920x1200" 193.2 1920 2048 2256 2592 1200 1201 1204 1242 +hsync -hsync
ModeLine "ATSC-480-59.94i" 12.0 640 664 736 760 480 484 492 525 interlace
ModeLine "ATSC-480-60i" 12.0 640 664 736 760 480 484 492 525 interlace
ModeLine "ATSC-480-59.94p" 23.9 640 664 736 760 480 484 492 525
ModeLine "ATSC-480-60p" 23.9 640 664 736 760 480 484 492 525
ModeLine "ATSC-480a-59.94i" 12.0 640 664 736 760 480 484 492 525 interlace
ModeLine "ATSC-480a-60i" 12.0 640 664 736 760 480 484 492 525 interlace
ModeLine "ATSC-480a-59.94p" 23.9 640 664 736 760 480 484 492 525
ModeLine "ATSC-480a-60p" 23.9 640 664 736 760 480 484 492 525
ModeLine "ATSC-720-59.94p" 74.2 1280 1320 1376 1650 720 722 728 750
ModeLine "ATSC-720-60p" 74.2 1280 1320 1376 1650 720 722 728 750
ModeLine "720x480" 27.0 720 736 798 858 480 489 495 525 -hsync -vsync
ModeLine "1144x644" 74.2 1144 1320 1360 1648 644 685 690 750 +hsync +vsync

# ADDED THIS SECTION FROM 20
Option "DPMS" "true"
Option "UseEdidDpi" "FALSE"
Option "DPI" "100 x 100"
Option "TVStandard" "NTSC-M"
# Option "ConnectedMonitor" "TV"
Option "NoLogo" "1"
EndSection

Section "Device"
### Available Driver options are:-
# sw_cursor is needed for some ati and radeon cards
#Option "sw_cursor"
#Option "hw_cursor"
#Option "NoAccel"
#Option "ShowCache"
#Option "ShadowFB"
#Option "UseFBDev"
#Option "Rotate"
Identifier "Card0"
# The following line is auto-generated by KNOPPIX mkxf86config
Driver "nvidia"
VendorName "All"
BoardName "All"
# BusID "PCI:1:0:0"
EndSection

Section "Screen"

# put options here
Identifier "Screen0"
Device "Card0"
Monitor "Monitor0"
DefaultDepth 24
Option "NoLogo"
#PF investigate Option "MetaModes" "1144x644"
# Option "MetaModes" "1280x720" # For 720P
#pf test15 Option "ConnectedMonitor" "TV"
# Option "TVStandard" "NTSC-M"
Option "TVStandard" "HD720p" # For 720P
Option "UseEvents" "True"
#Option "sw_cursor"
#Option "hw_cursor"
#Option "NoAccel"
#Option "ShowCache"
#Option "ShadowFB"
#Option "UseFBDev"
#Option "Rotate"

SubSection "Display"
Depth 15
Modes "1144x644" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 16
# Modes "1144x644" "800x600" "640x480"
Modes "ATSC-720-60p" "1144x644" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 24
# Modes "1144x644" "800x600" "640x480"
Modes "ATSC-720-60p" "1144x644" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 32
# Modes "1144x644" "800x600" "640x480"
Modes "ATSC-720-60p" "1144x644" "800x600" "640x480"
EndSubSection
EndSection


Hope this helps

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 Post subject:
PostPosted: Thu May 29, 2008 6:58 am 
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Joined: Thu Mar 02, 2006 5:42 pm
Posts: 410
Location: middleton wi usa atsc
jorin wrote:
Does having newer Nvidia drivers improve HD playback?
Maybe I missed it, but can you state exactly what problems you are having or what you want improved? Like choppy video? Stutter with the on screen menus? Motion artifacts? Bad audio? Each problem will have a specific solution.

Your hardware sounds like plenty for flawless playback of OTA HD in the USA, if configured correctly.


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 Post subject:
PostPosted: Thu May 29, 2008 1:30 pm 
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Joined: Fri Jan 06, 2006 9:35 pm
Posts: 64
Location: Northern Kentucky
jzigmyth wrote:
jorin wrote:
Does having newer Nvidia drivers improve HD playback?
Maybe I missed it, but can you state exactly what problems you are having or what you want improved? Like choppy video? Stutter with the on screen menus? Motion artifacts? Bad audio? Each problem will have a specific solution.


I guess I would say that it would be motion artifacts. When there is fast camera movement you see what looks like horizontal lines through the screen, like interlacing(?) Slow movement video looks great.

Audio is fine except for one of the PBS stations. I think they had some issues with time sync of audio being off. My HDTV had the same issue.


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 Post subject: Re: Try searching
PostPosted: Thu May 29, 2008 1:37 pm 
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Joined: Fri Jan 06, 2006 9:35 pm
Posts: 64
Location: Northern Kentucky
falinskip wrote:
Hi There,

You will need to make some modifications to your /etc/X11/xorg.conf file (it is where all your video settings are). You will need to add a "ModeLine" that tells the monitor what resolution to use.

You can find more information on the WIKI, you can also search for the modeline (resolution) you are looking for.

Also, be sure you review you xorg log file (it is located /var/log/Xorg.0.log)

You will also need to make sure your display section is setup to display the resolutions you want.


Sorry to be so dense but can you give me some details on how to do this? I live in a gui world but I am willing to learn.


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 Post subject:
PostPosted: Thu May 29, 2008 5:26 pm 
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Joined: Thu Mar 02, 2006 5:42 pm
Posts: 410
Location: middleton wi usa atsc
jorin wrote:
I guess I would say that it would be motion artifacts.
Go to utlities/setup > setup > tv settings > playback. First try turning deinterlacing on and select "bob 2x framerate" That works best for me. My cpu is slower than yours, so I also have "Standard XvMC" for the preferred mpeg2 decoder. If it doesn't get any better try all the deinterlacers with all the mpeg2 decoders.


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