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rigga
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 Posted: Mon Jun 06, 2005 12:32 pm |
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Joined: Wed May 18, 2005 2:57 am
Posts: 63
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Im considering using Tvout from my nvidia fx5200 card instead of my pvr 350 due to all the problems I have been having with it and not being able to play divx/dvd's through it etc. I have tried my nvidia card tonite and I just can not get a decent output, I find it looks like soft focus and the colours washed out. I have tried tweaking it with nvidia-settings but can not get a good picture, can anyone suggest a tool or options to change to get a better picture?
My tv is a SDTV that can do 100hz (thomson) and I have a svideo cable running from PC to TV. My XF86Config file is below (relevant parts)
Code: Section "Monitor"
Identifier "Monitor0"
# Option "DPMS" "true"
Option "TVStandard" "PAL-I"
Option "ConnectedMonitor" "TV"
Option "TVOutFormat" "SVIDEO"
Option "NoLogo" "1"
# Option "TVOverScan" "0.8"
VendorName "KDS"
ModelName "KDS1983"
HorizSync 30 - 50 # DDC-probed
VertRefresh 60 # DDC-probed
# These are the DDC-probed settings reported by your monitor.
# 800x600, 60.0Hz; hfreq=37.88, vfreq=60.32
ModeLine "800x600" 40.00 800 840 968 1056 600 601 605 628 +hsync +vsync
EndSection
Section "Screen"
Identifier "Screen0"
Device "Card0"
Monitor "Monitor0"
DefaultColorDepth 24
SubSection "Display"
Depth 24
Modes "800x600" "640x480"
EndSubSection
End Section
I have no idea if the TV settings are correct (modeline etc) as I have no specs for my TV, all i know s that it has 100hz refresh however when I set it to 100hz in the config file X would not start so I dropped it to 60hz.
Any help appreciated, once I have this sorted my wife will be off my back!
Thanks as always
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tjc
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Posted: Mon Jun 06, 2005 8:35 pm |
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Joined: Thu Mar 25, 2004 11:00 am
Posts: 9551
Location:
Arlington, MA
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Those resolutions are probably less than ideal for a PAL TV, although I don't remember the timings off the top of my head. The first thing to do is search the forum for terms "XF86Config-4" and "PAL" and see if you can't find a better example.
Next, the default Gamma of 1.0 is almost never right. A symptom of this is that when you try to adjust brightness you always end up either blacking out the dark colors or burning out the light ones. I found that setting it to 1.5-1.6 was a hge improvement for me, but YMWV. Next, try setting all the sync to vblank options on (there are about 4). Now you can start playing with brightness, contrast, hue, color saturation, ...
You'll also probably want to turn the flicker control down as much as you can stand since that will also help sharpen the picture.
I also use the "bob" deinterlace option in the MythTV playback setup/config.
BTW - A search of the forum should have turned up several thtreads with this information and far more. 
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rigga
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Posted: Tue Jun 07, 2005 3:12 am |
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Joined: Wed May 18, 2005 2:57 am
Posts: 63
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Thanks for the info, I did do a search prior to posting but did not find anything I though would resolve the problem but on further searching I have!. I will also try your suggestions for gamma etc and see what happens, I am supprised that not many people have requested an example XFree config for PAL, I must just have good eyesight 
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rigga
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Posted: Tue Jun 07, 2005 3:54 am |
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Joined: Wed May 18, 2005 2:57 am
Posts: 63
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I have noticed from most configs I have seen that people are using Composite rather than svideo - why is this? I thought svideo was meant to give better results?
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Girkers
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Posted: Tue Jun 07, 2005 4:58 am |
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Joined: Tue Mar 22, 2005 9:18 pm
Posts: 1422
Location:
Brisbane, Queensland, Australia
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Rigga you will find here in Aussie land that the reason most people use composite for the reason that most TVs don't come with S-Video.
Just my observation.
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Girkers
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rigga
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Posted: Tue Jun 07, 2005 5:50 am |
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Joined: Wed May 18, 2005 2:57 am
Posts: 63
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ahh I see, do you not find the quality to be a bit crappy?
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Xsecrets
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Posted: Tue Jun 07, 2005 8:42 am |
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Joined: Mon Oct 06, 2003 10:38 am
Posts: 4978
Location:
Nashville, TN
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you need to go back to trying to get your pvr350 card to work since you are obviously one of the people who will never be happy with the nvidia tv out.
_________________ Have a question search the forum and have a look at the KnoppMythWiki.
Xsecrets
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adoute
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Posted: Tue Jun 07, 2005 10:31 am |
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Joined: Tue Mar 29, 2005 6:15 pm
Posts: 79
Location:
Plymouth, MI
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Quote: Next, the default Gamma of 1.0 is almost never right. A symptom of this is that when you try to adjust brightness you always end up either blacking out the dark colors or burning out the light ones. I found that setting it to 1.5-1.6 was a hge improvement for me, but YMWV.
Can this be changed from the XF86Config-4 file, or is the proper way to adjust it to use an exec xgamma command?
Allan
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rigga
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Posted: Tue Jun 07, 2005 11:12 am |
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Joined: Wed May 18, 2005 2:57 am
Posts: 63
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Think I may have to try another card, I have now tried every suggestion and it still looks wahsed out and out of focus, I cant beleive anyone could put up with it looking like that, I must have a duff card or something. if support was better for the 350 i would stick with that but there are just too many issues with it at the moment...[/quote]
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rigga
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Posted: Tue Jun 07, 2005 4:01 pm |
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Joined: Wed May 18, 2005 2:57 am
Posts: 63
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I am finally happy!!! I am now getting excellent quality from my Nvidia FX2500 card which is as close if not the same as the output from my pvr350. My main problem was not having the correct modeline, here is my entire X config if anyone wants to refer to it, it is set up for PAL-I as I live in the UK.
Code: Section "ServerLayout"
Identifier "XFree86 Configured"
Screen 0 "Screen0" 0 0
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "PS/2 Mouse" "CorePointer"
EndSection
Section "ServerFlags"
Option "AllowMouseOpenFail" "true"
EndSection
Section "Files"
RgbPath "/usr/X11R6/lib/X11/rgb"
ModulePath "/usr/X11R6/lib/modules"
FontPath "/usr/X11R6/lib/X11/fonts/misc:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/misc"
FontPath "/usr/X11R6/lib/X11/fonts/75dpi:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/75dpi"
FontPath "/usr/X11R6/lib/X11/fonts/100dpi:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/100dpi"
FontPath "/usr/X11R6/lib/X11/fonts/Speedo"
FontPath "/usr/X11R6/lib/X11/fonts/PEX"
# Addiional fonts: Locale, Gimp, TTF...
FontPath "/usr/X11R6/lib/X11/fonts/cyrillic"
# True type and type1 fonts are also handled via xftlib, see /etc/X11/XftConfig!
FontPath "/usr/X11R6/lib/X11/fonts/Type1"
FontPath "/usr/share/fonts/ttf/western"
FontPath "/usr/share/fonts/ttf/decoratives"
FontPath "/usr/share/fonts/truetype"
FontPath "/usr/share/fonts/truetype/openoffice"
FontPath "/usr/share/fonts/truetype/ttf-bitstream-vera"
FontPath "/usr/share/fonts/latex-ttf-fonts"
FontPath "/usr/X11R6/lib/X11/fonts/defoma/CID"
FontPath "/usr/X11R6/lib/X11/fonts/defoma/TrueType"
EndSection
Section "Module"
Load "fbdevhw"
Load "dbe"
Load "v4l"
Load "extmod"
Load "glx"
Load "bitmap" # bitmap-fonts
Load "speedo"
Load "type1"
Load "freetype"
Load "record"
EndSection
Section "InputDevice"
Identifier "Keyboard0"
Driver "keyboard"
Option "CoreKeyboard"
Option "XkbRules" "xfree86"
Option "XkbModel" "pc105"
Option "XkbLayout" "gb"
EndSection
Section "InputDevice"
Identifier "Serial Mouse"
Driver "mouse"
Option "Protocol" "Microsoft"
Option "Device" "/dev/ttyS0"
Option "Emulate3Buttons" "true"
Option "Emulate3Timeout" "70"
Option "SendCoreEvents" "true"
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 "TVStandard" "PAL-I"
Option "ConnectedMonitor" "TV"
Option "TVOutFormat" "SVIDEO"
Option "NoLogo" "1"
Option "TVOverScan" "0.8"
VendorName "KDS"
ModelName "KDS1983"
Modeline "800x600@50" 30.97 800 832 944 976 600 613 618 631
DisplaySize 234 174
EndSection
Section "Device"
Identifier "Card0"
Driver "nvidia"
VendorName "All"
BoardName "All"
BusID "PCI:1:0:0"
Option "RenderAccel" "1"
Option "HWCursor" "1"
Option "NoLogo" "1"
Option "NvAGP" "1"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Card0"
Monitor "Monitor0"
DefaultColorDepth 24
SubSection "Display"
Depth 24
Modes "800x600@50"
EndSubSection
EndSection
Section "DRI"
Mode 0666
EndSection
I also then tweaked the colours using nvidia-settings as described in the knoppmyth wiki.
I hope this info is of some use to others.
If you need any further info let me know.
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Girkers
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Posted: Tue Jun 07, 2005 4:12 pm |
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Joined: Tue Mar 22, 2005 9:18 pm
Posts: 1422
Location:
Brisbane, Queensland, Australia
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rigga wrote: ahh I see, do you not find the quality to be a bit crappy?
To be honest, as I am still "fondling" with the setup I haven't really taken the time to sit back and look closedly at the quality of the image. As it connected to a standard TV and my HTPC is using a DVB card the quality is exceptionally better, but when I have a stable platform I will worry more about the quality.
thanks for asking 
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Girkers
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tjc
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Posted: Tue Jun 07, 2005 7:47 pm |
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Joined: Thu Mar 25, 2004 11:00 am
Posts: 9551
Location:
Arlington, MA
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adoute wrote: Can this be changed from the XF86Config-4 file, or is the proper way to adjust it to use an exec xgamma command?
I use Code: nvidia-settings --load-config-only which takes care of all the tuning paramters in more or less one place, and which can be adjusted using the nvidia-settings GUI.
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Mephi
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Posted: Wed Jun 08, 2005 10:36 am |
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Joined: Sat Feb 26, 2005 9:05 am
Posts: 160
Location:
Ipswich, UK
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rigga wrote: Modeline "800x600@50" 30.97 800 832 944 976 600 613 618 631
DisplaySize 234 174
How did you calculate that modeline? I've got the same probelm so I tred substituting your parts of my XF86config-4 but if I do that GDM wont restart.
Matt
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ceenvee703
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Posted: Wed Jun 08, 2005 10:40 am |
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Joined: Fri Apr 02, 2004 10:08 am
Posts: 1637
Location:
Virginia, USA
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Remember that Rigga is in PAL-land; if you're in NTSC-land that modeline won't work.
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rigga
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Posted: Wed Jun 08, 2005 10:59 am |
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Joined: Wed May 18, 2005 2:57 am
Posts: 63
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create the modeline using the modeline generator at sourceforge
http://xtiming.sourceforge.net/
Just enter the desired screen size (800x600) in the Basic Configuration section along with the vertical refresh (in my case 50hz) and click on Calculate Modeline, the modeline will then be shown at the top of the screen. The displaysize part in my config file is there to adjust the font sizes, without that line I doubt youll be able to read the text on screen, the numbers used will vary so just try different ones until you find one that works for you.
Hope that helps
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