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| Switching to Widescreen... http://forums.linhes.org/viewtopic.php?f=11&t=17223 |
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| Author: | Gibble [ Fri Nov 09, 2007 10:05 pm ] |
| Post subject: | Switching to Widescreen... |
So, I just hooked my mythbox up to an HD Widescreen projector ...I have to change something, somewhere to get the resolution right, but I have no clue what...or where. |
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| Author: | brfransen [ Fri Nov 09, 2007 11:52 pm ] |
| Post subject: | |
/etc/X11/xorg.conf Britney |
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| Author: | Gibble [ Mon Nov 12, 2007 10:42 am ] |
| Post subject: | |
Got the file, not sure what changes to make. |
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| Author: | brfransen [ Mon Nov 12, 2007 2:48 pm ] |
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You will need to select a modeline that works for your display. Here are some examples: http://www.mythtv.org/wiki/index.php/Modeline_Database I would start with the one of the nVidia Driver ModePool if you have an nVidia card. In the xorg.conf under the "Screen" section, select the SubSection "Display" section of whatever your DefaultColorDepth is set to and change modes to: Modes "1920x1080_60" "1280x720_60" "720x480_60" Then do a pkill xinit to restart x. If your display doesn't come up you will have to find a custom modeline for your display. Britney |
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| Author: | Gibble [ Mon Nov 12, 2007 3:11 pm ] |
| Post subject: | |
Thanks, I'll try that when I get home. Some extra info, yes it's a nVidia card, though I can't for life of me remember which  (edit: Might be a 7300GT)
And I'm connecting to a BenQ W500 Projector with s-video at the moment (not sure what the best connection choice is for this, though I'm sure it is NOT s-video :p). |
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| Author: | brfransen [ Mon Nov 12, 2007 5:47 pm ] |
| Post subject: | |
That projector is a 1280x720 projector so drop the "1920x1080_60" from your modes line. Your best connection would be using a DVI to HDMI cable like this: http://www.monoprice.com/products/produ ... 1&format=2 Depending on the length of your run you might need to get a 24awg or 22awg cable. Britney |
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| Author: | Gibble [ Mon Nov 12, 2007 11:59 pm ] |
| Post subject: | |
Hmm...still shows 4:3 
Code: # nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig: version 1.0 (buildmeister@builder3) Mon Feb 26 23:38:46 PST 2007 #Section "DRI" # Mode 0666 #EndSection Section "ServerLayout" # PS/2 Mouse not detected # Serial Mouse not detected Identifier "XFree86 Configured" Screen 0 "Screen0" 0 0 InputDevice "Keyboard0" "CoreKeyboard" InputDevice "USB Mouse" "CorePointer" 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" EndSection Section "Module" # Comments: see http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=346408 #Load "int10" # 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 i Load "dbe" # Double Buffering Extension, very important. Load "glx" # GLX Extension. Load "freetype" # Freetype fonts. Load "type1" # Type 1 fonts Load "record" # Developer extension, usually not needed SubSection "extmod" Option "omit xfree86-dga" EndSubSection EndSection Section "ServerFlags" Option "AllowMouseOpenFail" "true" 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 Section "Monitor" # The "magic" modelines borrowed from someone else Identifier "Monitor0" HorizSync 30.0 - 50.0 VertRefresh 60.0 #ModeLine "640x480" 25.2 640 664 760 800 480 491 493 525 #ModeLine "640x480@60" 24.1 640 672 760 792 480 490 495 505 Option "DPMS" "true" Option "UseEdidDpi" "FALSE" Option "DPI" "100 x 100" EndSection Section "Device" #BusID "PCI:1:0:0" ### 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" Driver "nvidia" VendorName "All" BoardName "All" EndSection Section "Screen" Identifier "Screen0" Device "Card0" Monitor "Monitor0" DefaultDepth 24 SubSection "Display" Depth 1 Modes "1280x720_60" "720x480_60" EndSubSection SubSection "Display" Depth 4 Modes "1280x720_60" "720x480_60" EndSubSection SubSection "Display" Depth 8 Modes "1280x720_60" "720x480_60" EndSubSection SubSection "Display" Depth 15 Modes "1280x720_60" "720x480_60" EndSubSection SubSection "Display" Depth 16 Modes "1280x720_60" "720x480_60" EndSubSection SubSection "Display" Depth 24 Modes "1280x720_60" "720x480_60" EndSubSection SubSection "Display" Depth 32 Modes "1280x720_60" "720x480_60" EndSubSection EndSection |
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| Author: | brfransen [ Tue Nov 13, 2007 9:44 am ] |
| Post subject: | |
It probably has something to do with using s-video. Your video card is probably only outputting 800x600 or 640x480 over s-video. Look at your /var/log/Xorg.0.log file and determine what resolution is being used. Britney |
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| Author: | Gibble [ Tue Nov 13, 2007 9:49 am ] |
| Post subject: | |
Code: (WW) NVIDIA(0): No valid modes for "1280x720_60"; removing.
(WW) NVIDIA(0): No valid modes for "720x480_60"; removing. (WW) NVIDIA(0): (WW) NVIDIA(0): Unable to validate any modes; falling back to the default mode (WW) NVIDIA(0): "nvidia-auto-select". (WW) NVIDIA(0): (II) NVIDIA(0): Validated modes: (II) NVIDIA(0): "nvidia-auto-select" (II) NVIDIA(0): Virtual screen size determined to be 1024 x 768 Hmm, that's not good. |
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| Author: | Gibble [ Tue Nov 13, 2007 12:30 pm ] |
| Post subject: | |
I'm going to pick up a DVI->HDMI cable on my way home from work tonight. Hopefully that helps out to some degree. |
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| Author: | Gibble [ Tue Nov 13, 2007 7:29 pm ] |
| Post subject: | |
It's all working great now 
Hooked up the HDMI cable and after a few moments (and a reboot) the projector saw the new source and wowee! |
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| Author: | tjc [ Tue Nov 13, 2007 8:08 pm ] |
| Post subject: | |
brfransen wrote: It probably has something to do with using s-video. Your video card is probably only outputting 800x600 or 640x480 over s-video.
Dead on. To be absolutely clear about this and make sure that there's no misunderstanding, S-Video does not support HDTV output! It's strictly SDTV only, meaning NTSC or PAL. Anything else you tell the video card (even 800x600) will get scaled to the NTSC or PAL standard resolutions for S-Video output. |
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| Author: | Gibble [ Tue Nov 13, 2007 8:39 pm ] |
| Post subject: | |
That is good to know
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