DVI Support

atom · 02-27-2004, 08:33 AM

I've recently installed RedHat, and I own an LCD monitor with DVI and RGB (analog) support (i mean input).

Now the RGB input works, but the picture is not the best. Also, DVI works in windows, so i know it's not a hardware fault. It's got to be config.

I installed the newest NVIdia drivers sucsessfully, and everything works, except the DVI input, which was wrongly configured and did not display a picture previously, now it is shut down, off, and only the RGB input is working.

My graphic card is Nvidia Geforce 4 Ti 4200.

Does anyone know if DVI is supported in linux and how can i configure it?

Thanks in advance

funkify · 03-08-2004, 09:15 AM

I'm having the same exact problem but with a Geforce 3 card. I hope someone can shed some light on this, analog on an LCD monitor is really crappy!

ghansri · 04-01-2004, 02:59 PM

I am having the same problem, the RGB image is terrible ... I wish someone could post an answer to this problem

Godmother · 04-17-2004, 02:04 AM

I can see that I'm not the only one.

I have a LG L1710B LCD-monitor and my Mandrake doesn't seem to like its DVI input. GUI appears with RGB cable just fine though the image is a bit crappy as it is with analog LCD.

Electro · 04-17-2004, 02:24 PM

In the Nvidia documentation. Look for twinview.

Godmother · 04-18-2004, 01:46 AM

New Nvidia driver for my graphic card solved the problem. Mandrake's generic driver just didn't support DVI.

atom · 04-19-2004, 09:50 AM

are there new drivers availible? i mean there weren't any new ones before... i'll go check them out.

atom · 04-19-2004, 11:18 AM

there weren't any new drivers, and i found nothing in the documentation, it only speaks of twinview for windows... It's got to be the drivers, the DVI output is turned off, not just "not configured right"

atom · 04-19-2004, 02:46 PM

Guys, i found the solution. The CRT output doesn't work then, everything switches to DVI output, but the important thing it that DVI works. I'm attaching my XF86Config (usually /etc/X11/XF86Config)

Code:

 
# XFree86 4 configuration created by redhat-config-xfree86
#Modified by Atom to meet his computer's graphiccard GeForce Ti 4200 DVI output

Section "ServerLayout"
        Identifier     "Default Layout"
        Screen      0  "Screen0" 0 0
        InputDevice    "Mouse0" "CorePointer"
        InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

Section "Files"

# RgbPath is the location of the RGB database.  Note, this is the name of the
# file minus the extension (like ".txt" or ".db").  There is normally
# no need to change the default.
# Multiple FontPath entries are allowed (they are concatenated together)
# By default, Red Hat 6.0 and later now use a font server independent of
# the X server to render fonts.
        RgbPath      "/usr/X11R6/lib/X11/rgb"
        FontPath     "unix/:7100"
EndSection

Section "Module"

#       Load  "dri"
        Load  "dbe"
        Load  "extmod"
        Load  "fbdevhw"
        Load  "glx"
        Load  "record"
        Load  "freetype"
        Load  "type1"
#the following line commented when installing NVIDIA driver
EndSection

Section "InputDevice"

# Specify which keyboard LEDs can be user-controlled (eg, with xset(1))
#       Option  "Xleds"         "1 2 3"
# To disable the XKEYBOARD extension, uncomment XkbDisable.
#       Option  "XkbDisable"
# To customise the XKB settings to suit your keyboard, modify the
# lines below (which are the defaults).  For example, for a non-U.S.
# keyboard, you will probably want to use:
#       Option  "XkbModel"      "pc102"
# If you have a US Microsoft Natural keyboard, you can use:
#       Option  "XkbModel"      "microsoft"
#
# Then to change the language, change the Layout setting.
# For example, a german layout can be obtained with:
#       Option  "XkbLayout"     "de"
# or:
#       Option  "XkbLayout"     "de"
#       Option  "XkbVariant"    "nodeadkeys"
#
# If you'd like to switch the positions of your capslock and
# control keys, use:
#       Option  "XkbOptions"    "ctrl:swapcaps"
# Or if you just want both to be control, use:
#       Option  "XkbOptions"    "ctrl:nocaps"
#
        Identifier  "Keyboard0"
        Driver      "keyboard"
        Option      "XkbRules" "xfree86"
        Option      "XkbModel" "pc105"
        Option      "XkbLayout" "us"
EndSection

Section "InputDevice"
        Identifier  "Mouse0"
        Driver      "mouse"
        Option      "Protocol" "IMPS/2"
        Option      "Device" "/dev/input/mice"
        Option      "ZAxisMapping" "4 5"
        Option      "Emulate3Buttons" "no"
EndSection

Section "InputDevice"

# If the normal CorePointer mouse is not a USB mouse then
# this input device can be used in AlwaysCore mode to let you
# also use USB mice at the same time.
        Identifier  "DevInputMice"
        Driver      "mouse"
        Option      "Protocol" "IMPS/2"
        Option      "Device" "/dev/input/mice"
        Option      "ZAxisMapping" "4 5"
        Option      "Emulate3Buttons" "no"
EndSection

Section "Monitor"
        Identifier   "Monitor0"
        VendorName   "Monitor Vendor"
        ModelName    "Generic Laptop Display Panel 1280x1024"
        HorizSync    31.5 - 67.0
        VertRefresh  50.0 - 75.0
        Option      "dpms"
EndSection

Section "Device"
        Identifier  "Videocard0"
        Driver      "nvidia"
        VendorName  "Videocard vendor"
        BoardName   "NVIDIA GeForce 4 (generic)"
        VideoRam    131072
        #TwinView settings
        Option      "TwinView"
        Option      "1280x1024, 1280x1024; 1280x960, 1280x960; 1152x864, 1152x864; 1024x768, 1024x768; 800x600, 800x600; 640x480, 640x480"
        Option      "SecondMonitorHorizSync"            "31.5 - 67.0"
        Option      "SecondMonitorVertRefresh"          "75.0"
        Option      "TwinViewOrientation"               "Clone"
        Option      "ConnectedMonitor"                  "DFP"#, CRT"
EndSection

Section "Screen"
        Identifier "Screen0"
        Device     "Videocard0"
        Monitor    "Monitor0"
        DefaultDepth     24
        SubSection "Display"
                Depth     24
                Modes    "1280x1024" "1280x960" "1152x864" "1024x768" "800x600" "640x480"
        EndSubSection
EndSection

Section "DRI"
        Group        0
        Mode         0666
EndSection

Electro · 04-19-2004, 04:28 PM

I do not like when people ignore more posts. The documentation has information about twinview. Yes, there is twinview in LINUX. You did not read it very closely.

atom · 04-20-2004, 07:31 AM

i did not ignore your post, it actually did help very much, but only as a hint as to where the info could be hidden. I searched for twinview and found NOTHING useful. Then i got myself into the advanced readmes in how to install the drivers and found twinview... witch yealded another hyperlink... Witch contained about a ton of info about configuring twinview. Thanks for the hint, but the info was not availible thru the "twinview" search.

So let everybody know that if it wasn't for electro, i would still not have DVI.

But if you could help me debug this and get my VGA and DVI working together, I really would be grateful.