DVI and non-standard screen resulution (1680*1050)

zindel · 2006-10-11 15:16:17

I've bought a new monitor LG L204WT. It has 2 way of connection to the videocard: VGA and DVI. My videocard also supports two these interfaces.
So, when I'm connectioning devices via VGA cable - all is working OK, but when doing via DVI I got errors: my screen resulution become ugly
My friend said me that the picture via DVI is match better then VGA one (is this true?)

Does anyone know what may be the reason of such behaviour?

Some details:
Monitor: LG L204WT
Video: Inno3D GeForce4 MX440

my xorg.conf:

Section "ServerLayout"
    Identifier     "Simple Layout"
    Screen         "Screen 1" 0 0
    InputDevice    "Mouse1" "CorePointer"
    InputDevice    "Keyboard1" "CoreKeyboard"
EndSection

Section "Files"
    RgbPath         "/usr/share/X11/rgb"
    ModulePath      "/usr/lib/xorg/modules"
    FontPath        "/usr/share/fonts/misc/"
    FontPath        "/usr/share/fonts/TTF/"
    FontPath        "/usr/share/fonts/Type1/"
    FontPath        "/usr/share/fonts/CID/"
    FontPath        "/usr/share/fonts/75dpi/"
    FontPath        "/usr/share/fonts/100dpi/"
    FontPath        "/usr/share/fonts/local/"
EndSection

Section "Module"
    Load           "dbe"      # Double buffer extension
    SubSection     "extmod"
        Option         "omit xfree86-dga"   # don't initialise the DGA extension
    EndSubSection
    Load           "type1"
    Load           "speedo"
    Load           "freetype"
    Load           "xtt"
    Load           "glx"
    Load           "bitmap"
    Load           "int10"
    Load           "vbe"
EndSection

Section "InputDevice"
    Identifier     "Keyboard1"
    Driver         "kbd"
    Option         "XkbRules" "xorg"
    Option         "XkbModel" "pc105"
    Option         "XkbLayout" "us,ru(winkeys)"
    Option         "XkbVariant" "us"
    Option         "XkbOptions" "grp:ctrl_shift_toggle"
EndSection

Section "InputDevice"

    Identifier     "Mouse1"
    Driver         "mouse"
    Option         "CorePointer"
    Option         "Protocol" "ImPS/2"
    Option         "Device" "/dev/input/mice"
    Option         "Emulate3Buttons" "true"
    Option         "ZAxisMapping" "4 5"
# Mouse-speed setting for PS/2 mouse.
EndSection

Section "Monitor"
    Identifier     "SyncMaster"
    Option         "DPMS"
    VendorName "Generic"
    ModelName "Flat Panel 1680x1050"
    #HorizSync 31.5-90
    #VertRefresh 60
    #ModeLine "1680x1050" 146.2 1680 1784 1960 2240 1050 1053 1059 1089 +HSync -VSync
    
    # modeline generated by gtf(1) [handled by XFdrake]
    #ModeLine "1680x1050_60"  147.14  1680 1784 1968 2256  1050 1051 1054 1087  -HSync +VSync
EndSection

Section "Device"

    #Driver      "nv"
    # Insert Clocks lines here if appropriate
    Identifier     "Nvidia"
    Driver         "nvidia"
    Option    "RenderAccel" "True"
    #ption "UseEDID" "False"
    #Option "IgnoreEDID" "True"
    #Option "ModeValidation" "NoEdidModes"
EndSection

Section "Screen"
    Identifier     "Screen 1"
    Device         "Nvidia"
    Monitor        "SyncMaster"
    DefaultDepth    24
    Option         "RenderAccel" "true"
    #Option         "AllowGLXWithComposite" "true"
    SubSection     "Display"

        #Virtual     1600 1280
        Viewport    0 0
        Virtual     1680 1050
        Depth       8
        Modes      "1680x1050" "1280x1024" "1024x768" "800x600" "640x480"
    EndSubSection
    SubSection     "Display"

        #Virtual     1280 1024
        #Virtual     1680 1050
        Viewport    0 0
        Depth       16
        Modes      "1680x1050" "1280x1024" "1024x768" "800x600" "640x480"
    EndSubSection
    SubSection     "Display"

        #Virtual     1280 1024
        Viewport    0 0
        Virtual     1680 1050
        Depth       24
        Modes      "1680x1050" "1280x1024" "1024x768" "800x600" "640x480"
    EndSubSection
EndSection

the part of Xorg.0.log

(**) NVIDIA(0): Depth 24, (--) framebuffer bpp 32
(==) NVIDIA(0): RGB weight 888
(==) NVIDIA(0): Default visual is TrueColor
(==) NVIDIA(0): Using gamma correction (1.0, 1.0, 1.0)
(**) NVIDIA(0): Option "RenderAccel" "true"
(**) NVIDIA(0): Enabling RENDER acceleration
(II) NVIDIA(0): NVIDIA GPU GeForce4 MX 440 with AGP8X at PCI:1:0:0
(--) NVIDIA(0): VideoRAM: 65536 kBytes
(--) NVIDIA(0): VideoBIOS: 04.18.20.13.00
(II) NVIDIA(0): Detected AGP rate: 4X
(--) NVIDIA(0): Interlaced video modes are supported on this GPU
(--) NVIDIA(0): Connected display device(s) on GeForce4 MX 440 with AGP8X at
(--) NVIDIA(0):     PCI:1:0:0:
(--) NVIDIA(0):     LG L204WT (DFP-0)
(--) NVIDIA(0): LG L204WT (DFP-0): 135.0 MHz maximum pixel clock
(--) NVIDIA(0): LG L204WT (DFP-0): Internal Single Link TMDS
(WW) NVIDIA(0): Mode "1400x1050" is too large for LG L204WT (DFP-0);
(WW) NVIDIA(0):     discarding.
(WW) NVIDIA(0): Mode "1600x1024" is too large for LG L204WT (DFP-0);
(WW) NVIDIA(0):     discarding.
(II) NVIDIA(0): Assigned Display Device: DFP-0
(WW) NVIDIA(0): No valid modes for "1680x1050"; removing.
(II) NVIDIA(0): Validated modes:
(II) NVIDIA(0):     "1280x1024"
(II) NVIDIA(0):     "1024x768"
(II) NVIDIA(0):     "800x600"
(II) NVIDIA(0):     "640x480"
(**) NVIDIA(0): Virtual screen size configured to be 1680 x 1050
(--) NVIDIA(0): DPI set to (99, 98); computed from "UseEdidDpi" X config option

Any help would be greatly appreciated. Thanks

zen_guerrilla · 2006-10-11 20:28:25

The resolution you want to use is not "standard" (per se) & thus not supported by default. You need to create a modeline for that resolution. This site, http://xtiming.sourceforge.net/cgi-bin/xtiming.pl is very useful. Just enter your monitor's specs and get a modeline. Then add it in your xorg.conf.

zindel · 2006-10-11 21:38:55

thank you very much. I'll try this tomorrow (it is 00:35 here:)). But I see that these modelines are right for the XFree86... Is this also possible lines for the Xorg?

zen_guerrilla · 2006-10-12 01:29:21

They're compatible w/ each other.

pelle.k · 2006-10-12 16:06:39

"gtf 1680 1050 60" in a terminal as you may already know. Also i suggest you remove the "_60" because as of now, it doesn't apply to any of the modes in the configuration. Also, it is commented out...(why!)

#ModeLine "1680x1050_60"  147.14  1680 1784 1968 2256  1050 1051 1054 1087  -HSync +VSync

So, this is what it should look like;

    ModeLine "1680x1050"  147.14  1680 1784 1968 2256  1050 1051 1054 1087  -HSync +VSync

zindel · 2006-10-13 10:33:29

I've tried all of these... It didn't help different modelines from different sources (gtf and that perl script on the web).

Also I tried with "_60" and without it... Nothing... VGA is working correctly. And it is commented because I've done many experiments before posting here.

Shaika-Dzari · 2006-10-13 21:59:58

You must set horizSync and Vertrefresh in you xorg.conf to have 1680x1050.
This value are different for each monitor. You can find them in the monitor manual or in your specifications.

You can also set some options in the xorg.conf.

Here mine (you must set your own Horiz and VertRefresh value)

Section "Monitor"
        Identifier "Monitor0"
        VendorName   "BenQ"
        ModelName    "FP202W"
        HorizSync    30.0 - 81.0
        VertRefresh  56.0 - 76.0
        Option "DPMS"
        Modeline "1680x1050"   119.00   1680 1728 1760 1840   1050 1053 1059 1080 +hsync -vsync
EndSection

Section "Device"
        Identifier  "Card0"
        Driver      "nvidia"
        VendorName  "Nvidia"
        BoardName   "FX 5600"
        Option "RenderAccel" "false"
#       Option "CursorShadow" "true"
#       Option "NoLogo" "true"
        Option "UseDisplayDevice" "DFP-0"
        Option "UseEDIDFreqs" "false"
        Option   "UseEdidDPI"   "FALSE"
        Option   "DPI"   "99 x 98"
EndSection

Section "Screen"
        Identifier "Screen0"
        Device     "Card0"
        Monitor    "Monitor0"
        DefaultDepth 24
        SubSection "Display"
                Viewport 0 0
                Depth     24
                Modes "1680x1050"
        EndSubSection

Good luck!

Stalwart · 2006-10-14 17:50:52

I own Samsung 205bw, it's 1680x1050 too (which is pretty common resolution nowadays). Some people say GeForce FX series have broken DVI-port, others say default monitor's DVI cable sucks, but i use VGA too

zindel · 2006-10-23 21:26:09

Stalwart, Hm... I have Single-Channel DVI cable as default. And then I owned new Dual-Channel DVI cable. I tried with it but got no picture at all instead of broken resolution. As for the FX cards - I have MX series (MX 440)

It is pretty funny to speak English when both of us are speaking Russian, yes? I remember you from the Russian Ubuntu forum

elasticdog · 2006-10-24 00:54:01

I run 1680x1050 through DVI with no problems. I used to have to specify a modeline, but that was always tricky...some worked, some didn't, and I never knew which one was the "correct" mode. Anyway, with the newer releases of Xorg (probably around 5-6 months ago), I don't have to specify a modeline at all.

As Shaika-Dzari mentioned, you do have to specify the proper horizontal sync and vertical refresh though. For an example, here is the relevant portion of my <code>xorg.conf</code> file (and my graphics card stuff too, for clarification):

Section "Monitor"
        Identifier   "Monitor0"
        VendorName   "Dell"
        ModelName    "UltraSharp 2005FPW"
        HorizSync    30.0 - 83.0
        VertRefresh  56.0 - 75.0
        Option       "DPMS"  "true"
EndSection

Section "Device"
        Identifier  "Card0"
        Driver      "nvidia"
        VendorName  "NVIDIA Corporation"
        BoardName   "GeForce 6200"
        Option      "HWCursor"               "off"
        Option      "IgnoreDisplayDevices"   "CRT, TV"
        Option      "NoLogo"                 "true"
        Option      "NvAgp"                  "1"
        Option      "RenderAccel"            "true"
        Option      "AllowGLXWithComposite"  "true"
EndSection

Section "Extensions"
        Option  "Composite"  "Enable"
EndSection

Section "Screen"
        Identifier    "Screen0"
        Device        "Card0"
        Monitor       "Monitor0"
        DefaultDepth  24
        SubSection "Display"
                Viewport  0 0
                Depth     24
                Modes     "1680x1050"
        EndSubSection
EndSection

Mr.Elendig · 2006-10-24 11:12:43

There is a known bug with nvidia cards and edid.
Try adding

Option "IgnoreEDID" "true"

to your 'Device' section in xorg.conf

Stalwart · 2006-10-24 18:27:54

Mr.Elendig wrote:

There is a known bug with nvidia cards and edid.
Try adding
Option "IgnoreEDID" "true"
to your 'Device' section in xorg.conf

It doesn't help

2Elasticdog:
You have 6xxx series card which differs from older geforces

zindel · 2006-10-25 05:36:20

I've tried either "IgnoreEDID" (take a look plz to xorg.conf on the top) or specifiying the appropriate VSync and HSync (from my monitor spec). Nothing helped. As far as I've undertood from our discussion its seems to be the Nvidia cards bug, yes?

Next week I'll have newer nvidia card for testing... Will see if it helps. I'll post my results here

Mr.Elendig · 2006-10-25 14:37:51

My (crappy, but working) xorg.conf, just for comparison:
http://pastebin.ca/221094

btw, you might want to try:
Option "IgnoreEDID" "True"
Option "ModeValidation" "NoEdidModes"

Arch Linux

#1 2006-10-11 15:16:17

DVI and non-standard screen resulution (1680*1050)

#2 2006-10-11 20:28:25

Re: DVI and non-standard screen resulution (1680*1050)

#3 2006-10-11 21:38:55

Re: DVI and non-standard screen resulution (1680*1050)

#4 2006-10-12 01:29:21

Re: DVI and non-standard screen resulution (1680*1050)

#5 2006-10-12 16:06:39

Re: DVI and non-standard screen resulution (1680*1050)

#6 2006-10-13 10:33:29

Re: DVI and non-standard screen resulution (1680*1050)

#7 2006-10-13 21:59:58

Re: DVI and non-standard screen resulution (1680*1050)

#8 2006-10-14 17:50:52

Re: DVI and non-standard screen resulution (1680*1050)

#9 2006-10-23 21:26:09

Re: DVI and non-standard screen resulution (1680*1050)

#10 2006-10-24 00:54:01

Re: DVI and non-standard screen resulution (1680*1050)

#11 2006-10-24 11:12:43

Re: DVI and non-standard screen resulution (1680*1050)

#12 2006-10-24 18:27:54

Re: DVI and non-standard screen resulution (1680*1050)

#13 2006-10-25 05:36:20

Re: DVI and non-standard screen resulution (1680*1050)

#14 2006-10-25 14:37:51

Re: DVI and non-standard screen resulution (1680*1050)

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