xorg custom modelines

[bilboubu]

hi i am trying to use custom modelines because i suspect the edid of my tv is not quite right but i am only getting one low resolution with my xorg.conf, does it look correct?

# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings:  version 304.51  (buildmeister@swio-display-x86-rhel47-06.nvidia.com)  Tue Sep 18 18:48:10 PDT 2012
 
# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig:  version 304.51  (buildmeister@swio-display-x86-rhel47-06.nvidia.com)  Tue Sep 18 18:48:23 PDT 2012
 
Section "ServerLayout"
    Identifier     "Layout0"
    Screen      0  "Screen0" 0 0
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice    "Mouse0" "CorePointer"
    Option         "Xinerama" "0"
EndSection
 
Section "InputDevice"
    Identifier     "Mouse0"
    Driver         "mouse"
    Option         "Protocol" "auto"
    Option         "Device" "/dev/psaux"
    Option         "Emulate3Buttons" "no"
    Option         "ZAxisMapping" "4 5"
EndSection
 
Section "InputDevice"
 
        # generated from default
    Identifier     "Keyboard0"
    Driver         "kbd"
EndSection
 
Section "Monitor"
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "LG Electronics LG TV"
    HorizSync       30.0 - 83.0
    VertRefresh     58.0 - 62.0
    ModeLine       "1360x768_50.00" 69.61 1360 1416 1560 1760 768 769 772 791 -hsync +vsync
    ModeLine       "1360x768_60.00" 84.72 1360 1424 1568 1776 768 769 772 795 -hsync +vsync
    ModeLine       "1360x768_59.94" 84.63 1360 1424 1568 1776 768 769 772 795 -hsync +vsync
    ModeLine       "1280x720_50.00" 60.47 1280 1328 1456 1632 720 721 724 741 -hsync +vsync
    ModeLine       "1280x720_60.00" 74.48 1280 1336 1472 1664 720 721 724 746 -hsync +vsync
    ModeLine       "1280x720_59.94" 74.41 1280 1336 1472 1664 720 721 724 746 -hsync +vsync
    Option         "DPMS"
    Option         "DPI" "96 x 96"
EndSection
 
Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce 9300 / nForce 730i"
    Option         "UseEDID" "FALSE"
    Option         "ModeValidation" "NoVesaModes, NoXServerModes, NoVertRefreshCheck"
EndSection
 
Section "Screen"
 
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "HWCursor" "Off"
    Option         "NoLogo" "True"
    Option         "DynamicTwinView" "False"
    Option         "FlatPanelProperties" "Scaling = Native"
    Option         "ModeDebug" "true"
    Option         "Stereo" "0"
    SubSection     "Display"
        Depth       24
        Modes       "1360x768_50.00" "1360x768_60.00" "1360x768_59.94" "1280x720_50.00" "1280x720_60.00" "1280x720_59.94"
 
    EndSubSection
EndSection
 
Section "Extensions"
    Option         "Composite" "Disable"
EndSection

[bilboubu]

Could the reason the modes aren't being picked up due to "ModelName "LG Electronics LG TV"" and the use edid false? Maybe I should change ModelName to DFP-0 ?

[dino99]

actual kernel directly deal with X, so xorg.conf is no more needed (and it can badly corrupt/disturb the system if not set correctly).

if you really have edid issue, you should use nouveau instead (xserver-xorg-video-nouveau)

[bilboubu]

if you really have edid issue, you should use nouveau instead (xserver-xorg-video-nouveau)

Thanks, but why is this?

[dino99]

Thanks, but why is this?

it could be:
- that tv model is unknown to ubuntu/kernel, so cant set the required config if the default ones dont work
- that tv dont communicate the edid (not set, chipset missing, ...)

see: man lshw

and into a terminal, you can try:

Do the following:

sudo apt-get install read-edid

sudo get-edid | parse-edid

It should fix the problem. I had it once with my TV. EDID is the Extended Display Identification Data and describes what features your display has.

[bilboubu]

How does nouveau help in this situation?

[dino99]

How does nouveau help in this situation?

it has the builtin modelines detection

[bilboubu]

So it some how queries/trys modes the tv will accept without using the edid?

[bilboubu]

what in the world?


get-edid: get-edid version 2.0.0

Performing real mode VBE call
Interrupt 0x10 ax=0x4f00 bx=0x0 cx=0x0
Function supported
Call successful

VBE version 300
VBE string at 0x2110 "NVIDIA"

VBE/DDC service about to be called
Report DDC capabilities

Performing real mode VBE call
Interrupt 0x10 ax=0x4f15 bx=0x0 cx=0x0
Function supported
Call successful

Monitor and video card combination does not support DDC1 transfers
Monitor and video card combination does not support DDC2 transfers
0 seconds per 128 byte EDID block transfer
Screen is not blanked during DDC transfer

Reading next EDID block

VBE/DDC service about to be called
Read EDID

Performing real mode VBE call
Interrupt 0x10 ax=0x4f15 bx=0x1 cx=0x0
Function supported
Call failed

The EDID data should not be trusted as the VBE call failed
Error: output block unchanged
parse-edid: IO error reading EDID