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Recently I minimal installed debian squeeze(amd64), when I configs my resolution, unexpected errors came out, I did a lot of searching, but couldn't find a way to figure it out.

  1. to install the desktop environment: apt-get update, apt-get install xorg-core xserver-xorg-core gnome-core gdm3
  2. to install graphic grivers apt-get install build-essential nvidia-kernel-common linux-headers-$(uname -r), ./NVIDIA-Linux-x86_64-304.64.run

steps above seems all things is in the correctly way.

  1. to set resolution : cvt 1440 900, xrandr --newmode xxx, xrandr --addmode VGA-0 xxx

then I got that error:

X Error of failed request: BadMatch (invalid parameter attributes) Major opcode of failed request: 153 (RANDR). Minor opcode of failed request: 18 (RRAddOutputMode). Serial number of failed request: 29. Current serial number in output stream: 30.

I don't know what information U need, and just list some

graphic card: nvidia gt630.

monitor: phlips 190cw(1440x900, works well on windows)

xrandr out put

Screen 0: minimum 8 x 8, current 1280 x 1024, maximum 16384 x 16384
DVI-I-0 disconnected (normal left inverted right x axis y axis)
VGA-0 connected 1280x1024+0+0 (normal left inverted right x axis y axis) 338mm x 270mm
   1280x1024      60.0*+   75.0  
   1024x768       75.0     70.1     60.0  
   800x600        75.0     72.2     60.3     56.2  
   640x480        75.0     72.8     59.9  
DVI-I-1 disconnected (normal left inverted right x axis y axis)
HDMI-0 disconnected (normal left inverted right x axis y axis)
  1440x900_60.00 (0x29f)  106.5MHz
        h: width  1440 start 1528 end 1672 total 1904 skew    0 clock   55.9KHz
        v: height  900 start  903 end  909 total  934           clock   59.9Hz

lshw -c video out put

*-display               
   description: VGA compatible controller
   product: nVidia Corporation
   vendor: nVidia Corporation
   physical id: 0
   bus info: pci@0000:05:00.0
   version: a1
   width: 64 bits
   clock: 33MHz
   capabilities: pm msi pciexpress vga_controller bus_master cap_list rom
   configuration: driver=nvidia latency=0
   resources: irq:16 memory:f6000000-f6ffffff memory:e0000000-efffffff(prefetchable) memory:f0000000-f1ffffff(prefetchable) ioport:d000(size=128) memory:f7000000-f707ffff(prefetchable)

xorg.conf

Section "ServerLayout"
    Identifier     "Layout0"
    Screen      0  "Screen0"
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice    "Mouse0" "CorePointer"
EndSection

Section "Files"
EndSection

Section "InputDevice"
    # generated from default
    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      "Unknown"
    HorizSync       30.0 - 83.0
    VertRefresh     55.0 - 75.0
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

update:

I trid to get edid: apt-get install read-edid, sudo get-edid | parse-edid

but got this error:

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 0x11100 "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

update

I tried to force the resolution to 1440x900 by using nvidia-settings, after reboot, resolution changed to 1440X1024(nvidia-settings added a line to xorg.conf Option "metamodes" "1440x1024 +0+0"). screen become horizon-scrollable like that:

enter image description here

I also tried to extract edid.bin(by using nvidia-settings) and add Option "CustomEDID" "DFP-1:/etc/X11/edid.bin" at Section "Device" to xorg.conf. thanks to the awesome post Fixing Ugly DVI/HDMI Displays due to EDID bugs on nVidia drivers, but unfortunately it doesn't work either.

Any help is greatly appreciated. Thank you

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