I'm new to Ubuntu, I recently installed 12.04.4 LTS.

My display is not recognized by Ubuntu.

Display: Kent Modular Electronics (KME) 29LR1901A51UN/1 connected via RGBHV BNC connectors.

Video card: Nvidia GeForce 7600 GT

Under windows I'm using 1280x1024.

I tried different drivers using 'Additional drivers (jockey-kde / jockey-gtk), right now using nvidia_304.116 via jockey-gtk: 'This driver is activated but not currently in use.'
Trying different drivers doesn't yield different resolutions, and in Displays my screen doesn't get recognized. Display Unknown.

Via https://wiki.ubuntu.com/X/Config/Resolution I tried 'Adding undetected resolutions'.

$ cvt 1280 1024



# 1280x1024 59.89 Hz (CVT 1.31M4) hsync: 63.67 kHz; pclk: 109.00 MHz

Modeline "1280x1024_60.00"  109.00  1280 1368 1496 1712  1024 1027 1034 1063 -hsync +vsync

after which

$ xrandr --newmode "1280x1024_60.00"  109.00  1280 1368 1496 1712  1024 1027 1034 1063 -hsync +vsync

This will add the mode to the list, but as TV-0 disconnected. I'm not able to use the mode.

Screen 0: minimum 8 x 8, current 1024 x 768, maximum 4096 x 4096

VGA-0 connected primary 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm

   1024x768       60.0*+

   1360x768       60.0     59.8  

   1152x864       60.0  

   800x600        72.2     60.3     56.2  

   680x384        60.0     59.8  

   640x480        59.9  

   576x432        60.1  

   512x384        60.0  

   400x300        72.2     60.3     56.3  

   320x240        60.1  

TV-0 disconnected (normal left inverted right x axis y axis)

  1280x1024_60.00 (0x26c)  109.0MHz

    h: width  1280 start 1368 end 1496 total 1712 skew    0 clock   63.7KHz

    v: height 1024 start 1027 end 1034 total 1063           clock   59.9Hz

From here I don't know what I'm supposed to do. Having done this doens't change anything yet. After rebooting this TV-0 mode is lost.

Trying to add the mode:

$ xrandr --addmode TV-0 1280x1024_60.00

X Error of failed request:  BadMatch (invalid parameter attributes)

  Major opcode of failed request:  140 (RANDR)

  Minor opcode of failed request:  18 (RRAddOutputMode)

  Serial number of failed request:  25

  Current serial number in output stream:  26

Is this wrong?

Installed inxi:

inxi -G

Graphics:  Card: NVIDIA NV44 [GeForce 6200 LE] 

           X.Org: 1.14.5 drivers: nvidia (unloaded: fbdev,vesa,nouveau) Resolution:     [email protected] 

           GLX Renderer: GeForce 6200 LE/PCIe/SSE2 GLX Version: 2.1.2 NVIDIA 304.116