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Problem

Everything used to be fine until I broke my monitor (LG W2284F : 1680x1050) and I bought a new monitor (LG 25UM65-P: 2560x1080).

The Problem is when I try to install Ubuntu or any other linux-dist OS, after resolution detection Monitor Flickers.

Facts

Graphic Card is NVIDIA GForce 9500 GT. (used to support my previous monitor resolution with Ubuntu)

Monitor flickers not the screen , as long monitor buttons does not work.
I tried monitor with both DVI-D and HDMI cable.

What Have I Done?

Based on some topics and issues I tried booting with nomodeset and it works and let me install Ubuntu. Now, the only available resolution is 800x600 after and while installation.

xrandr does not work returning

xrandr: Failed to get size of gamma for output default
xrandr: Configure crtc 0 failed.

and also nvidia graphic drive installation asks for kernel v3.4.

Is there any solution to use my monitor default resolution?

$ lshw -c display
  *-display UNCLAIMED     
       description: VGA compatible controller
       product: G96 [GeForce 9500 GT]
       vendor: NVIDIA Corporation
       physical id: 0
       bus info: pci@0000:01:00.0
       version: a1
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress vga_controller bus_master cap_list
       configuration: latency=0
       resources: memory:fd000000-fdffffff memory:e0000000-efffffff memory:fa000000-fbffffff ioport:cc00(size=128) memory:fe980000-fe9fffff

$ xrandr --verbose
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 640 x 480, current 640 x 480, maximum 640 x 480
default connected primary 640x480+0+0 (0x17d) normal (normal) 0mm x 0mm
Identifier: 0x17c
Timestamp:  28516
Subpixel:   unknown
Clones:    
CRTC:       0
CRTCs:      0
Transform:  1.000000 0.000000 0.000000
            0.000000 1.000000 0.000000
            0.000000 0.000000 1.000000
           filter: 
  640x480 (0x17d)   22.4MHz *current
        h: width   640 start    0 end    0 total  640 skew    0 clock   35.0KHz
        v: height  480 start    0 end    0 total  480           clock   73.0Hz
Heartagramir
  • 121

2 Answers2

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You display adapter (nvidia) seems not receiving the DDC/CI data from the new screen.

As:

  • I can see from it LG 25UM65-P Specification Sheet it should support that. (Anyway any modern monitor should have this)

  • You have tried two digital cables DVI-D and HDMI without success.

So for solution:

  • It could be that DDC/CI sending feature is disabled in the monitor (I have one Dell monitor that offer possibility to disable it)

    Look for DDC/CI or EDID and enable it. (I looked at manual but does not seem there)

  • If you are using an adapter, look for a direct & relatively short cable.

  • A workaround when no EDID data available from monitor

    Create a /etc/X11/xorg.conf file that contains

    Section "Monitor"
    Identifier  "Configured Monitor"
    HorizSync       30.0 - 90.0
    VertRefresh     56.0 - 75.0
EndSection

    Values got from the user manual.

user.dz
  • 49,176
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Well I just solved the problem.

  • The Problem was the DVI-D cable type. so tricky there are two type of DVI Digital: Single link and Dual Link ... Just Bought a new DVI-D Dual Link and Problem was ... half resolved.

  • The other problem is that DVI-D Does not support Wide Resolution and based on this question and Linus Post It was all resolved.

Community
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Heartagramir
  • 121