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Windows 7: vga cable - screen resolution

30 Jun 2011   #1

7 Prof. 64 Bit
vga cable - screen resolution


I would appreciation some help or pointing me to where I can get help.

Running 64bit 7 professional on Dell lattitude 6420 and an external magnovox display thorugh the docking station. When I restart the computer or wake from sleep, the monitor flickers for about 5 minutes until it settles down, but evenually settles down and displays at 1440x900, the monitors native resolution. When I go to display settings, windows 7 recognizes the "Magnovox TV" as the display.

I suspected somthing bad with the VGA cable and changed to a different, newer, one. When I do this, I do not get the lcd flicker, but I do not have the option to display in 1440x900 and when I go to display settings it recongizes only a "Generic npnp monitor."

Why, when I switch cables does it no longer recognize the monitor brand and not give me the display resolution I want? I have resarted the compuer a bunch of times, tried unconnecting and reconnecting. Also, I have looked at the nvidia settings to create a custom resolution and 1440x900 resolution fails the test using BOTH cables. When I switch the cable back it agian recongizes the magnovox lcd and gives me the 1440x900 option.

Thanks in advance for any tips.

My System SpecsSystem Spec
01 Jul 2011   #2

Windows 7 Home Premium 64-bit SP1

All I can think of is that you have a defective cable. Although it is fairly rare, the cable could have had a small thing done wrong in manufacturing.
Why did you need a new cable if the old one works just fine?
My System SpecsSystem Spec
02 Jul 2011   #3

W7 Professional x64

I don't know about you, but 5 minutes of flickering is not ok with me lol. May seem silly, but have you tried the cable the other way around?
My System SpecsSystem Spec

05 Jul 2011   #4

7 Prof. 64 Bit

The old cable provides the proper resolutions 1440x900 but flickers.

The new cable does not flicker but displays only 1024x768.

Any ideas?
My System SpecsSystem Spec
04 Jan 2012   #5

windows 7 professional x32

I have exactly the same problem - did you manage to fix this?
My System SpecsSystem Spec

 vga cable - screen resolution

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