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mudman
04-02-2014, 7:31pm
my new led computer monitor has circles of vertical green lines showing.
would a HDMI cable from screen to the box solve this problem?
or is there another fix?

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how do i upload a screen dump of the problem

I @ M
04-02-2014, 8:09pm
how do i upload a screen dump of the problem

Take a photo of the monitor? :)

ricktas
04-02-2014, 8:56pm
The first thing I thought of was interference, Try moving the monitor or moving other electronic devices that are nearby..away from it.
Most things these days are supposed to be designed to absorb and 'neutralise' electrical/electronic interference, but not all do.

second thing. cable that is not the best

third thing. update graphics card drivers (if there are updates available)

fourth thing. HDMI- get it, use the best video connection you can.

Mark L
04-02-2014, 9:12pm
.....
how do i upload a screen dump of the problem

Is it saved as JPEG??
Below right, under the Quick reply box, click Go Advance and attach you "photo" as normal.

ricktas
04-02-2014, 9:28pm
you will need to resize a screen dump to under 1024 pixels and 250kb just the same as you resize photos

mudman
04-02-2014, 9:51pm
Take a photo of the monitor? :)
DOH
why didn't i think of that?
thanks I@M

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you will need to resize a screen dump to under 1024 pixels and 250kb just the same as you resize photos
actually i meant print screen. i then pasted it into a word document. maybe i should have tried to create a bit map.
i will try all your other suggestions too
thanks Rick

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here isn an example of what i mean.
it is not too clear, but if you look around the head area and the right hand side you will see what i mean
cheers

ricktas
05-02-2014, 6:25am
Sorry, but I cannot see anything on that photo. So at a guess it is not affecting the output images, it is only visible to those who look at your screen.

arthurking83
05-02-2014, 11:17am
I'm thinking it's an interface issue.

ie. as said .. maybe a HDMI cable will help.

What screen is it and how is it connected?

Trying to keep the question short and possible reasons for the banding:

Lets say you have a u-bute-new fangled aRGB capable screen connected via your D-Sub interface.

D-Sub is only capable of a certain amount of bandwidth .. ie. No of colours+refresh rates+resolution capability .. etc.

DVI increases that capability and HDMI increases that again.

If the screen can't receive the correct amount of bandwidth in a timely manner, it will try to interpolate some of that data the best way it can.

So.. maybe even a DVI cable may help (remembering that it hasn't been explained how you've connected it).

Note: sometimes even just connecting a HDMI cable can 'unlock' hidden features in the OSD menu.

This is not THE definitive answer to your issue(given the limited info given) tho.

So may other reasons that can cause this.
eg. you may have set the software and edited the image in aRGB, and even tho your screen can be aRGB capable, it may only be set to display in sRGB.
Your graphics card/chip may not even be capable of displaying the correct image to the screen
Are there clashing ICM profiles being loaded

.. and so on and on

the list is endless and without knowing your particular details it'd be hard to assess properly.

ALSO! have you calibrated it? Do you have a calibrations device .. if not, now would be a good time to get one.

One thing to know tho, as Rick has already said .. the image of the wren doesn't display any banding/posterization .. but the colours of the blue looks a tad oversaturated.
Me thinks(going by that) that there is a colourspace inconsistency on your system.

mudman
05-02-2014, 12:24pm
thanks AK for your input, much appreciated.
the first thin i will try is a HDMI cable. if this does not fix the problem i will look at the calibration and other issues, such as driver updates, and the like
cheers