Gradient banding help

boden08 · 5 May 2011 at 21:22

Hi all,
just looking for some info on my problem, i have gradient banding on everything. anything that has any type of gradient i get banding through it
, games, videos, pictures, internet and even applications and desktop.

my system specs are phenom II 965be
asus m4a88t-m
corsair tx 650
kingston 1333mhz
asus gtx460
wd hdd 7200rpm blue

With this setup i am getting the problem with my 23" lg 1080p monitor, aoc 17" and my lg 1080p tv.

I removed the gpu and ran the onboard (hd 4350 ati) and i was still getting this problem.

I decided that i would strip my gpu from my second system ( 9800gt ) the problem still continued, so it cant be the gpu or monitor as i have tried three different types of each.

i stripped the components from the tower and optical drive and gpu to run it as basic as i could on a bench, the problem still continued.

with my other system i get no gradient problems so what could this be, i have ran tests and everything seems to run perfect and passes all monitor/display tests apart from the gradient. my motherboard and cpu have both been sent off and tested by the company that i ordered the items from and came back with no fault.

I urgently need help with this as i am stuck with what to do and yes my colour depth is set to 32-bit true colour. my lg monitor is 16.7 mil and the aoc is 16.2 mil (16 mil), but both are tn so they are 6-bit i think.

Thank in advance.

95thrifles · 5 May 2011 at 22:37

You tried a different cable?

Oma-Lan-DP · 5 May 2011 at 23:12

change the cable or try the connections (i.e. bent pins possibly) on the monitor & gpu.

boden08 · 6 May 2011 at 16:49

Hi all,
Ok tried a hdmi, dvi and a vga cable along with another dvi, still did not solve the problem.

Thanks for the ideas

Xelene · 6 May 2011 at 17:10

It's the screen(s) not your computer.

boden08 · 7 May 2011 at 00:51

but i have tried 3 different screens ( aoc 17", lg 23" hd and lg tv hd) and it shows on all three, but worse on the 23" hd than the rest.

Thanks for the help guys

95thrifles · 7 May 2011 at 11:18

Gradient banding would lead me to think
a) screens - youve tried 3 different ones so this isnt it
b) gfx card - youve tried more than one, incl onboard so unlikely
c) cable - youve tried more than one
d) OC? If you have one try removing it and testing, similarly if PCI-E freq is not 100 set it to 100, if it is, try 101
e) If still no joy, then Id suggest its the actual PCI-E controller, you say the board was tested but did they test this or just that it boots?

boden08 · 7 May 2011 at 13:04

No overclock on this system. they said they ran their motherboard and cpu fault finding program and did some display tests.

http://www.lagom.nl/lcd-test/gradient.php

This test for the gradient states it should be smooth, this one is not so bad on my system but i can still see banding through the gradient. another example is the application STEAM, With steam background it goes from light grey to black/dark grey top to bottom and this is very bad, the banding dominates the screen. does any one else have steam to see if they get this.

Thanks again guys