Horrendous dithering

Heya,

I've been getting this display issue ever since I purchased this laptop - at normal brightness (gamma, contrast and brightness at default in ATI CCC) there's some horrible dithering going on, both between whites and bright colors/grays, and between bright and dark colors. By dithering I mean, instead of a gradient, I get these jagged pixelated edges, which are atrocious if I watch a movie, look at a photo, or play gaems.

Just wondering is this more likely a screen defect or a driver issue? If it's a screen defect I'd be quite happy since I can then RMA this laptop without restocking fee and buy something with an intel.

 

Here are my examples:

1)
http://img69.imageshack.us/img69/2873/img7414z.jpg

This is what my SLR camera took. You can clearly see the ugly screen dithering between the white and bright colors border, and between the bright green and dark green border (same with other two colors). This dithering defect happens to ANY image/video etc which have both bright and dark colors.

Note: this photo was taken with the screen calibration at ALL default settings (gamma/contrast/hue/saturation/brightness)..



2)
http://img713.imageshack.us/img713/1852/gradienttesto.jpg

This is the original file I made in photoshop. Unless everyone's screen is all defective, you should all see very smooth gradient with this.

 

Sounds like a cheap panel, with maybe 6/8-bit color. It's that second green bar that screams 6-bit.

 

Quite a common issue with AMD graphics cards, mainly the consumer lines. Happens on my Toshiba laptop and my Asus as well, but I've never seen it on my desktop with an NVIDIA GPU.

Also, it can be caused by your monitor as well, if it isn't very good. Extremely noticeable on the Toshiba (which has the worst panel of my three machines, less noticeable on the Asus (which surprisingly has a decent enough panel), and on my desktop I haven't noticed it at all, even though it has a 6 bit TN panel.

 

Aww that means it's a common issue and not a "defect" per-say?

Man, my old (~1.5 year old) Lenovo Y450 has such a vibrant (e.g. pure red looks BLOOD RED, so red it can tire my eyes out if I stare at it for more than 30 seconds), bright (bright enough sometimes I turn down the brightness), and nondithering (gradients are absolutely smooth, picture-perfect) screen.

And both the Y450 and this new Acer have AUO screens... -,- did they suddenly start cutting budget or something?




edit:

so CZX58 Shadow, you're saying that it's half likely that it's an driver issue? My Y450, indeed, uses an Nvidia GT130M. Fits with your experience too (only desktop with NV).

 

Bump.

Hoping others have experiences relating this to share, or possibly some form of hotfix.

 

plug on of these laptop on a external screen it wont happens

it's the laptop panel as it does not hapens on my laptop with amd GPU

 

None with my M15x. I'm guessing it's normal cause people saw the same thing back with those older MBPs which only had 6 Bit color.

 

I complained to the retailer, and they authorized an RMA for me.

In half a months time I shall purchase an Acer 5820TG instead (have to wait because the refund is in store credits).


Edit: besides, I'm sick and tired of the AMD processor in this laptop, it bottlenecks games so much that I was TRYING to come up with excuses for the retailer to authorize an RMA for this heheh.

 

I don't think you'll be lucky as my 5820TG as a rather annoying dithering when using the 5650 too.

Using the Intel card this doesn't happen. It's pretty visible when using color #F8F8F8.

Will post pics later.

EDIT: Here they are:








Now, this doesn't happen everytime.