I’m sad to say I have the same problem. I got my laptop, Acer Aspire 5672 x1600, 2 days ago and the noise was the first thing I noticed when I did my first Blender render.
Here is the email I sent to Acer describing the problem. I though it was the LCD screen since I had the same problem with different drivers. I’ve tried both the drivers form their website and the Omega drivers. Very frustrating.
“This laptop is AMAZING! The hardware, the design, the feature, the price—it’s all excellent. It’s as if this thing was designed specifically for me.
However, I was very disappointed to find out that my screen was displaying colors incorrectly.
Bright colors and pure blacks look great.
But medium to dark colors produce a dithering effect when displayed on the screen. It is most apparent when a solid block of a dark color, suck as a grey, dark green, or dark blue, is displayed. It appears to be speckled as if some pixels are darker than others. Although the problem is less noticeable in more organic pictures where the colors are constantly transitioning—it still makes the pictures look dull and blurry. It looks as if the screen is coved in a layer of dirt or everything is being rendered with “ambient occlusion”. It almost looks like there are tiny pixels sized pockets of air under the anti-glare coating causing the light transmitted by certain pixels to bend slightly more then others.
The problem is consistent across the entire area of the screen.
What I find strange is if I go into a graphics program, such as InkScape, and display a block of color that produces the anomaly, I can remove the speckling by shifting one of the RGB components 5 to 10 units in either direction (on a 256 unit scale AKA 8-bits). All the colors I’ve attempted to produce are 24-bit (8-bits per RGB component) and the screen is set to 32-bits (8-bits per RGB component plus 8 for the alpha channel.)
I first noticed the problem the first time I turned on the Laptop. I noticed the Acer splash screen that displayed while the BIOS was loading looked exceptionally dull, murky, and blurry.
I’ve tried your default ATI drivers and the latest Catalyst drivers from ATI. I’ve uninstalled and reinstalled both to make sure it wasn’t an installation error.
In all 4 cases the color-bit-depth was set to 32-bits and the screen resolution was 1280 X 800.
I’ve tried tweaking the gamma/contrast/brightness settings from ATI’s control panel. This did help the screen look less “washed out” and removed some blooming effects, but it did not correct the speckling.
I bought this laptop for 3D modeling/texturing/rendering as well as designing 2D vector graphics; therefore it is imperative that the problem be rectified or my money refunded. I really hope you can find a solution to my problem because I REALLY LIKE THIS LAPTOP (other then this aforementioned problem).
Thanks for the help.
-Lyall Jonathan xxxxxxxxx”
Here is the email I sent to Acer describing the problem. I though it was the LCD screen since I had the same problem with different drivers. I’ve tried both the drivers form their website and the Omega drivers. Very frustrating.
“This laptop is AMAZING! The hardware, the design, the feature, the price—it’s all excellent. It’s as if this thing was designed specifically for me.
However, I was very disappointed to find out that my screen was displaying colors incorrectly.
Bright colors and pure blacks look great.
But medium to dark colors produce a dithering effect when displayed on the screen. It is most apparent when a solid block of a dark color, suck as a grey, dark green, or dark blue, is displayed. It appears to be speckled as if some pixels are darker than others. Although the problem is less noticeable in more organic pictures where the colors are constantly transitioning—it still makes the pictures look dull and blurry. It looks as if the screen is coved in a layer of dirt or everything is being rendered with “ambient occlusion”. It almost looks like there are tiny pixels sized pockets of air under the anti-glare coating causing the light transmitted by certain pixels to bend slightly more then others.
The problem is consistent across the entire area of the screen.
What I find strange is if I go into a graphics program, such as InkScape, and display a block of color that produces the anomaly, I can remove the speckling by shifting one of the RGB components 5 to 10 units in either direction (on a 256 unit scale AKA 8-bits). All the colors I’ve attempted to produce are 24-bit (8-bits per RGB component) and the screen is set to 32-bits (8-bits per RGB component plus 8 for the alpha channel.)
I first noticed the problem the first time I turned on the Laptop. I noticed the Acer splash screen that displayed while the BIOS was loading looked exceptionally dull, murky, and blurry.
I’ve tried your default ATI drivers and the latest Catalyst drivers from ATI. I’ve uninstalled and reinstalled both to make sure it wasn’t an installation error.
In all 4 cases the color-bit-depth was set to 32-bits and the screen resolution was 1280 X 800.
I’ve tried tweaking the gamma/contrast/brightness settings from ATI’s control panel. This did help the screen look less “washed out” and removed some blooming effects, but it did not correct the speckling.
I bought this laptop for 3D modeling/texturing/rendering as well as designing 2D vector graphics; therefore it is imperative that the problem be rectified or my money refunded. I really hope you can find a solution to my problem because I REALLY LIKE THIS LAPTOP (other then this aforementioned problem).
Thanks for the help.
-Lyall Jonathan xxxxxxxxx”
when u look at the bios screens its not there, so i'm hoping this is some software issue that we can figure out and fix. this laptop would be perfect if i could get rid of this noise
