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PostPosted: Mon Oct 31, 2011 9:38 am 
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Joined: Fri Jul 08, 2011 8:12 pm
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I notice horizontal waves on my screen from bottom to top time to time under certain conditions, mostly visible when the screen has uniform color.You can try it with paint and use 127/127/127 (dark grey) and see if you get it. I can see it when I am typing this message with the white text box area. I am not sure if it is refresh rate or just normal operation. It doesn't bother me too much (yet) but I wanted to know if there were any adjustments I can try.

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8/18/2011 - X220, Intel 2540M, 12.5" IPS, FingerPrint, Webcam, BT, Intel 6205 Wifi, 8GB, U2312HM UltraSharp 23" IPS
1/15/2012 - S405 (Wife's), AMD A6-4455M, 14", 4GB RAM, Windows 8
7/02/2015 - T450s Intel i5-5300U, FHD IPS, FingerPrint, Webcam, BT, SSD, Intel 7265, 4GB


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PostPosted: Mon Oct 31, 2011 11:08 am 
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hyde wrote:
I wanted to know if there were any adjustments I can try.


Probably not. IPS screens have lower refresh rates than TN screens. Most people don't notice any flicker, but some do.

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PostPosted: Mon Oct 31, 2011 11:18 am 
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Is it 50hz?
I just played around with settings, and intel display properties have 50hz and 60hz options. I didn't want to try 60hz, but it is available there. Has anyone tried it? I don't want to fry my display board. :?

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8/18/2011 - X220, Intel 2540M, 12.5" IPS, FingerPrint, Webcam, BT, Intel 6205 Wifi, 8GB, U2312HM UltraSharp 23" IPS
1/15/2012 - S405 (Wife's), AMD A6-4455M, 14", 4GB RAM, Windows 8
7/02/2015 - T450s Intel i5-5300U, FHD IPS, FingerPrint, Webcam, BT, SSD, Intel 7265, 4GB


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PostPosted: Mon Oct 31, 2011 9:06 pm 
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Location: Toronto
60Hz should be fine.

You may want to try this test:
http://www.lagom.nl/lcd-test/inversion.php

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PostPosted: Thu Nov 03, 2011 6:47 am 
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Location: Prague, Czech Republic
Does it change with different brightness setting ?

It is very likely caused by this LCD screens don't flicker - or do they?

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PostPosted: Thu Nov 03, 2011 10:38 am 
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Yes, it does, but it is hard to pinpoint if it actually gets more noticeable at certain brightness or if there is something else that is causing it to get wavy like lower battery level? Higher processor? Fan spinning? Who knows. Under most conditions I barely notice it, it is only when I have a light gray or mostly unisome light color image.
While seeing the waves in regular screen, I did not see any problem using the link Colonel sent.

I will try 60hz and report back later.

_________________
8/18/2011 - X220, Intel 2540M, 12.5" IPS, FingerPrint, Webcam, BT, Intel 6205 Wifi, 8GB, U2312HM UltraSharp 23" IPS
1/15/2012 - S405 (Wife's), AMD A6-4455M, 14", 4GB RAM, Windows 8
7/02/2015 - T450s Intel i5-5300U, FHD IPS, FingerPrint, Webcam, BT, SSD, Intel 7265, 4GB


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