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X220 IPS Waves & Flickering

X200/X201/X220 (including equivalent tablet models) and X300/X301 Series
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hyde
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X220 IPS Waves & Flickering

#1 Post by hyde » Mon Oct 31, 2011 9:38 am

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.

8/18/11 - X220 i5-2540M, IPS, Intel 6205 Wifi, 8GB, U2312HM
1/15/12 - S405 (Wife's), A6-4455M, 14", 4GB
7/02/15 - T450s i5-5300U, 14" FHD IPS, FP, 12GB
7/1/20 - T490 i5-10210U, 24GB, 14" FHD TS IPS, 512GB NVMe,
5/20/23 - T14 Gen 3 AMD 6650U, 1TB, 32GB, WUXGA

pianowizard
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Re: X220 IPS Waves & Flickering

#2 Post by pianowizard » Mon Oct 31, 2011 11:08 am

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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hyde
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Re: X220 IPS Waves & Flickering

#3 Post by hyde » Mon Oct 31, 2011 11:18 am

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. :?

8/18/11 - X220 i5-2540M, IPS, Intel 6205 Wifi, 8GB, U2312HM
1/15/12 - S405 (Wife's), A6-4455M, 14", 4GB
7/02/15 - T450s i5-5300U, 14" FHD IPS, FP, 12GB
7/1/20 - T490 i5-10210U, 24GB, 14" FHD TS IPS, 512GB NVMe,
5/20/23 - T14 Gen 3 AMD 6650U, 1TB, 32GB, WUXGA

Colonel O'Neill
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Re: X220 IPS Waves & Flickering

#4 Post by Colonel O'Neill » Mon Oct 31, 2011 9:06 pm

60Hz should be fine.

You may want to try this test:
http://www.lagom.nl/lcd-test/inversion.php
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Re: X220 IPS Waves & Flickering

#5 Post by Puppy » Thu Nov 03, 2011 6:47 am

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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hyde
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Re: X220 IPS Waves & Flickering

#6 Post by hyde » Thu Nov 03, 2011 10:38 am

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.

8/18/11 - X220 i5-2540M, IPS, Intel 6205 Wifi, 8GB, U2312HM
1/15/12 - S405 (Wife's), A6-4455M, 14", 4GB
7/02/15 - T450s i5-5300U, 14" FHD IPS, FP, 12GB
7/1/20 - T490 i5-10210U, 24GB, 14" FHD TS IPS, 512GB NVMe,
5/20/23 - T14 Gen 3 AMD 6650U, 1TB, 32GB, WUXGA

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