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Screen upgrade for W550s - brightness control

W530/W540/W541/W550 Series
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wujstefan
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Screen upgrade for W550s - brightness control

#1 Post by wujstefan » Thu Apr 23, 2020 4:51 am

Hello there,

I have found a B156HAN01.2 panel lying around, and a great shaped cheap W550s to get. Since this system stock display is crappy, a replacement is what comes to my mind.

There are some reports that replacement panels have brightness control issues in those systems. Be it truth?
Too many thinkpads not enough time!
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RealBlackStuff
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Re: Screen upgrade for W550s - brightness control

#2 Post by RealBlackStuff » Thu Apr 23, 2020 5:57 am

W550s has an LCD whitelist, causing brightness control on non-approved LCDs to not work, but only under Windows.
Either rewrite the EDID, or install Linux.
Or, check if they can also do LCD-removal etc. on W550s: https://www.techinferno.com/index.php?/ ... elist-mod/

More info: http://forum.notebookreview.com/threads ... ax.774101/
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