Microsoft pushed windows update today, but still did not amend my old pen electricity to be able to adjust the brightness problem. In Microsoft's discussion area, there are already a large number of users who reflect no problem before but update to 1803 No brightness
https://answers.microsoft.com/…/4007abca-f113-4360-9d47-a0e…
It was learned from the discussion that if your pen and I are lenovo x201, you can download and install the following old drivers to solve the problem
https://download.lenovo.com/…/pc/pccbbs/mobiles/80d861ww.exe
Other old pen users have to continue to search for solutions or 1803 Anti-installation in google climbing.
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