Issues setting brightness


  1. Posts : 16
    windows 10
       #1

    Issues setting brightness


    Greetings...I have a strange issue I haven't been able to sort out.

    I have a 10-year old Acer Aspire 5740G-6395 which was pretty good back in its day. I bought a new laptop last year and was just tinkering around with this one during WFH and put an SSD in it. Suddenly this thing is a workable machine again. Went from 10 minutes booting up with the old HD to just over 30 seconds. Since I went from a 320 gig HD to a 120 gig SSD I opted for a clean install.

    Now here's the issue: the screen brightness settings have no effect. This is true whether I use the slider bar in the notifications screen, the one in Settings>Display, or if I use the key commands (Fn/left or right arrow) on the keyboard.

    I have the latest Radeon Mobility 5650 driver from the AMD website from 2015 or 2016.

    Not sure what to do and was wondering if anyone had any insight. It's a 10 year old computer that I was starting to think about donating when I decided to spend $20 on the SSD so I don't want to spend a ton of time on it, but now that this thing is functional again it's nice to have as a backup machine. I don't know if its a Windows problem, a driver problem, or what it might be.
      My Computers


  2. Posts : 1,867
    Windows 10 Pro 2004 20H1
       #2

    I would go into Device Manager (right-click on the Start icon and select from the list), locate the monitor, and check for updated drivers.

    P.S. I grew up in Columbus.
      My Computer


  3. Posts : 16
    windows 10
    Thread Starter
       #3

    OldNavyGuy said:
    I would go into Device Manager (right-click on the Start icon and select from the list), locate the monitor, and check for updated drivers.

    P.S. I grew up in Columbus.
    I thought of that but according to the AMD website I have the latest Driver for the Radeon Mobility 5000 series (this old warhorse has the 5650).

    (been in central Ohio for 25 years; have lived everywhere from Dublin to Pickerington and several points in between)
      My Computers


  4. Posts : 16
    windows 10
    Thread Starter
       #4

    Just wanted to bring this back up to mention that I did find a solution to this issue in this post: Fix: Windows 10 Screen Brightness Control Not Working | Windows OS Hub

    In my case it was editing the registry as set forth in the middle of that post. Specifically KMD_EnableBrightnessInterface2 needs to be changed from 1 to 0.
      My Computers


 

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