A lot of peoples including myself can’t wait to try out the latest version of Windows which is the Windows 8 Release Preview. Everything work like a charm expect the screen brightness issue which cause a lot of trouble to me since the Consumer Preview version. Every time after my computer resume from sleep, hibernate or boot up after a shutdown, the screen’s brightness will automatically adjust to the lowest. No matter how hard I punch on the brightness increase button, it will automatically go down to zero again.
After some research and try-error, I finally able to fix this troublesome problem. If you are facing the same problem, you might want to go through the list one by one. Some might work for you, some might not, depending on your computers.
Possible Solution #1 – Restart (Temporary Fix Only)
A temporary solution which I use previously is do a complete restart. Complete restart mean boot up your computer, then click on restart power option. This will cause Windows kernel completely restart (Shutdown and boot up again won’t cause the kernel to restart. If you want to know why, here is the technical explanation). Windows kernel restart which also mean the driver that control screen brightness also get restarted and hopefully it go back to normal and stop torturing your eyes.
Possible Solution #2 – Disable Adaptive Brightness in Power Option
Some user reported that disabled the adaptive brightness in power option help fix this problem, although it didn’t work for me but here is how you can disable the adaptive brightness in step by step:
Step 1: Right-click on the power icon in the notification area then click Power Options to bring up the Power Options. Optionally you can open Power Options from Control Panel if you want.
Step 2: Depend on which power plans you are using now (default is Balanced), click on the Change plan settings on the right hand-side of the plan which you are using now. For example, I’m using Energy Star power plan, so I click on the Change plan settings beside Energy Star.
Step 3: Click on the Change advanced power settings on the bottom
Step 4: Look for Display then Enable adaptive brightness. Change to Off for both On battery and Plugged in. Then click OK.
Step 5: You may want to restart your computer to see if the problem go away or not. Optionally you might want to turn off the adaptive brightness for all power plans you have just in case you switch power plan later on.
Possible Solution #3 – Install / Update Driver
If disable the adaptive brightness in power option didn’t work for you, you might want to update or install the driver for windows manually like me. Driver from Windows Vista or Windows 7 will work on Windows 8 since they all using the Windows NT kernel. You need to search for your respective vendor website to download the driver, install and configure the screen brightness / adaptive brightness control (some have their own power option software to control or disable the adaptive brightness)
I’m currently using Lenovo Ideapad U460, so I went ahead to download the Lenovo Energy Management from the driver list. After installing the driver, the problem still remain. Then I realize Lenovo have their own software to control the brightness. Changing the brightness through the software still fail for me, but I found the Ambient Light Sensor Control in the software by luck. After I disable the Ambient Light Sensor Control, the problem go away! Yeah, bingo!
That is all the solutions I found and tested. Hopefully it can provide you some help in solving the screen brightness problem in your Windows 8 computer. Leave me a comment if you think the solution is helpful.