Screen brightness changes after waking up from sleep in Windows: causes, solutions
The problem with changing the brightness of the screen after waking up from sleep is usually found on laptops and tablets. Many users complain that after switching from hibernation, their device independently changes the lighting settings to maximum or, conversely, to minimum.
One of the main reasons for constantly changing brightness in Windows is the adaptive contrast setting. This function is designed to automatically decrease the indicator in the dark and increase it when it is very light around. This can significantly reduce eye strain during operation. Unfortunately, the technology does not always work as it should, so you need to enable and disable the option at your own discretion.
In addition, in some cases, the problem may be related to other malfunctions in the system. Below we will consider all the options for solving this problem.
Method 1. Disable adaptive brightness
As noted at the beginning, the main reason for changing settings is when adaptive brightness is on. Disable it:
- Go to the Control Panel by right-clicking on the Windows icon.
- Go to the Power supply section and then to Power scheme settings.
- Select: Change advanced power settings.
- In the new window, expand the Display section and then Turn on adaptive brightness.
- Disable the options: from the mains and the battery, so that the brightness change does not occur in automatic mode.
- Then press: Apply and Ok.
Method 2. Update Windows to the latest version
Some versions of Windows, notably 1809, are known to cause brightness to change after resuming from sleep. Thus, updating your device to the latest version may help fix the problem.
- Go to the Control Panel again.
- Go to Windows Update and select Check for Updates.
- When the latest version of the system is installed, restart your computer.
Method 3: Run Power Troubleshooter
Windows has a built-in package of tools to fix most system problems. Therefore, you need to use the troubleshooting wizard and check if that helps.
- Open Control Panel, and select the Troubleshoot section.
- Go to the Energy Optimization subsection.
- In the next window, click: Next to start the troubleshooting wizard.
- The system will diagnose and correct any problems, if any.
Method 4. Update / Install Display Drivers
Surface Pro devices use Intel UHD Graphics, which must be installed upon purchase. In many cases, people encountering brightness change issue use the default display driver that comes with Windows updates. To install the software, you should visit the Intel official website and download the correct one for your device.
If you already have Intel drivers installed, you should update them. This can be done through the device manager or using third-party programs that monitor the relevance of downloaded applications:
- Right-click on the Windows icon and select Device Manager.
- In the window that opens, expand the Video adapters section.
- Click on the Intel driver and update it by right-clicking on it;
- In the next dialog box, click on the item: Search automatically for updated drivers.
- Wait for the installation to complete and reboot the system.
Note: In some cases, installing Nvidia DCH drivers helps, but this is only relevant for Surface Pro devices.
Method 5. Roll back the video adapter drivers
Reverting to a previous version of the driver is usually not a good idea, however, if the problem with resetting brightness is caused by recent updates, you can try this method. Of course, provided that the previous options could not help.
- Open Device Manager and go to the Display adapters section again.
- Right click on the driver and select Properties.
- In the new window go to the Driver tab.
- Select an option: Rollback.
- Then confirm everything and wait for the process to complete.
- Reboot your device.