![]() ![]() Typically, restarting the computer resolves the issue for a period of time, but not every time. However, there are only two brightness levels effectively applied: When the indicator is all the way down the screen is as dim as it can go, and when the indicator is in any other position, beginning just one point above fully down and extending all the way to the top of its path, the screen runs at full brightness. ![]() The system is still remembering the brightness level selected, because as I leave the system for a while with the brightness indicated at, for instance, 50%, when I begin pressing the F5 (to reduce brightness) or F6 (to increase brightness) the indicator begins at 50% where I'd left it previously. Using the F5 and F6 keys to brighten and dim the screen, I see the indicator showing brightness going up or down, appropriate to the key I'm pressing, but the screen is fully bright in every position along that indicator other than all the way down at the bottom, when the screen immediately goes to fully dimmed. The issue is only with the integrated display on the laptop.įrom time to time, ranging from a few times each day to once or twice a week, the laptop screen will only allow either fully bright or fully dim in its brightness settings. This is a Dell Latitude 7400 2-in-1, running Windows 10 20H2, fully patched. I have only used laptops of the same model myself and so will focus on this. This issue has happened on multiple computers. I am an IT professional responsible for keeping this laptop running, along with several hundred of its siblings and ancestors. Full disclosure: This is a company-owned laptop. ![]()
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