XPS 15 Running Windows 11 with Insider Preview Builds is unable to adjust brightness

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otarter12

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Recently, I've had an issue with my XPS 15 9510. I'm unable to adjust my brightness settings, and some similar settings related to screen display, such as turning on night mode. When I press the brightness up or down buttons, nothing changes. The pop up UI that shows the brightness bar seems to move up and down (but only between two settings, no matter how many times I press the button) but the brightness itself does not change. The same issue occurs when I try to adjust the brightness manually in the action center, using the slider. The slider moves up and down, but the brightness does not ch

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