Streaming Video or Audio May Be Distorted When Adjusting the Screen Brightness with the Keyboard Hotkeys

Distortion While Adjusting Brightness

If you encounter a situation where the audio on your Dell laptop becomes distorted (cracks, pops, drops, so on) or the video stops responding momentarily or stutters when you attempt to adjust using the keyboard shortcut keys. This is caused by changing the LCD screen brightness during playback.

Adjusting the display brightness using the keyboard generates multiple processor interrupts and these interrupts can affect the playback of video or audio on the system regardless of the multimedia source.

This effect may be more evident on some system configurations than it is on others.

No cause information is available.

This issue is not a fault, but simply a limitation of the operating system.

The solution is to not manually adjust the display brightness during playback. The issue only occurs when the keyboard function key shortcut is pressed and held. Momentary function key adjustments (one second pause between key presses) to adjust the brightness will not cause this distortion.

If a brightness change is needed, you should pause the playback and make your brightness adjustment then resume the playback or make adjustments with momentary key presses.