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HDMI to TV keeps dimming in and out?

rated 0 times [ 0] [ 0] / answers: 1 / hits: 16672 / 2 Years ago, thu, september 22, 2022, 1:59:42

I connected my Asus ZenBook running Ubuntu 13 to my TV (Panasonic) via HDMI. My main problem is that when I'm watching a movie the screen keeps dimming in and out. It doesn't dim all the way out, just becomes darker for a few seconds and then gradually brightens back to normal, then after a few minutes dims again and so on.

Tried using different video players like VLC, Dragon, and the built in video player, but to no avail. And have not been able to find any useful threads on the subject. Please help.. my girlfriend might leave me or decline to come over if we have to keep watching movies only on the laptop.

I'll be happy to post any additional info needed to solve this.

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lasagnerhead

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answered 2 Years ago whipstder · Accepted Answer

Many modern TVs with LED dim the backlight. The most bright point oft the picture (50% of the color range for example) will be 100% brightness of the pixel, and the backlight dims to 50%.
This is called dynamic contrast.