# Linux version not reading screen brightness or controling it

**URL:** <https://forum.realdash.net/t/linux-version-not-reading-screen-brightness-or-controling-it/7067>\
**Category:** Bugs and troubleshooting\
**Created:** [December 3, 2024, 2:39am UTC](https://forum.realdash.net/t/linux-version-not-reading-screen-brightness-or-controling-it/7067 "2024-12-03T02:39:19Z")\
**Posts on this page:** 1\
**Showing post:** 7

<div class="post-metadata">

**Author:** ![smwoodward](https://forum.realdash.net/letter_avatar_proxy/v4/letter/s/a587f6/32.png) [@smwoodward](https://forum.realdash.net/u/smwoodward)\
**Post date:** [December 7, 2024, 10:18pm UTC](https://forum.realdash.net/t/linux-version-not-reading-screen-brightness-or-controling-it/7067/7 "2024-12-07T22:18:31Z")

</div>

@Herleybob can you check on your Orange Pi 5 if this command also controls the brightness?

echo 100 | sudo tee /sys/class/backlight/backlight/brightness

I’m thinking that if it’s in the sys tree that might make it more universal in controlling the brightness than using ddcutil as ddcutil doesn’t work with some displays.

---

_[View the full topic](https://forum.realdash.net/t/linux-version-not-reading-screen-brightness-or-controling-it/7067)._