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880
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✅ Solution
Tags:
screen
brightness
grub
Link:
🔍 See Original Answer on Ask Ubuntu ⧉ 🔗
URL:
https://askubuntu.com/q/818175
Title:
Screen brightness stuck at maximum
ID:
/2016/08/29/Screen-brightness-stuck-at-maximum
Created:
August 29, 2016
Upload:
April 8, 2024
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I found a bug report on launch pad describing the same problem and some solutions: Samsung 7 screen brightness
Basically ACPI is implemented improperly on your motherboard with Intel CPU and Radeon graphics. The solution is to add the parameters acpi_osi=linux and acpi_backlight=video to your kernel command lines in Grub. You can google how to modify grub kernel parameters and ask any questions you have on updating grub.