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Dell Inspiron brightness constantly changing (sh.itjust.works)

submitted 2 months ago by DeltaWingDragon@sh.itjust.works to c/linuxquestions@lemmy.zip

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cross-posted from: https://sh.itjust.works/post/47508691

When my laptop is on battery, the brightness changes depending on what's on the screen.

It changes when I maximize or minimize a window, when I open or close a tooltip, when the visual bell goes off in my terminal, when I move my mouse onto something, when I'm watching a video with no input.

It is extremely annoying and I would like it to stop happening.

All the solutions I have seen only work for a Dell Inspiron with Intel CPU, and mine is AMD.

System stats
Hardware: Dell Inspiron 15 with AMD Ryzen 7 CPU, 16GB RAM, AMD Radeon graphics.

Software: Debian GNU/Linux 13 (trixie) with Linux 6.12.43 kernel and KDE Plasma 6.3.6 desktop

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[–] DeltaWingDragon@sh.itjust.works 2 points 2 months ago

It seems I can't boot from USB on this machine. The drive is recognized in the BIOS, but even when I add it to the sequence, it always boots from the main SSD. If I disable all options except the USB, it says "No bootable device found". When I start GRUB on my main drive, the USB doesn't show up.