After the last Update my display brightness slider is gone

As written in the Headline, I have no possibility to adjust my screenbrighness anymore. I have seen, that powerdevil has been updated as well as linux-firmware. So I asume that one of them is the culprit.


inxi -F
Host: Probook Kernel: 6.2.0-2-MANJARO arch: x86_64 bits: 64
Desktop: KDE Plasma v: 5.26.5 Distro: Manjaro Linux
Type: Convertible System: HP product: HP ProBook x360 435 G8 Notebook PC
v: N/A serial:
Mobo: HP model: 8886 v: KBC Version 45.16.00 serial:
UEFI: HP v: T80 Ver. 01.02.02 date: 05/05/2021
ID-1: BAT0 charge: 32.0 Wh (84.2%) condition: 38.0/45.0 Wh (84.3%)
Info: 6-core model: AMD Ryzen 5 5600U with Radeon Graphics bits: 64
type: MT MCP cache: L2: 3 MiB
Speed (MHz): avg: 1549 min/max: 1600/4288 cores: 1: 1600 2: 1397 3: 1600
4: 1397 5: 1600 6: 1600 7: 1397 8: 1600 9: 1600 10: 1600 11: 1600 12: 1600
Device-1: AMD Cezanne [Radeon Vega Series / Radeon Mobile Series]
driver: amdgpu v: kernel
Device-2: Luxvisions Innotech HP HD Camera type: USB driver: uvcvideo
Display: x11 server: XOrg v: 21.1.6 with: Xwayland v: 22.1.7 driver: X:
loaded: amdgpu unloaded: modesetting dri: radeonsi gpu: amdgpu
resolution: 1920x1080~60Hz
API: OpenGL v: 4.6 Mesa 22.3.3 renderer: AMD Radeon Graphics (renoir LLVM
15.0.7 DRM 3.49 6.2.0-2-MANJARO)

I solved it by my own. I changed boot option from acpi_backlight= vendor to acpi_backlight=native

1 Like

There is a way to change brightness by software, what is this?

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