Hey folks! Yet another problem with adjusting screen (and keyboard) brightness. I have a nvidia GPU and amd CPU in my new laptop
inxi -Fy
System:
Host: lucas-notebook Kernel: 6.1.31-2-MANJARO arch: x86_64 bits: 64
Desktop: KDE Plasma v: 5.27.5 Distro: Manjaro Linux
Machine:
Type: Laptop System: Dell product: Dell G15 5525 v: 1.6.1
serial: <superuser required>
Mobo: Dell model: 03MJW9 v: A01 serial: <superuser required> UEFI: Dell
v: 1.6.1 date: 12/15/2022
Battery:
ID-1: BAT1 charge: 57.5 Wh (100.0%) condition: 57.5/56.0 Wh (102.6%)
CPU:
Info: 6-core model: AMD Ryzen 5 6600H with Radeon Graphics bits: 64
type: MT MCP cache: L2: 3 MiB
Speed (MHz): avg: 1499 min/max: 1600/4563 cores: 1: 1600 2: 1367 3: 1600
4: 1600 5: 1361 6: 1600 7: 1600 8: 1368 9: 1359 10: 1343 11: 1600 12: 1600
Graphics:
Device-1: NVIDIA GA107BM [GeForce RTX 3050 Mobile] driver: nvidia
v: 530.41.03
Device-2: AMD Rembrandt [Radeon 680M] driver: amdgpu v: kernel
Device-3: Microdia Integrated_Webcam_HD driver: uvcvideo type: USB
Display: wayland server: X.org v: 1.21.1.8 with: Xwayland v: 23.1.1
compositor: kwin_wayland driver: X: loaded: amdgpu,nvidia
unloaded: modesetting,nouveau dri: radeonsi gpu: nvidia,amdgpu
resolution: 1536x864
API: OpenGL v: 4.6 Mesa 23.0.4 renderer: AMD Radeon Graphics (rembrandt
LLVM 15.0.7 DRM 3.49 6.1.31-2-MANJARO)
Audio:
Device-1: NVIDIA driver: snd_hda_intel
Device-2: AMD Rembrandt Radeon High Definition Audio driver: snd_hda_intel
Device-3: AMD ACP/ACP3X/ACP6x Audio Coprocessor driver: snd_pci_acp6x
Device-4: AMD Family 17h/19h HD Audio driver: snd_hda_intel
API: ALSA v: k6.1.31-2-MANJARO status: kernel-api
Server-1: PulseAudio v: 16.1 status: active
Network:
Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
driver: r8169
IF: enp3s0 state: down mac: 04:bf:1b:50:70:db
Device-2: MEDIATEK MT7921 802.11ax PCI Express Wireless Network Adapter
driver: mt7921e
IF: wlp4s0 state: up mac: bc:f4:d4:3e:31:e5
Bluetooth:
Device-1: Foxconn / Hon Hai MediaTek MT7921 Bluetooth driver: btusb type: USB
Report: rfkill ID: hci0 state: up address: see --recommends
Drives:
Local Storage: total: 1.82 TiB used: 27.25 GiB (1.5%)
ID-1: /dev/nvme0n1 vendor: A-Data model: LEGEND 700 size: 1.82 TiB
Partition:
ID-1: / size: 1.79 TiB used: 27.25 GiB (1.5%) fs: ext4 dev: /dev/nvme0n1p2
ID-2: /boot/efi size: 299.4 MiB used: 308 KiB (0.1%) fs: vfat
dev: /dev/nvme0n1p1
Swap:
Alert: No swap data was found.
Sensors:
System Temperatures: cpu: 46.2 C mobo: N/A gpu: amdgpu temp: 44.0 C
Fan Speeds (RPM): N/A
Info:
Processes: 328 Uptime: 11m Memory: available: 30.59 GiB
used: 4.08 GiB (13.3%) Shell: Zsh inxi: 3.3.27
but I cannot adjust the brightness. I tried several different thins, such as using acpilight, adding the grub parameters GRUB_CMDLINE_LINUX_DEFAULT="quiet splash udev.log_priority=3 acpi_backlight=video" (I tried with vendor as well). If I type ls /sys/class/backlight/ I get nvidia_wmi_ec_backlight.
If I run sudo xbacklight -set 50 (for example), then
>cat /sys/class/backlight/nvidia_wmi_ec_backlight/brightness
128
>cat /sys/class/backlight/nvidia_wmi_ec_backlight/actual_brightness
0
Adn the actual_brightness does not change no matter that I do.
Any tips on what I can do? I’d really love to fix this! I hava manjaro in a intel+nvidia system (from avell) and did not encounter this issue.