ADA: backlight not working
Hi all,
I have a Lenovo Pro 5 laptop (16ARX8), with dual gpu, integrated amd and nvidia (AD107M), From EFI firmware it can work in 2 modes, "Switchable" (dual gpu) and "discrete" (nvidia only), issue reported is in discrete mode (nvidia only).
PC boots properly, but during boot bavcklight goes off, and never come back on. I can login, and wayland starts and run properly, i can see all from ssh, but the screen is black.
I found a first workaround, disabling ACPI in one particular nouveau file, i can have backlights on, (cannot tune it anyway, fixed at 100%).
Attaching some documents
~ inxi -GSC -xx ✔ at 23:50:28
System:
Host: yamato Kernel: 6.9.0-rc1-yamato-devel-00062-g3259d9fad197 arch: x86_64
bits: 64 compiler: gcc v: 13.2.1
Desktop: wayfire v: 0.9.0-982605df lm: seatd Distro: Arch Linux
CPU:
Info: 16-core model: AMD Ryzen 9 7945HX with Radeon Graphics bits: 64
type: MT MCP arch: Zen 4 rev: 2 cache: L1: 1024 KiB L2: 16 MiB L3: 64 MiB
Speed (MHz): avg: 1537 high: 5439 min/max: 400/5461 cores: 1: 3381 2: 400
3: 4664 4: 4110 5: 400 6: 400 7: 5439 8: 400 9: 3108 10: 400 11: 400 12: 400
13: 400 14: 400 15: 4293 16: 400 17: 400 18: 400 19: 400 20: 400 21: 3514
22: 400 23: 400 24: 400 25: 400 26: 400 27: 4838 28: 400 29: 3596 30: 400
31: 3466 32: 400 bogomips: 159752
Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm
Graphics:
Device-1: NVIDIA AD107M [GeForce RTX 4060 Max-Q / Mobile] vendor: Lenovo
driver: nouveau v: kernel arch: Lovelace pcie: speed: 2.5 GT/s lanes: 8
ports: active: eDP-1 empty: DP-1,DP-2,HDMI-A-1 bus-ID: 01:00.0
chip-ID: 10de:28e0
Device-2: Chicony Integrated Camera driver: uvcvideo type: USB rev: 2.0
speed: 480 Mb/s lanes: 1 bus-ID: 3-2.4:4 chip-ID: 04f2:b7b6
Display: wayland server: X.org v: 1.21.1.11 with: Xwayland v: 23.2.4
compositor: wayfire v: 0.9.0-982605df driver: gpu: nouveau display-ID: 1
Monitor-1: eDP-1 model: BOE Display 0x0b11 res: 2560x1600 dpi: 188
diag: 407mm (16")
API: EGL v: 1.5 platforms: device: 0 drv: nouveau device: 1 drv: swrast
gbm: drv: nouveau surfaceless: drv: nouveau wayland: drv: nouveau x11:
drv: nouveau
API: OpenGL v: 4.5 compat-v: 4.3 vendor: mesa v: 24.0.4-arch1.1 glx-v: 1.4
direct-render: yes renderer: NV197 device-ID: 10de:28e0