This is a fresh install of Manjaro 21.2.4 (Kernel 5.15.25-1-MANJARO) on KDE Plasma. I am unable to change the brightness for my screen, if I try to change the brightness it will say that it’s changing but in reality nothing happens so the brighness is constantly at 100%.
My installation is on a Lenovo laptop with an integrated AMD GPU and a dedicated NVIDIA GPU.
I quite like Manjaro and I’ve been using it for months without fail. I did a fresh reinstall because this issue came with the release of “Qonos”. I really don’t want this to be the reason I have to switch to another OS.
The output of hwinfo --gfx is as follows:
15: PCI 100.0: 0300 VGA compatible controller (VGA)
[Created at pci.386]
Unique ID: VCu0.vcvXg5y6ps7
Parent ID: mnDB.L2l2y4m79O6
SysFS ID: /devices/pci0000:00/0000:00:01.1/0000:01:00.0
SysFS BusID: 0000:01:00.0
Hardware Class: graphics card
Model: "nVidia TU116M [GeForce GTX 1660 Ti Mobile]"
Vendor: pci 0x10de "nVidia Corporation"
Device: pci 0x2191 "TU116M [GeForce GTX 1660 Ti Mobile]"
SubVendor: pci 0x17aa "Lenovo"
SubDevice: pci 0x3a46
Revision: 0xa1
Driver: "nvidia"
Driver Modules: "nvidia"
Memory Range: 0xd0000000-0xd0ffffff (rw,non-prefetchable)
Memory Range: 0x1ffc0000000-0x1ffcfffffff (ro,non-prefetchable)
Memory Range: 0x1ffd0000000-0x1ffd1ffffff (ro,non-prefetchable)
I/O Ports: 0x3000-0x307f (rw)
Memory Range: 0xd1080000-0xd10fffff (ro,non-prefetchable,disabled)
IRQ: 98 (192 events)
Module Alias: "pci:v000010DEd00002191sv000017AAsd00003A46bc03sc00i00"
Driver Info #0:
Driver Status: nouveau is not active
Driver Activation Cmd: "modprobe nouveau"
Driver Info #1:
Driver Status: nvidia_drm is active
Driver Activation Cmd: "modprobe nvidia_drm"
Driver Info #2:
Driver Status: nvidia is active
Driver Activation Cmd: "modprobe nvidia"
Config Status: cfg=new, avail=yes, need=no, active=unknown
Attached to: #27 (PCI bridge)
28: PCI 500.0: 0300 VGA compatible controller (VGA)
[Created at pci.386]
Unique ID: Ddhb.a2V5Dhrwnb8
Parent ID: JZZT.e+TNXSUNut3
SysFS ID: /devices/pci0000:00/0000:00:08.1/0000:05:00.0
SysFS BusID: 0000:05:00.0
Hardware Class: graphics card
Model: "ATI Renoir"
Vendor: pci 0x1002 "ATI Technologies Inc"
Device: pci 0x1636 "Renoir"
SubVendor: pci 0x17aa "Lenovo"
SubDevice: pci 0x3a46
Revision: 0xc6
Driver: "amdgpu"
Driver Modules: "amdgpu"
Memory Range: 0x1ffe0000000-0x1ffefffffff (ro,non-prefetchable)
Memory Range: 0x1fff0000000-0x1fff01fffff (ro,non-prefetchable)
I/O Ports: 0x1000-0x10ff (rw)
Memory Range: 0xd1500000-0xd157ffff (rw,non-prefetchable)
IRQ: 65 (no events)
Module Alias: "pci:v00001002d00001636sv000017AAsd00003A46bc03sc00i00"
Driver Info #0:
Driver Status: amdgpu is active
Driver Activation Cmd: "modprobe amdgpu"
Config Status: cfg=new, avail=yes, need=no, active=unknown
Attached to: #21 (PCI bridge)
Primary display adapter: #15
And the output of mhwd -li is as follows:
> Installed PCI configs:
--------------------------------------------------------------------------------
NAME VERSION FREEDRIVER TYPE
--------------------------------------------------------------------------------
video-linux 2018.05.04 true PCI
video-hybrid-amd-nvidia-prime 2021.12.18 false PCI
Warning: No installed USB configs!
I have installed the acpilight package and added myself to the video group.
I also ran xbacklight -10 and nothing happened.
