Hello there!
I just moved from Zorin to Manjaro and I noticed that any of FN keys and neither the backlighting keys did not work. Even if you open the battery tray it doesn’t appear the backlighting level slider like in other distro with Plasma KDE.
I tried changing the keyboard model to Asus model and this adding this line i915.enable_dpcd_backlight=0 to grub but neither of that options worked for me.
My outputs:
System:
Kernel: 5.10.49-1-MANJARO x86_64 bits: 64 compiler: gcc v: 11.1.0
parameters: BOOT_IMAGE=/boot/vmlinuz-5.10-x86_64
root=UUID=d440db26-6ace-433d-850b-f428c9265dd3 rw quiet udev.log_priority=3
Desktop: KDE Plasma 5.22.3 tk: Qt 5.15.2 wm: kwin_x11 vt: 1 dm: SDDM
Distro: Manjaro Linux base: Arch Linux
Machine:
Type: Laptop System: ASUSTeK product: ROG Strix G531GT_G531GT v: 1.0
serial: <filter>
Mobo: ASUSTeK model: G531GT v: 1.0 serial: <filter>
UEFI: American Megatrends v: G531GT.307 date: 04/28/2020
Battery:
ID-1: BAT0 charge: 43.0 Wh (100.0%) condition: 43.0/50.5 Wh (85.1%)
volts: 12.5 min: 12.5 model: ASUSTeK ASUS Battery type: Li-ion serial: N/A
status: Not charging
CPU:
Info: Quad Core model: Intel Core i5-9300H bits: 64 type: MT MCP
arch: Kaby Lake note: check family: 6 model-id: 9E (158) stepping: A (10)
microcode: EA cache: L2: 8 MiB
flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
bogomips: 38408
Speed: 800 MHz min/max: 800/4100 MHz Core speeds (MHz): 1: 800 2: 800 3: 800
4: 800 5: 800 6: 800 7: 801 8: 800
Vulnerabilities: Type: itlb_multihit status: KVM: VMX disabled
Type: l1tf
mitigation: PTE Inversion; VMX: conditional cache flushes, SMT vulnerable
Type: mds mitigation: Clear CPU buffers; SMT vulnerable
Type: meltdown mitigation: PTI
Type: spec_store_bypass
mitigation: Speculative Store Bypass disabled via prctl and seccomp
Type: spectre_v1
mitigation: usercopy/swapgs barriers and __user pointer sanitization
Type: spectre_v2 mitigation: Full generic retpoline, IBPB: conditional,
IBRS_FW, STIBP: conditional, RSB filling
Type: srbds mitigation: Microcode
Type: tsx_async_abort status: Not affected
Graphics:
Device-1: Intel CoffeeLake-H GT2 [UHD Graphics 630] vendor: ASUSTeK
driver: i915 v: kernel bus-ID: 00:02.0 chip-ID: 8086:3e9b class-ID: 0300
Device-2: NVIDIA TU117M [GeForce GTX 1650 Mobile / Max-Q] vendor: ASUSTeK
driver: nvidia v: 470.42.01 alternate: nouveau,nvidia_drm bus-ID: 01:00.0
chip-ID: 10de:1f91 class-ID: 0300
Display: x11 server: X.Org 1.20.11 compositor: kwin_x11 driver:
loaded: modesetting,nvidia alternate: fbdev,intel,nouveau,nv,vesa
display-ID: :0 screens: 1
Screen-1: 0 s-res: 1920x1080 s-dpi: 96 s-size: 508x285mm (20.0x11.2")
s-diag: 582mm (22.9")
OpenGL: renderer: Mesa Intel UHD Graphics 630 (CFL GT2) v: 4.6 Mesa 21.1.4
direct render: Yes
Audio:
Device-1: Intel Cannon Lake PCH cAVS vendor: ASUSTeK driver: snd_hda_intel
v: kernel alternate: snd_soc_skl,snd_sof_pci bus-ID: 00:1f.3
chip-ID: 8086:a348 class-ID: 0403
Sound Server-1: ALSA v: k5.10.49-1-MANJARO running: yes
Sound Server-2: JACK v: 0.125.0 running: no
Sound Server-3: PulseAudio v: 14.2 running: yes
Sound Server-4: PipeWire v: 0.3.31 running: no
Bluetooth:
Device-1: Intel Bluetooth 9460/9560 Jefferson Peak (JfP) type: USB
driver: btusb v: 0.8 bus-ID: 1-14:4 chip-ID: 8087:0aaa class-ID: e001
Report: rfkill ID: hci0 rfk-id: 1 state: down bt-service: enabled,running
rfk-block: hardware: no software: yes address: see --recommends
Drives:
Local Storage: total: 1.13 TiB used: 8.36 GiB (0.7%)
SMART Message: Unable to run smartctl. Root privileges required.
ID-1: /dev/sda maj-min: 8:0 vendor: Seagate model: ST1000LX015-1U7172
size: 931.51 GiB block-size: physical: 4096 B logical: 512 B speed: 6.0 Gb/s
rotation: 5400 rpm serial: <filter> rev: SDM1 scheme: GPT
ID-2: /dev/sdb maj-min: 8:16 vendor: Western Digital
model: WDS240G2G0B-00EPW0 size: 223.58 GiB block-size: physical: 512 B
logical: 512 B speed: 6.0 Gb/s rotation: SSD serial: <filter> rev: 0000
scheme: GPT
Partition:
ID-1: / raw-size: 294.09 GiB size: 288.42 GiB (98.07%) used: 8.33 GiB (2.9%)
fs: ext4 dev: /dev/sda2 maj-min: 8:2
ID-2: /boot/efi raw-size: 100 MiB size: 96 MiB (96.00%)
used: 24.7 MiB (25.8%) fs: vfat dev: /dev/sdb2 maj-min: 8:18
Swap:
Alert: No swap data was found.
Sensors:
System Temperatures: cpu: 47.0 C mobo: N/A
Fan Speeds (RPM): cpu: 3200
Info:
Processes: 227 Uptime: 3m wakeups: 1 Memory: 15.49 GiB
used: 1.81 GiB (11.7%) Init: systemd v: 248 tool: systemctl Compilers:
gcc: N/A Packages: pacman: 1022 lib: 283 Shell: Bash v: 5.1.8
running-in: konsole inxi: 3.3.05
ls -l /sys/class/leds/
total 0
lrwxrwxrwx 1 root root 0 jul 19 17:51 asus-wireless::airplane -> ../../devices/LNXSYSTM:00/LNXSYBUS:00/ATK4002:00/leds/asus-wireless::airplane
lrwxrwxrwx 1 root root 0 jul 19 17:51 input25::capslock -> ../../devices/pci0000:00/0000:00:14.0/usb1/1-8/1-8:1.0/0003:0B05:1866.0005/input/input25/input25::capslock
lrwxrwxrwx 1 root root 0 jul 19 17:51 input25::compose -> ../../devices/pci0000:00/0000:00:14.0/usb1/1-8/1-8:1.0/0003:0B05:1866.0005/input/input25/input25::compose
lrwxrwxrwx 1 root root 0 jul 19 17:51 input25::kana -> ../../devices/pci0000:00/0000:00:14.0/usb1/1-8/1-8:1.0/0003:0B05:1866.0005/input/input25/input25::kana
lrwxrwxrwx 1 root root 0 jul 19 17:51 input25::numlock -> ../../devices/pci0000:00/0000:00:14.0/usb1/1-8/1-8:1.0/0003:0B05:1866.0005/input/input25/input25::numlock
lrwxrwxrwx 1 root root 0 jul 19 17:51 input25::scrolllock -> ../../devices/pci0000:00/0000:00:14.0/usb1/1-8/1-8:1.0/0003:0B05:1866.0005/input/input25/input25::scrolllock
lrwxrwxrwx 1 root root 0 jul 19 17:51 input26::capslock -> ../../devices/pci0000:00/0000:00:14.0/usb1/1-8/1-8:1.1/0003:0B05:1866.0006/input/input26/input26::capslock
lrwxrwxrwx 1 root root 0 jul 19 17:51 input26::compose -> ../../devices/pci0000:00/0000:00:14.0/usb1/1-8/1-8:1.1/0003:0B05:1866.0006/input/input26/input26::compose
lrwxrwxrwx 1 root root 0 jul 19 17:51 input26::kana -> ../../devices/pci0000:00/0000:00:14.0/usb1/1-8/1-8:1.1/0003:0B05:1866.0006/input/input26/input26::kana
lrwxrwxrwx 1 root root 0 jul 19 17:51 input26::numlock -> ../../devices/pci0000:00/0000:00:14.0/usb1/1-8/1-8:1.1/0003:0B05:1866.0006/input/input26/input26::numlock
lrwxrwxrwx 1 root root 0 jul 19 17:51 input26::scrolllock -> ../../devices/pci0000:00/0000:00:14.0/usb1/1-8/1-8:1.1/0003:0B05:1866.0006/input/input26/input26::scrolllock
lrwxrwxrwx 1 root root 0 jul 19 17:51 input36::capslock -> ../../devices/pci0000:00/0000:00:14.0/usb1/1-5/1-5:1.2/0003:046D:C539.0004/0003:046D:406C.0008/input/input36/input36::capslock
lrwxrwxrwx 1 root root 0 jul 19 17:51 input36::compose -> ../../devices/pci0000:00/0000:00:14.0/usb1/1-5/1-5:1.2/0003:046D:C539.0004/0003:046D:406C.0008/input/input36/input36::compose
lrwxrwxrwx 1 root root 0 jul 19 17:51 input36::kana -> ../../devices/pci0000:00/0000:00:14.0/usb1/1-5/1-5:1.2/0003:046D:C539.0004/0003:046D:406C.0008/input/input36/input36::kana
lrwxrwxrwx 1 root root 0 jul 19 17:51 input36::numlock -> ../../devices/pci0000:00/0000:00:14.0/usb1/1-5/1-5:1.2/0003:046D:C539.0004/0003:046D:406C.0008/input/input36/input36::numlock
lrwxrwxrwx 1 root root 0 jul 19 17:51 input36::scrolllock -> ../../devices/pci0000:00/0000:00:14.0/usb1/1-5/1-5:1.2/0003:046D:C539.0004/0003:046D:406C.0008/input/input36/input36::scrolllock
lrwxrwxrwx 1 root root 0 jul 19 17:43 input4::capslock -> ../../devices/platform/i8042/serio0/input/input4/input4::capslock
lrwxrwxrwx 1 root root 0 jul 19 17:43 input4::numlock -> ../../devices/platform/i8042/serio0/input/input4/input4::numlock
lrwxrwxrwx 1 root root 0 jul 19 17:43 input4::scrolllock -> ../../devices/platform/i8042/serio0/input/input4/input4::scrolllock
lrwxrwxrwx 1 root root 0 jul 19 17:51 phy0-led -> ../../devices/pci0000:00/0000:00:14.3/leds/phy0-led
PD: My laptop model is Asus Rog Strix G531T.