Thinkpad x1 yoga 2nd Intel-GPU Brightness Issue

Hello team,

ty much 4 great manjaro. I 've postet my issue on April before, without any reply. So hopefully I can get any help from U guys, would be really nice!

Unfortunately I have fn+hotkey+brightness issues like its working but it does not change anything by increasing/decreasing brightness. I am still on a fix level, manipulating level-bar on topright fails as well.

Thinks, I have done:

create 20-intel.conf:

sudo nano /etc/X11/xorg.conf.d/20-intel.conf
  GNU nano 4.9.2       /etc/X11/xorg.conf.d/20-intel.conf                  
Section "Device"
        Identifier  "card0"
        Driver      "intel"
        Option      "Backlight"  "intel_backlight"
        BusID       "PCI:0:2:0"

EndSection

Keyboard-Backlight--> working,
Display-Brightness--> not working

System:
  CPU: Dual Core Intel Core i7-7600U (-MT MCP-) speed/min/max: 797/400/3900 MHz Kernel: 5.7.9-1-MANJARO x86_64 Up: 1h 38m 
Mem: 3581.3/15758.6 MiB (22.7%) Storage: 953.87 GiB (58.7% used) Procs: 234 Shell: bash 5.0.18 inxi: 3.0.37 
[ascii@ascii-20jes03t00 ~]$ inxi -b
System:    Host: ascii-20jes03t00 Kernel: 5.7.9-1-MANJARO x86_64 bits: 64 Desktop: KDE Plasma 5.19.3 Distro: Manjaro Linux 
Machine:   Type: Convertible System: LENOVO product: 20JES03T00 v: ThinkPad X1 Yoga 2nd serial: <root required> 
           Mobo: LENOVO model: 20JES03T00 v: SDK0K17763 WIN serial: <root required> UEFI: LENOVO v: N1NET51W (1.38 ) 
           date: 06/10/2020 
Battery:   ID-1: BAT0 charge: 30.1 Wh condition: 47.6/56.0 Wh (85%) 
CPU:       Dual Core: Intel Core i7-7600U type: MT MCP speed: 800 MHz min/max: 400/3900 MHz 
Graphics:  Device-1: Intel HD Graphics 620 driver: i915 v: kernel 
           Display: x11 server: X.Org 1.20.8 driver: intel resolution: 2560x1440~60Hz 
           OpenGL: renderer: Mesa Intel HD Graphics 620 (KBL GT2) v: 4.6 Mesa 20.1.3 
Network:   Device-1: Intel Ethernet I219-LM driver: e1000e 
           Device-2: Intel Wireless 8265 / 8275 driver: iwlwifi 
Drives:    Local Storage: total: 953.87 GiB used: 559.99 GiB (58.7%) 
Info:      Processes: 234 Uptime: 1h 38m Memory: 15.39 GiB used: 3.50 GiB (22.7%) Shell: bash inxi: 3.0.37 

Cu, tw4in

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