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can't adjust screen brightness, xrandr doesn't work too

I can't adjust the brightness of the monitor xrandr shows no error but brightness didn't change too. And of course adjusting from keyboard or gnome panel doesn't work too either. Here is output of journalctl -xe https://pastebin.com/f1ibDKVM

can't adjust screen brightness, xrandr doesn't work too

I can't adjust the brightness of the monitor xrandr shows no error but brightness didn't change too. And of course adjusting from keyboard or gnome panel doesn't work too either. Here is output of journalctl -xe https://pastebin.com/f1ibDKVMhttps://pastebin.com/f1ibDKVM and inxi inxi -SMGxxxz System: Host: localhost.localdomain Kernel: 4.18.16-300.fc29.x86_64 x86_64 bits: 64 compiler: gcc v: 8.2.1 Desktop: Gnome 3.30.1 info: docker wm: gnome-shell dm: GDM 3.30.1 Distro: Fedora release 29 (Twenty Nine) Machine: Type: Laptop System: HP product: HP EliteBook 850 G5 v: N/A serial: <filter> Chassis: type: 10 serial: <filter> Mobo: HP model: 83B2 v: KBC Version 04.50.00 serial: <filter> UEFI: HP v: Q78 Ver. 01.01.08 date: 06/05/2018 Graphics: Device-1: Intel UHD Graphics 620 vendor: Hewlett-Packard driver: i915 v: kernel bus ID: 00:02.0 chip ID: 8086:5917 Display: x11 server: Fedora Project X.org 1.20.3 driver: intel compositor: gnome-shell resolution: 1920x1080~60Hz OpenGL: renderer: Mesa DRI Intel UHD Graphics 620 (Kabylake GT2) v: 4.5 Mesa 18.2.4 compat-v: 3.0 direct render: Yes

can't adjust screen brightness, xrandr doesn't work too

I can't adjust the brightness of the monitor xrandr shows no error but brightness didn't change too. And of course adjusting from keyboard or gnome panel doesn't work too either. Here is output of journalctl -xe https://pastebin.com/f1ibDKVM and inxi inxi

inxi -SMGxxxz
System:    Host: localhost.localdomain Kernel: 4.18.16-300.fc29.x86_64 x86_64 bits: 64 compiler: gcc v: 8.2.1 
           Desktop: Gnome 3.30.1 info: docker wm: gnome-shell dm: GDM 3.30.1 
           Distro: Fedora release 29 (Twenty Nine) 
Machine:   Type: Laptop System: HP product: HP EliteBook 850 G5 v: N/A serial: <filter> Chassis: type: 10 
           serial: <filter> 
           Mobo: HP model: 83B2 v: KBC Version 04.50.00 serial: <filter> UEFI: HP v: Q78 Ver. 01.01.08 
           date: 06/05/2018 
Graphics:  Device-1: Intel UHD Graphics 620 vendor: Hewlett-Packard driver: i915 v: kernel bus ID: 00:02.0 
           chip ID: 8086:5917 
           Display: x11 server: Fedora Project X.org 1.20.3 driver: intel compositor: gnome-shell 
           resolution: 1920x1080~60Hz 
           OpenGL: renderer: Mesa DRI Intel UHD Graphics 620 (Kabylake GT2) v: 4.5 Mesa 18.2.4 compat-v: 3.0 
           direct render: Yes 
Yes