Fn shortcuts for increase and decrease screen brightness don't work in gnome

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6

This solution helped me
edit /etc/default/grub and include “acpi_backlight=native” at the end of your GRUB_CMDLINE_LINUX_DEFAULT stanza:

GRUB_CMDLINE_LINUX_DEFAULT="acpi_backlight=native"

Save your config and run “sudo grub2-mkconfig”. Reboot.

font: Lost screen backlight controls after upgrade to F37 - #3 by bouquetbouquet

Thanks, everyone