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Some functional keys fn+F2, fn+F3 (brightness down/up) and fn+F12(airplane mode) don't behave as they should. Pressing these combination is not recognizable in acpi_listen nor via evtest: doesn't produce any output. All other functional keys like fn+F8 (volume up) for example work fine. How to make the keys 'visible'? I've tried different arguments as pcie-aspm-force acpi_osi= backlight=vendor in grub to mention a few but with no success. My laptop is HP Pavilion Gaming 15

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