HP Envy Zorin Pro brightness issue

[Forpli]

You could try it with the
acpi_backlight=native kernel parameter:

No brightness display

Did you try this solution mentioned here? "Adding just acpi_backlight=native worked for me. grub line becomes: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=native" Ubuntu 24.04 Acer Nitro 5 AN515-47 Following steps from Pratham: sudo nano /etc/default/grub Replace GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" With GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=native" press ctrl+o, then enter to confirm, then ctrl+x to quit nano sudo update-grub reboot your system " (…