Lenovo is quite a different working site. You can try "acpi_backlight=vendor" on the grub command line, plus
options thinkpad_acpi brightness_enable=1
somewhere in /etc/modprobe.d
Though if that does not help, please open another bug as the solution needs a different approach than for the Acers. Thanks.
@Marc-André, thanks for the dmidecode. I hope I get time soon to work on this.
Lenovo is quite a different working site. You can try "acpi_backlight =vendor" on the grub command line, plus
options thinkpad_acpi brightness_enable=1
somewhere in /etc/modprobe.d
Though if that does not help, please open another bug as the solution needs a different approach than for the Acers. Thanks.
@Marc-André, thanks for the dmidecode. I hope I get time soon to work on this.