I have an AMD E-300 APU with Radeon(tm) HD Graphics, and I'm facing this same issue on the latest Lubuntu 20.04
I've noted that `xbacklight` displays `No outputs have backlight property`. It seems that `lxqt-config-brightness` works the same way as `xbacklight`, or uses it internally. However, `lxqt-backlight_backend` does work as intended after running `sudo chmod 0646 /sys/class/backlight/radeon_bl0/brightness` -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1829641 Title: brightness keys on laptop don't dim the backlight To manage notifications about this bug go to: https://bugs.launchpad.net/lxqt/+bug/1829641/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
