Please check if you have this folder: /sys/bus/acpi/devices/LNXVIDEO:00/physical_node/backlight. You specified acpi_backlight=video, but maybe it's not available from ACPI Video device. Please try removing acpi_backlight=video from boot parameters.
** Summary changed: - brightness + no brightness control support on Aspire A715-72G -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1867060 Title: no brightness control support on Aspire A715-72G To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1867060/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
