Agree this is a bug, the problem is exactly the same on my IBM T60 2623-D6U, Ubuntu 12.04. It is possible to have "single step" brightness using 1) kernel parameter acpi_backlight=vendor and 2) thinkpad_acpi module parameter brightness_enable=0. But in this case OSD brighness change notification desappears.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/841315 Title: on thinkpad-acpi devices, brightness setting ommits most steps To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-power-manager/+bug/841315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
