I think I have the same or very similar problem. When using the netbook from battery, and it tries to switch back to energy saving mode the screen brightness rapidly changes between thje original and energy saving levels. during 10-15s. In this period, it is not possible to use the mouse or keyboard, except for swtiching to terminal. The terminal reported "ACPI: failed to switch brightness" Which files do you need to address this?
Using natty on a Samsung N150 -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-power-manager in Ubuntu. https://bugs.launchpad.net/bugs/768809 Title: screen brightness blinking on MSI VR420 notebook -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs