Comment 17 for bug 226981

Two additions to my previous comment:

The original bug involved the nvidia nVidia 8400M GS chip, I am experiencing the bug on a Dell XPS 1330 with intel x3100 integrated card.

The blacklisting of the video module, which now is not working anymore as a temporary fix, was never an optimal solution because gnome-power-manager in ubuntu 8.04 was setting the the brightness levels when switching from ac to battery and vice versa often incorrectly.

In essence, brightness management on xps m1330 has been broken since ubuntu 7.10. If I can give more useful and specific output, just let me know. I am not and experienced bug reporter.