Comment 28 for bug 872652

I also confirm that Alex Davis's kernel patch https://lkml.org/lkml/2011/10/2/185 fixes the problem (and in a better way than my gnome-settings-daemon patch). [Dell Studio 1558]

I have published an installable Ubuntu Oneiric kernel PPA with that patched applied (the build is pending, and won't likely be available until some time tomorrow):

    https://launchpad.net/~kamalmostafa/+archive/stuck-backlight

Feedback to this bug report will be appreciated.

The gnome-settings-ppa noted in comment #15 is no longer recommended.