I just discovered something really odd, by accident: tapping the middle "touch" button on the right of the laptop, the thing that looks like three lines with blobs on the end meeting at a point, dims the backlight as I want -- I can increase the brightness with Fn-F5. It's an odd key combination but it allows me to control the brightness. Hope that helps troubleshoot and as a workaround for others.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/568611 Title: Screen brightness control fails on Dell Studio 1558 To manage notifications about this bug go to: https://bugs.launchpad.net/null/+bug/568611/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs