Comment 74 for bug 311716

2.6.27-11.23 had working brightness controls for me on my Lenovo R61 with Intel graphics.

2.6.27-11.24 does not sadly. The controls don't function at all.

2.6.27-11.22 did not work either. Again the controls did not function at all.

as far as I can remember kernel 2.6.27-11.21 and kernels prior to that were fine.