Comment 147 for bug 207473

I'm also having this problem on a Dell Latitude E6410 with Ubuntu 11.04, using the Classic (no effects) desktop.

A new (I think) detail, though:
If I have a menu open in the panel, any menu (applications, places, system, volume, time/date, etc), and try changing the brightness with it open, it only changes by one level. As soon as I leave the menu, it goes back to changing two levels back to back, for one button-press.

lshal -m gives me "The program 'lshal' is currently not installed. You can install it by typing: sudo apt-get install hal"

Is there anything else I should try and post the results?