Comment 18 for bug 574250

I just took a look at the current lucid udev version in that PPA, and indeed it adds a few extra models. I just fixed that once and for all upstream now:

  http://git.kernel.org/?p=linux/hotplug/udev.git;a=commit;h=60d19551d8b532338a6f309f9186a5163121c9fe

However, this bug report is about the N150, which is already covered in lucid-updates and maverick, so I won't reopen this.

Note that this merely handles the keymaps. I suppose the samsung-backlight package adds some extra magic to actually change the brightness on Samsung notebooks, i. e. implement the "brightness up" key event action.