Confirmed on my Thinkpad T42 and T40 Echoing 'up' 'down' or level commands into /proc/acpi/ibm/brightness results in it immediately being reset to level 0
Not sure if this is gnome-power-manager that has the problem or something lower-level. Testing it without gnome-power-manager running sees the keys working. This all worked 100% fine in <= Edgy -- [Feisty] Thinkpad R51 LCD brightness control cycles between lowest settings only https://launchpad.net/bugs/81407 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
