I have the same problem on my Dell Inspiron 6400. From the gpm --verbose output I can see that the brightness gets reset when gpm considers the system idle (see attached log).
** Attachment added: "Output of gpm --verbose" http://launchpadlibrarian.net/11217621/gpmlog.txt -- Brightness is automatically readjusted to match Brightness Applet https://bugs.launchpad.net/bugs/155485 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs