I think it is a problem with the BIOS. We have to contact Dell to get a new BIOS update. The BIOS Version A02 do not run correctly with the ACPI interface.
-- Brightness adjustment goes crazy on Dell Inspiron 1370 https://bugs.launchpad.net/bugs/489397 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs