I have the exact same laptop, and "It's a feature, not a bug." :P
Check your BIOS in the section about brightness; there is a section to automatically change the brightness based on ambient light. ** Changed in: ubuntu Status: New => Invalid -- LCD brightness goes up and down automatically https://bugs.launchpad.net/bugs/193013 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