@Po-Hsu Lin Can you try the kernel parameter mentioned in bug 1354313 #3 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1353307
Title: [Lenovo B470e] Unable to control brightness on 12.04.5 To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1353307/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
