This bug affects me too on Lenovo ThinkPad T480. The brightnes control panel appears, but it has no effect.
Additionally, when I suspend the laptop, then when I continue the screen becomes very dim, it's very hard to see anything, and I can't bring its brightness without restarting the laptop. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2161359 Title: linux-modules-7.0.0-28-generic breaks backlight control on some laptops To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2161359/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
