I had similar issue with Lenovo Yoga Slim 7 AMD Ryzen 4700U, in Ubuntu 20.04.1. Solved by upgrade of kernel to latest upstream (5.8). Another solution for me was installation of AMDGPU proprietary drivers.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1872311 Title: Brightness hotkeys not working on Lenovo S740 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1872311/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
