This still happens in a fresh install of 19.10 with discrete-only graphics (Nvidia enabled, Intel disabled in BIOS) and with the nvidia driver.
Backlight control works when booting with the 19.10 live iso which the uses nouveau driver. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1747273 Title: Can not control brightness on Thinkpad P51 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1747273/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
