I confirm that brightness is broken in Dell OptiPlex 7780, Kernel 6.11.0-9-generic, and Ubuntu 24.10. The workaround proposed in #13 does not work for me.
This is still the same issue as in https://answers.launchpad.net/ubuntu/+source/linux/+question/708338. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2049248 Title: Kernel 6.5 breaks display brightness controls and sets it to 100% all the time To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe-6.5/+bug/2049248/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
