I can also confirm this issue. Reverting to 6.17.0-40-generic fixed my issue as well.
System: Kernel: 7.0.0-28-generic arch: x86_64 Desktop: Cinnamon v: 6.6.7 Distro: Linux Mint 22.3 Zena base: Ubuntu 24.04 noble -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2161148 Title: [SRU] intel_backlight (i915/eDP AUX-DPCD) stops responding to live brightness writes in 7.0.0-28-generic (works in 6.17.0-40-generic) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2161148/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
