I executed the commands that you provided to add acpi_backlight=native to the kernel command line and updated GRUB accordingly.
Results: Kernel 6.17.0-35: No change. The issue remains. Brightness control is still non-functional. The mouse pointer still exhibits rendering artifacts/trailing. Kernel 6.17.0-22: Still works correctly with the same change applied. Brightness control works normally. No pointer artifacts observed. Please let me know if you would like me to collect any additional logs or perform further testing. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2155617 Title: Backlight device disappears and brightness breaks on kernel 6.17.0-23+ (Lenovo Legion 5 Pro, NVIDIA hybrid graphics) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2155617/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
