Using 5.15 kernel : There is in /sys/class/backlight a dell_uart_backlight folder with 10 items in it.
Not sure it's really a folder, more a link to an other folder as i see this in Nautilus properties : ../../devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:3a/DELL0501:00/backlight/dell_uart_backlight If i use a 6.X kernel, folder /sys/class/backlight/ is empty. Sorry if it's not clear enough, i can speak english a bit but it's not my native language. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2067498 Title: Can't control display backlight in 24.04 on Dell AIO system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2067498/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
