As (probably) a large number of user on linux right now, I'm using the following workaround to handle this issue:
'echo "4590" > /sys/class/backlight/intel_backlight/brightness' as root another option might be to use the following xrandr command: xrandr --output [yourscreendevice] -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1225811 Title: 1002:6601 [Dell Inspiron 15R 5521] Can't toggle backlight brightness To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1225811/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
