How to invert fn keys on Dell Laptop?
I am not sure if it works for all models, but on mine if you press Fn+Esc it changes the Fn lock so that F1+F12 work as normal and when you hold Fn+(lets say F11) it will change the brightness or whatever that keys secondary function is. Pressing Fn+Esc again reverts it back to default. Hope this helps.
It should be possible to do it in the BIOS. Quoting the XPS 15z manual:
Press F2 during POST (Power On Self Test) to enter the System Setup (BIOS) utility.
In the Function Key Behavior, select Multimedia Key First or Function Key First.
- Function Key First — This is the default option. Press any function key to perform the associated function. For multimedia action, press Fn + the required multimedia key.
- Multimedia Key First — Press any multimedia key to perform the associated multimedia action. For function, press Fn + the required function key.