I am a first time Linux user. I just bought a new System76 Lemur Pro laptop and I didn't like the pop!_OS they had as default, so I watched a few youtube videos about which Linux OS I should get and the one that I liked the most was Zorin OS.
So the other day I installed it no problem. Felt like a true hacker. And now that I've spent some time setting everything up to be basically 100% exactly how I want it, I notice that the bloody screen brightness cannot be adjusted!
Using the [Fn]F8/F9 commands don't work. There is no brightness slider tool in the panel at the bottom. There is no keyboard shortcut option in the device settings.
I have absolutely no idea what to do. I've read several other people posting about the same issue and I've tried a few things that were given to them as solutions and I still have had no success.
Linux is so overwhelming and it literally took me a few days to find the OS I like, and now to find that I can't change the screen brightness is just painful. Here is the configuration of my laptop as it came in the mail recently:
- 14.1" Matte 1080p FHD Display
- Intel® Iris® Xe Graphics
- 4.2 GHz i5-1135G7 (8MB Cache – 4 Cores – 8 Threads)
- 16 GB Dual Channel DDR4 at 3200 MHz (2 x 8GB)
- 500 GB PCIe Gen3 Seq Read: 2400 MB/s, Seq Write: 1750 MB/s
I honestly don't even know if that information would be relevant but I just want to be able to adjust the screen brightness already I've been at this for more than 2 days and I just want to use my new laptop already 
P.S. I have sensitive eyes and I usually always use a few different bluelight blocking filters + glasses + screen stickers on as well as a low screen brightness so this is honestly a huge deal for me not to be able to control this one little thing.
Please help 