PSA: For those of you that, like me, have a newer Lenovo laptop and the touchpad and brightness controls weren't working, they have been fixed on Kernel 5.11, guide below.

I'm posting this because I am not a technical user and it's taken me a long time to figure out how to update the kernel (sad I know). So for others like me I wanted to post this, hope that's ok.

For any noobs like me that are on Ubuntu this is the guide that I followed to upgrade to kernel 5.11 and everything works perfectly for me, both the touchpad and the brightness controls. (I have a new Lenovo Legion and until recently the touchpad and brightness controls weren't working)

Upgrade kernel by going to the terminal and copying and pasting these instructions:

Change current directory to /tmp cd /tmp Download the latest mainline kernel from 5.11.x branch by copying and pasting this: wget -c https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.11-rc2/amd64/linux-headers-5.11.0-051100rc2_5.11.0-051100rc2.202101032030_all.deb wget -c https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.11-rc2/amd64/linux-headers-5.11.0-051100rc2-generic_5.11.0-051100rc2.202101032030_amd64.deb wget -c https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.11-rc2/amd64/linux-image-unsigned-5.11.0-051100rc2-generic_5.11.0-051100rc2.202101032030_amd64.deb wget -c https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.11-rc2/amd64/linux-modules-5.11.0-051100rc2-generic_5.11.0-051100rc2.202101032030_amd64.deb 

Install new kernel sudo dpkg -i *.deb

Reboot the system sudo shutdown -r now

Update packages list sudo apt-get update Upgrade packages sudo apt-get upgrade Reboot the system if needed sudo shutdown -r now Check the OS distro lsb_release -a Check kernel version uname -r 

That's it, now you should be running on the Linux Kernel 5.11rc2

Guide taken from this wonderful page: https://sypalo.com/how-to-upgrade-ubuntu

Thanks to everyone for their hard work over on the launchpad thread (https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1887190?comments=all) sorry for posting this noob guide here but it took me weeks to figure out an easy way to do it (patching was beyond my abilities). Hope this helps someone!