Installing Ubuntu on XPS 9500
I have done with my XPS 9500. All working goods, only some issue about battery life.
Some hints
prerequisite
Disable secure boot and Intel Rapid Storage Technology before installation
gnome tweaks
It allows you some extra conf like touchpad gestures
sudo apt install gnome-tweaks
fingerprint reader
sudo sh -c 'cat > /etc/apt/sources.list.d/focal-dell.list << EOF
deb http://dell.archive.canonical.com/updates/ focal-dell public
# deb-src http://dell.archive.canonical.com/updates/ focal-dell public
deb http://dell.archive.canonical.com/updates/ focal-oem public
# deb-src http://dell.archive.canonical.com/updates/ focal-oem public
deb http://dell.archive.canonical.com/updates/ focal-somerville public
# deb-src http://dell.archive.canonical.com/updates/ focal-somerville public
deb http://dell.archive.canonical.com/updates/ focal-somerville-melisa public
# deb-src http://dell.archive.canonical.com/updates focal-somerville-melisa public
EOF'
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys F9FDA6BED73CDC22
sudo apt update -qq
sudo apt install oem-somerville-melisa-meta libfprint-2-tod1-goodix oem-somerville-meta tlp-config -y
sudo add-apt-repository ppa:boltgolt/howdy -y
sudo apt update -qq
sudo apt install howdy -y