Ubuntu 20.04 will install fine on the XPS15 9560. However you will need to set nouveau.modeset=0 and disconnect any monitor connected to HDMI.
Also after 20.04 is installed, you still cannot boot when a monitor is connected to HDMI. You will stay at the Ubuntu splash screen with the spinner spinning. You can only successfully boot when the HDMI cable is disconnected, -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1874624 Title: Unable to boot 20.04 LTS installer on Dell XPS 15 9560 Status in linux package in Ubuntu: Confirmed Bug description: I try to install the stable released Ubuntu 20.04 LTS (20.04 LTS) on Dell XPS 15 9560 using USB stick. The system power off at 6% of Check Disk. Also if I jump the check Disk system power off. The same USB disk work on a older Dell Latitude. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1874624/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp