Dell XPS 15 9560, BIOS is up-to-date (Feb 18). I'm trying ton install Ubuntu 16.04/17.10/18.04beta from USB thumb drive (SanDisk USB 3.0), but when the installation starts it gives errors:

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ACPI Error Namespace llopup failure, AE_NOT_FOUND

Cannot enable. Maybe the USB cable is bad? cannot disable (err = -32)

I tried different USB as well as different USB ports, and also tried Ubuntu 17.10 as well but no luck.

I could proceed to “Installation Type” (but there is no partition) after acpi=off as kernel param but then it crashes when I try to select “+” or “Change”, so it seems like it does not help. But the partition is empty, so something is wrong.

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After a struggle, it seems like I needed to change Raid on to AHCI for SATA setting, but after the change I still cannot reach the installation screen or it just freezes as error occurs unable to find a medium containing a live file system as shown below:

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Ref: http://www.dell.com/support/article/ca/en/cabsdt1/sln299303/loading-ubuntu-on-systems-using-pcie-m2-drives?lang=en


A combination of these things might work for you:

  • Change the boot mode to AHCI
  • hit X at the GRUB bootloader screen and change live splash to nomodeset
  • If it's a USB 3.0 USB make sure you use a USB 3.0 port
  • If the USB 3.0 USB isn't working - try a USB 2.0 port
  • If that still doesn't work - try a USB 2.0 key in a USB 2.0 port
  • If you have no USB 2.0 ports try going into the BIOS and disabling USB 3.0 at the BIOS level
  • If you can't disable USB 3.0 in BIOS then congratulations you're just as stuck as I am now
  • Changing live splash to nomodeset did the trick for me - thanks! – eli Jun 22 '18 at 19:20

I tried with Ubuntu 18.04 LTS and finally worked! with kernel params added nouveau.modeset=0 acpi=off after quiet splash.

After installation is done, I needed to start recovery mode and do this. dpkg-reconfigure lightdm

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