Ubuntu – ACPI PPC Probe failed. Starting version 219 NVIDIA


I've recently updated to Ubuntu 15.04 and after installing the latest nvidia drivers (346.59) which worked on ubuntu 14.10 seems to have caused some trouble on boot.

All I get is the following when booting:

  • A purple screen for about a second and then

    [0.514409] ACPI PPC Probe failed. Starting version 219
  • A black screen with a message of my monitor saying : No Signal detected.

I am using a GTX 970.

Best Answer

I had the same problem. For me, two solutions worked:

  1. Use the X.Org Nouveau display driver (by purging the Nvidia binary drivers as described in other answers). The drawback is that it will impact the graphics performance which is better with an official Nvidia driver.

  2. Install the Nvidia driver and boot with the 'nomodeset' flag. To do this, configure Grub as described in the answer to this question

This will show a really ugly splash screen during booting, but once you passed it you reach sddm and have a nice graphics performance.