I did receive this "ACPI PCC probe failed; starting version 219" error as soon as I received the latest version of Ubuntu (15.04) with the generic kernel 3.19. ???. As soon as I rebooted my laptop the screen went blank (or a black screen) and the laptop just "hung" and would not proceed further. The only option for me was to power off and then power on. Upon booting, Ubuntu went to the " "advanced ubuntu options" in GRUB " and by selecting the prior available kernel 3.18. ??, my laptop booted successfully and was quite usable as before.
As from April 23, 2015 until this morning, May 20, 2015, I had to use the ... power on, power off, power on, select the kernel 3.18. ?? to use my laptop ... . On the morning of May 20, 2015, Ubuntu made availble the latest Kernel 3.19.0.18 to download and now my laptop boots up properly as before with no errors.
As is the same with Microsoft Windows, the developers at Ubuntu must always update their operating systems and sometimes minor things do get missed.
My laptop is a Dell Inspiron B120 with a "Intel® Celeron(R) M processor 1.40GHz", "Intel® 915GM x86/MMX/SSE2" graphics card, 32 bit processor, and 2 Gigabyte RAM. It is a solid laptop but struggles with Windows as Windows can be quite hefty on older laptops which is why I chose Ubuntu as it is really quite a light operating system that offers similar functionality as Windows.
I appreciate Ubuntu very much and hopefully, future upgrades will explain a little more clearly some missed errors whether critical or not.
Anyway, I understand the tribulations for the operating systems programmers and the effort required to update operating systems to keep them secure.
I wish them well.
Solved by disabling fast startup on Windows 10 (dual installation).
To achieve that in Windows open the Control Panel, go to All Control Panel Items > Power Options > System Settings > Change settings that are currently unavailable (UAC) and uncheck Fast Startup (recommended).
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I had the same problem after installing Ubuntu 16.04 on the Lenovo w540 with preinstalled Win 8.1. It appeared that I didn't install Ubuntu with correct bootloader. The Windows was booting in UEFI mode while the Ubuntu in BIOS mode.So I've reinstalled Ubuntu, but this time I read:
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The problem with the PCC parsing... didn't appear since then.
I don't know if it's relevant but I've installed Ubuntu on a separate drive with separate efi partition.In my BIOS settings I have now another entry on the boot order list: 'ubuntu'. It was placed by the Ubuntu installer on the first place so I moved it below the USB stuff but above the Windows Boot Manager so I can boot from USB key or choose from the GRUB2 boot menu which system to boot on each restart.