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I have a Lenovo X240 laptop that has dual boot (Windows and Ubuntu), but Ubuntu won't start (Windows works fine).

I get stuck on a black screen with the following followed by a blinking cursor:

[0.142165] Error parsing PCC subspaces from PCCT

Busybox v1.22.1 (Ubuntu 1:1.22.0-15ubuntu1) built-in shell (ash)
Enter'help' for a list of built-in commands.

(initramfs)
Manoj
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user62372
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  • Hi, I think we would need some more information to solve your problem. What graphics card are you using, and which graphics driver do you have installed? What version of Ubuntu are you running? Make sure that you have fastboot and secureboot disabled in the BIOS. – Ziyad Edher Mar 27 '17 at 16:47
  • I believe the graphics card is: "Intel HD Graphics 4400 (Integrated Card)"

    I'm not sure what graphics driver is installed. How can I find that out? Can I find that out?

    I think I was running 16.04 LTS

    How do disable fastboot and secureboot in BIOS?

     – user62372 Mar 27 '17 at 16:56
  • I just found out that secure boot is disabled, but I am not sure about fastboot. – user62372 Mar 27 '17 at 17:01
  • FYI, this is the computer I am having the problem with: https://www.newegg.com/Product/Product.aspx?Item=9SIA7RB4W47045&Tpk=9SIA7RB4W47045 – user62372 Mar 27 '17 at 17:06
  • fastboot is sometimes called fast startup in some BIOSes, I usually find it under something along the lines of "Windows settings" in the BIOS. – Ziyad Edher Mar 27 '17 at 17:16
  • fastboot is already disabled. – user62372 Mar 27 '17 at 17:35
  • Check out the following link and see if it helps. http://askubuntu.com/questions/670509/error-parsing-pcc-subspaces-from-pcct-acpi-pcc-probe-failed – Ziyad Edher Mar 27 '17 at 18:31
  • I'm not really sure what to do with the suggestions in that link – user62372 Mar 28 '17 at 00:53
  • This solved it: http://askubuntu.com/questions/137655/boot-drops-to-a-initramfs-prompts-busybox – user62372 Mar 28 '17 at 18:52

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