[Bug 1734147] Re: Ubuntu 17.10 corrupting BIOS - many LENOVO laptops models

[Tautedorus]

As I mentioned before, I have encountered the exact same problem.
Everything was fine and dandy until I installed the Ubuntu 17.10. I
installed multiple Linux distributions on my machine in the past and
everything was working as expected every single time. As soon as I
installed the Ubuntu 17.10 my laptop firmware had the exact same
symptoms. Lenovo service replaced my laptop’s motherboard and update the
firmware. After that, I tried to install the Ubuntu 17.10 one more time.
And again my laptop’s firmware got broken. Fortunately, Lenovo service
replaced the motherboard.

Now I use Windows 10 with the Fall Creators Update and UEFI works as
expected. After two motherboard replacements I do not want to risk
installing Ubuntu again but I image that my laptop’s firmware will get
corrupted again.

Maybe it is Lenovo’s fault for shipping laptops with broken firmware "by
design". However, that does not explain why other Linux distributions
(including the old versions of Ubuntu) was working fine.

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https://bugs.launchpad.net/bugs/1734147

Title:
  Ubuntu 17.10 corrupting BIOS - many LENOVO laptops models

Status in grub2 package in Ubuntu:
  Incomplete

Bug description:
  Hi all,

  Basically on Lenovo Y50-70 after installing Ubuntu 17.10, many users
  reported a corrupted BIOS.

  It's not possible to save new settings in BIOS anymore and after
  rebooting, the system starts with the old settings.

  Moreover (and most important) USB booting is not possible anymore
  since USB is not recognized. It's very serious, since our machines do
  not have a CDROM.

  Lenovo forums at the moment are full of topics regading this issue.

  For example:

  https://forums.lenovo.com/t5/Lenovo-P-Y-and-Z-series/Y50-70-BIOS-Can-t
  -Save-Settings-or-boot-with-USB/m-p/3849142

  https://forums.lenovo.com/t5/Lenovo-P-Y-and-Z-series/Y50-70-BIOS-Can-t
  -Save-Settings-Or-Exit/m-p/3601285

  https://forums.lenovo.com/t5/Lenovo-P-Y-and-Z-series/y50-70-BIOS-can-t
  -save-settings-and-I-can-t-boot-system/m-p/3865727

  Thank you!!

  #### UPDATE (27/11/2017) ####

  LENOVO machines affected so far:

  Lenovo Y50-70
  Lenovo G40-30
  Lenovo U31-70
  Lenovo G50-70
  Lenovo Z50-70
  Lenovo Yoga Thinkpad (20C0)

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