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

[Alexis Rico]

@Mathieu Trudel-Lapierre (cyphermox)
@Dimitri John Ledkov (xnox)

My Lenovo G50-80 was running a Ubuntu 17.10 with no dualboot. The BIOS
didn't allow me to change ANY of the options and USB/DVD boot did not
work for a few weeks or maybe months (I don't check BIOS every day).

Also it seems that grub failed when doing an apt upgrade (gave me a
syscall error I/O) and the laptop turned itself into a brick because the
"ubuntu"EFI entry also stopped working.

Right now I've set up a PXE server and I'm trying to install Windows 10
over LAN. If I can get it to boot, I'll try to apply the latest BIOS
patch (only available for install through Windows) and see if everything
goes back to normal.

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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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