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

[reece callister]

this is also affecting my bios on the lenovo ideapad 100 15iby however usb booting is still possible.
the troubleshooting steps i have taken are.
1) used lenovo's bios update utility from the drivers site of my bios 
  https://download.lenovo.com/consumer/mobiles/cccn21ww.exe (direct link)
2)replaced CMOS battery
3)reached out to the staff of lenovo forums and support staff for help and it stumped them
4)tried different OS's (i had ubuntu 17.10 but win server 2016 killed the grub loader (unrelated))
   i tried win server 2016 & win8.1 (the modded version windows 9)
all these were in vein as its still not saving (btw the reason i need server 2016 is to host RDweb applications which you need intel virtualisation on which is how i found this issue)
if anyone has any solution to this pls email me at ngprules62 at gmail.com or reply to this

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to grub2 in Ubuntu.
https://bugs.launchpad.net/bugs/1734147

Title:
  Ubuntu 17.10 corrupting BIOS - many LENOVO laptops models

Status in grub2 package in Ubuntu:
  Fix Released

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)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1734147/+subscriptions