Dear Colleagues.
TL;DR - there is hope!

I've been approached by Anthony from Canonical and later Brian from
Lenovo. We have agreed I will send my Laptop to Lenovo for
investigations. So I wanted to prepare fresh system (clean my personal
data, naturally). After making the hacks and changes I did reboot to
BIOS to make last good-bye photo of the error screen. And to my
surprise, there was none!

My system/BIOS is revived. But I cannot tell definitely, what is the
root of unlocking it.

I'm willing to describe the procedure I think led to recovering it but I
prefer to share it with one or two capable people, to prove it is
working. If it does the trick I will post it here. Since my laptop is no
longer affected I cannot work on a simple(r) solution therefore I need
at least two volunteers.

What is the risk - none, if you won't mistake console parameters.

What is required:

- laptop with the no BIOS save issue and fully operational LINUX system

- second hard drive (not USB but the SATA disc!!)

- readiness to use screwdriver to open your laptop

That's it.

Please PM me and tell me how skillful you consider yourself with Linux
console tools. I will write the step by step guide in response, bit
chaotic because I did it by accident and don't know, what would be the
shortest way to achieve it.

If you don't have working Linux, don't know too well how to use console
- please WAIT until we confirm the solution. I don't have time, patience
etc. to hand-hold everyone. (bit bitter but experienced strange stories
after posting my rEFInd workaround!).

Anyway.

Hope over the weekend we will have solution to some of you!

Marcin

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

Title:
  Ubuntu 17.10 corrupting BIOS - many LENOVO laptops models

Status in linux package in Ubuntu:
  Confirmed
Status in linux source package in Artful:
  Confirmed

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.

  Thank you!!

  #### UPDATE (01/12/2017) ####

  LENOVO machines affected so far (please add your affected model to
  this list):

  Lenovo Y50-70
  Lenovo G40-30
  Lenovo U31-70
  Lenovo G50-70
  Lenovo Z50-70
  Lenovo Yoga Thinkpad (20C0)
  Lenovo G50-80
  Lenovo S20-30
  Lenovo Yoga 2 11" - 20332
  Lenovo B40-70
  Lenovo Z51-70
  Lenovo B50-70
  Lenovo Flex-10

  The bug also affects Acer Aspire E5-771G.

  ---

  Temporary workaround:
  https://forums.lenovo.com/t5/Lenovo-P-Y-and-Z-series/Y50-70-BIOS-Can-t
  -Save-Settings-Or-Exit/m-p/3853208#M157885

  ---

  result from apport-collect 1734147:

  ---

  ApportVersion: 2.20.7-0ubuntu3.5
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  tob        1608 F.... pulseaudio
   /dev/snd/controlC0:  tob        1608 F.... pulseaudio
  CurrentDesktop: ubuntu:GNOME
  DistroRelease: Ubuntu 17.10
  InstallationDate: Installed on 2017-10-22 (37 days ago)
  InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
  MachineType: LENOVO 20378
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-17-generic 
root=UUID=7def04d3-7336-44b2-a084-2415f9dc2328 ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 4.13.0-17.20-generic 4.13.8
  RelatedPackageVersions:
   linux-restricted-modules-4.13.0-17-generic N/A
   linux-backports-modules-4.13.0-17-generic  N/A
   linux-firmware                             1.169
  Tags:  artful wayland-session
  Uname: Linux 4.13.0-17-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 08/12/2015
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 9ECN43WW(V3.03)
  dmi.board.asset.tag: No Asset Tag
  dmi.board.name: Lenovo Y50-70
  dmi.board.vendor: LENOVO
  dmi.board.version: 00000000Not Defined
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Lenovo Y50-70
  dmi.modalias: 
dmi:bvnLENOVO:bvr9ECN43WW(V3.03):bd08/12/2015:svnLENOVO:pn20378:pvrLenovoY50-70:rvnLENOVO:rnLenovoY50-70:rvr00000000NotDefined:cvnLENOVO:ct10:cvrLenovoY50-70:
  dmi.product.family: IDEAPAD
  dmi.product.name: 20378
  dmi.product.version: Lenovo Y50-70
  dmi.sys.vendor: LENOVO

  ---

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