I can confirm the same problem on Lenovo Yoga 2 11". Model Name: 20332.
TL;DR: Bios does not save any changes, i.e. Secure Boot cannot be switched back on USB boot devices are not detected I wanted to install Ubuntu along Windows 10 (dual boot). It was clean an simple install of Ubuntu 17.04. When I installed 17.04 version I found out that I need to disable Secure Boot in Bios in order for WiFi module to work with included proprietary drivers. Which I did and Wifi worked fine.Then I upgraded to 17.10, the upgrade process was simple and no errors shown. After playing with 17.10 for a bit I wanted to boot back into Windows and was greeted by black screen and no disk activity after selecting Windows Boot Manager. I thought that the problem may be because Secure boot was still disabled in Bios. I went into Bios and tried to enable it. Obviously it had no effect since after several attempts I went into Bios and realised that any changes I make in Bios are not saved anymore like for almost everyone on this thread. Then I tried to boot from Ubuntu Live 17.04, thinking that may be I would be able to debug better in the previous Ubuntu version. Then I realised that I can't boot with the very same bootable flash disk I used to install Ubuntu 17.04. This leaves me with a (currently still) working version of Ubuntu 17.10, no ability to boot into Windows Safe/Recovery Mode and no option to boot from bootable USB disks. When I install/upgrade an OS I am prepared to lose the data on the HDD, in the worst case scenario... But not to brick the motherboard/system!!! :-O What year is this? 1985? Any help appreciated. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1734147 Title: Ubuntu 17.10 corrupting BIOS - many LENOVO laptops models To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1734147/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
