Page 5 of: http://opensecuritytraining.info/IntroBIOS_files/Day2_03_Advanced%20x86%20-%20BIOS%20and%20SMM%20Internals%20-%20SPI%20Flash%20Protection%20Mechanisms.pptx
Talks about "Flash Protection Mechanism"; "Write Protect / Writes blocked / Not Range Specific / SMI# override: Same as Write Protect in previous ICHs for FWH" "Applies to the entire flash chip (Global Flash Protection)" "Provides SMM the ability to determine whether or not a request to unlock the BIOS flash for writing will be permitted" So possibly a situation where the writes are being marshalled to go via the System Management Mode, where there is lack of correct code there to handle it. (Or the opposite). [Or I could be barking up completely the wrong tree] -- 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/linux/+bug/1734147/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
