I finally got down to do some debugging. I downloaded the grub source
via apt and made some changes to the source code. Specifically, near
line 567 of grub-core/disk/efi/efidisk.c, adding the status code to the
error message:
"failure writing sector 0x%llx to `%s' [status %lx]" with variable
I am experiencing the same issue on the related Lenovo Y700-15ISK (same
machine, 15" version) with Xubuntu 16.04.
This seems to be an issue in grub, not related to the kernel. The error
message string is from grub-core/disk/i386/pc/biosdisk.c in GRUB2. As
far as I can understand the code, the
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