Comment 23 for bug 591823

Yep, still getting this tty spam multiple times every time update-grub runs from apt. Not when running update-grub, not when running dpkg-reconfigure linux-image-*, only when running apt install. So probably this should be a bug on apt.

Suppressing it by setting LVM_SUPPRESS_FD_WARNINGS works, of course, but I would be happy if someone could suggest a way for setting it implicitly when running sudo apt upgrade. sudo -i apt upgrade works, but I keep forgetting to do it. :-)