Got this message today, while updating package "linux-firmware"
Ubuntu server 16.04.4 LTS
4.15.0-24-generic #26~16.04.1-Ubuntu SMP Fri Jun 15 14:35:08 UTC 2018 x86_64
x86_64 x86_64 GNU/Linux
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Preparing to unpack .../linux-firmware_1.157.20_all.deb ...
Unpacking linux-firmware (1.157.20) over (1.157.19) ...
Setting up linux-firmware (1.157.20) ...
update-initramfs: Generating /boot/initrd.img-4.15.0-24-generic
cryptsetup: WARNING: failed to detect canonical device of /dev/sdc1
W: Possibl