Bug#918322: initramfs-tools: kernel fails to boot with "Gave up waiting for root file system device"

[Isaac Gelado]

I am having this very same issue. If I run

udevadm trigger --type=subsystems --action=add
udevadm trigger --type=devices --action=add

in the initramdfs shell, it does nothing at all. However, if I run

udevadm trigger --type=subsystems --action=add -v
udevadm trigger --type=devices --action=add -v

it loads the necessary modules. Adding the extra `-v` to the
initramfs-tools script seems to work, but makes the boot quite bloated
of text :-)