Cesare.
I've added some details in #913138, which I believe is the same bug as
this one.
There a commenter suggested two kernel parameters that, so far, have
resolved the problem for me.
- Bug#913119: linux-image-4.18.0-2-amd64: Hangs on lvm r... Cesare Leonardi
- Bug#913119: linux-image-4.18.0-2-amd64: Hangs on ... Cesare Leonardi
- Bug#913119: linux-image-4.18.0-2-amd64: Hangs... Hans van Kranenburg
- Bug#913119: linux-image-4.18.0-2-amd64: H... Cesare Leonardi
- Bug#913119: linux-image-4.18.0-2-amd6... Hans van Kranenburg