[16:16] <Laibsch> One of my USB disks is not showing up in gnome-disks (which I assume is powered by udisks2).  How do I go about finding out the reason?  lsusb and fdisk show the disk just fine.
[16:16] <Laibsch> and I can mount it, too, but only manually, even with udiskctl.  It isn't automounted.