I’ve been unsuccessful in getting a properly working system today, installing from a freshly downloaded LiveGnome.iso from the Debian page.
The first install actually crashed, because the USB drive was jostled.
The second install went fine, but had no USB support (hub devices seen, but no attached devices seen)
Now I’m doing a third install.
The live installer sucks.
It is called Calamares, it is not well maintained upstream, and it doesn’t support even trivial complexity like LVM or Encryption.
Use the regular install DVD or Netinst. You get to choose your desktop environment in the process.