On both of my computers, I am unable to run the live-image. I followed precisely the instructions here and created the install drive with etcher. After selecting the first menu entry
PureOS Live [EFI/GRUB]
grub prints out:
error: no suitable video mode found.
Booting in blind mode
When manually setting gfxterm as terminal output it works again. I added those lines in the boot entry before loading the linux kernel:
insmod efi_gop insmod efi_uga insmod font insmod gfxterm set gfxmode=auto set gfxpayload=keep terminal_output gfxterm
These lines need to be added to grub.cfg