My guess it that it is video driver / hardware dependent, but I wasn't able to exactly pinpoint where the issue is. I couldn't find any documentation as to which device is the correct one to use, but /dev/tty0 seems to be used by larger projects (logind, GDM) and thus is probably better tested.
I'm using a Toshiba P50W with Intel Haswell-ULT graphics and running 16.04 LTS.
My guess it that it is video driver / hardware dependent, but I wasn't able to exactly pinpoint where the issue is. I couldn't find any documentation as to which device is the correct one to use, but /dev/tty0 seems to be used by larger projects (logind, GDM) and thus is probably better tested.
I'm using a Toshiba P50W with Intel Haswell-ULT graphics and running 16.04 LTS.