Also, what version of LightDM? This might have occurred with 1.11.8 which was used at the time the ISO was built. It had an issue where some video hardware wasn't being detected as usable including in VMs. It has since been replaced with 1.11.9 which should start fine.
Also, what version of LightDM? This might have occurred with 1.11.8 which was used at the time the ISO was built. It had an issue where some video hardware wasn't being detected as usable including in VMs. It has since been replaced with 1.11.9 which should start fine.