Hi, I have tried to dd your experimental Horizon iso and to boot it on my Lenovo laptop, but I only see an endless black screen, without even getting to a grub menu. My machine uses UEFI by default, so I have set the boot to Legacy and disabled secure boot. My laptop has an Intel i5 motherboard with a dual graphics card Intel/Radeon 8500. Is there anything else I could do? I have run other live distros from the same USB sticks and they all boot without issues. Thanks for your assistance.