In our Android 9+ versions, we include the ability to use a Grub command for enabling Vulkan mode on supported graphics hardware.
However, from Bliss OS 14.10, you don't have to to worry about triggering this value as we removed VULKAN=1
from the OS.
When your PC reboots, it's initially shows a grub menu. tap "e" to edit the current selection and add the VULKAN=1 to the end of the line that starts with "kernel", then follow the on-screen prompts to boot with those edits.
If it works, then edit Grub from your main OS, and add the flag there.
menuentry 'Bliss-x86 Test-Vulkan' --class bliss { search --file --no-floppy --set=root /AndroidOS/android.boot linux /AndroidOS/kernel root=/dev/ram0 SRC=/AndroidOS androidboot.selinux=permissive GRALLOC=minigbm HWC=drm_minigbm quiet DATA= VULKAN=1 initrd /AndroidOS/initrd.img }