First $vulkaninfo => OK
Switch on Intel with NVIDIA X Server settings
reboot
Switch to NVIDIA with NVIDIA X Server settings
reboot
$vulkaninfo => VK_ERROR_INITIALIZATION_FAILED
$sudo vulkaninfo => OK
then
vulkaninfo => OK
So now before launch Steam to play games that use vulkan I always do sudo vulkaninfo
Same bug here on two different laptop.
Fresh install Ubuntu 18.04.2
nvidia-driver-418
4.18.0-18-generic
First $vulkaninfo => OK INITIALIZATION_ FAILED
Switch on Intel with NVIDIA X Server settings
reboot
Switch to NVIDIA with NVIDIA X Server settings
reboot
$vulkaninfo => VK_ERROR_
$sudo vulkaninfo => OK
then
vulkaninfo => OK
So now before launch Steam to play games that use vulkan I always do sudo vulkaninfo