When the kernel boots and the fb driver initializes and the initramfs starts, the output disappers from the serial console. This seems to correspond to the display output switching to a different mode. It is present during u-boot, Tianocore and grub, however. Is there a way to tell the kernel to not change the mode so that full control via the serial line can be retained? I tried "nomodeset" which I think should do this by disabling modesetting, but it has been ineffective. Is there a way to achieve this?