I need to show our production logo on an ubuntu 18.04 server in kiosk mode. Because the kernel must be booted in text mode with framebuffer disabled, I try to edit a grub theme to show logo png image. After GRUB_THEME is set in /etc/default/grub:
and boot menu is commented in theme.txt, only a logo image is shown. Then I can see boot logo when booting our machine. But when press up/down arrows on keyboard, the booting is paused. My question is: how to disable interactive keypresses on grub booting?
This is for ubuntu 18.04 server of text mode, root autologin is set in getty service.