How can I have grub start by default on an external monitor? My problem is that my laptop screen is broken/unresponsive, and I cannot see grub, as the external monitor is started only once grub has selected Ubuntu! I can hear the grub beep, count the 5 seconds timeout, but I never am able to access the grub menu?
Unfortunately, the method in this this post changing defaults in /etc/default/grub does not seem to work:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash video=LVDS-1:d"
and I replaced LVDS-1:d with DP-1-2-2, from:
$ xrandr -q
eDP-1-1 connected
DP-1-2 disconnected
DP-1-2-2 connected
DP-1-2-3 connected primary
But this does not work, I don't see grub, and the monitor only starts once Ubuntu has been selected. I can think of 3 explanations:
- I am not specifying the screen the right way? What is the
dinLVDS-1:d? - I use actually encryption, not sure if that changes anything
- Laptop is connected to a dock, which handles the dp ports
Any idea? Thanks!!
Thanks!
