Booting to ttyS0 in Bullseye/Testing
by mpapet from LinuxQuestions.org on (#52FMD)
I'm having trouble getting a truly headless (no graphics card) running AMD64 Testing to boot to serial console.
I think I got the installer to run by adding
console=tty1 console=ttyS0,115200n8
to the installer's boot incantation and successfully installed Bullseye via the serial console. I accepted the default install options.
Upon rebooting, I see the GRUB2 menu. I can edit the grub2 menu item. However, the same ttySO incantation above doesn't work when booting the installed system.
I was hoping to be able to boot the thing into single user mode to fix GRUB, but unable to get that far and most references to booting to serial are many years old.
Thoughts?


I think I got the installer to run by adding
console=tty1 console=ttyS0,115200n8
to the installer's boot incantation and successfully installed Bullseye via the serial console. I accepted the default install options.
Upon rebooting, I see the GRUB2 menu. I can edit the grub2 menu item. However, the same ttySO incantation above doesn't work when booting the installed system.
I was hoping to be able to boot the thing into single user mode to fix GRUB, but unable to get that far and most references to booting to serial are many years old.
Thoughts?