This instruction show you how to install Ubuntu with serial console without VGA. We have tested the following instructions under UEFI boot and legacy boot mode.
Modify the following files. If you still use legacy bios boot mode, modify isolinux/isolinux.cfg
, isolinux/txt.cfg
, syslinux.cfg
. If you use UEFI boot mode, modify boot/grub/grub.cfg
only.
isolinux/isolinux.cfg
# D-I config version 2.0
include menu.cfg
default menu.c32
prompt 0
timeout 0
isolinux/txt.cfg
default install
label install
menu label ^Install Ubuntu Server
kernel /install/vmlinuz
append vga=normal initrd=/install/initrd.gz -- console=tty0 console=ttyS0,115200n8 nosplash debug -
syslinux.cfg
CONSOLE 0
SERIAL 0 115200 0
default menu.c32
prompt 0
menu title UNetbootin
timeout 100
label unetbootindefault
kernel /ubnkern
append vga=normal initrd=/ubninit nomodeset askmethod console=tty0 console=ttyS0,115200n8
boot/grub/grub.cfg
Add serial console options and remove quiet option in the menuentry of "Insatall Ubuntu Server"
menuentry "Install Ubuntu Server" {
set gfxpayload=keep
linux /install/vmlinuz file=/cdrom/preseed/ubuntu-server.seed vga=normal console=tty0 console=ttyS0,115200n8 ---
initrd /install/initrd.gz
}
Enter BIOS.
Setup serial port setting to allow console redirection.
Enter "Advanced Setup Configurations" Tab
Enter "Super IO Configuration" option
Serial Port 0 Configuration /Serial Port 1 Configuration
Serial Port: Enabled
Enter "Serial Port Console Redirection" option
Terminal Type: VT100+
Bits Per second: 115200
Data Bits: 8 Bits
Parity: None
Stop Bits: 1
Flow Control: None
VT-UTF8 Combo Key Support: Enabled
Recorder Mode: Disabled
Resolution 100x31: Enabled
Legacy OS Redirection Resolution: 80x25
Putty KeyPad: VT100
Redirection After BIOS Post: Always Enable
Select boot partition
Set UEFI USB disk boot
or USB disk
as first boot priority at Boot Option
Save current BIOS configuration and reboot
% screen /dev/ttyS0 115200
Proceed normal Ubuntu installation.
At the phase of GRUB installation, select your correct boot disk for boot loader. An Ubuntu 14.04 installation boot disk may be "/dev/sda" in case that you use USB boot.
/dev/sdb
Install SSH daemon and avahi-daemon to configure the system after this installation.
(Optional) When you see the dialog at "Finish the installation", check "
$ ip addr show
editing mode
of grub boot option with key e
, when you see grub boot menu on serial console.Add console options after ro
in linux boot options
linux ..... ro console=tty0 console=ttyS0,115200n8
Ctrl-x
Grub configuration
GRUB_CMDLINE_LINUX_DEFAULT=""
GRUB_TERMINAL='serial console'
GRUB_CMDLINE_LINUX="console=tty0 console=ttyS0,115200n8"
GRUB_SERIAL_COMMAND="serial --speed=115200 --unit=0 --word=8 --parity=no --stop=1"
# update-grub