- #Minicom configuration how to#
- #Minicom configuration install#
- #Minicom configuration serial#
- #Minicom configuration manual#
- #Minicom configuration Offline#
The last specified console= will be set as /dev/console.Īt boot, systemd-getty-generator(8) will start a getty instance for each console specified in the kernel command line.
#Minicom configuration serial#
Kernel's output can be sent to serial console by setting the console= kernel parameter. Read Syslinux Wiki:Config#SERIAL for the directive's options. The serial parameters are hardcoded to 8 bits, no parity and 1 stop bit. To enable serial console in Syslinux, edit syslinux.cfg and add SERIAL as the first directive in the configuration file.įor COM1 ( /dev/ttyS0) with baud rate of 115200 bit/s: REFInd supports serial console only in text mode. If no key is pressed, the boot menu will appear on whichever (serial or console) appears first in the terminal configuration line. Note: When the terminal -timeout=5 serial console line is added to your menu.lst, your boot sequence will now show a series of Press any key to continue messages.
#Minicom configuration manual#
Read GRUB's manual on Using GRUB via a serial line and the serial command for detailed explanation of the available options.Įdit the GRUB Legacy configuration file /boot/grub/menu.lst and add these lines to the general area of the configuration: GRUB_SERIAL_COMMAND="serial -unit=0 -speed=115200" For COM1 ( /dev/ttyS0) with baud rate of 115200 bit/s: Next add the GRUB_SERIAL_COMMAND variable and set the options for the serial connection. When using GRUB with a generated grub.cfg, edit /etc/default/grub and enable serial input and output support:
#Minicom configuration how to#
Maybe the BAUD rate isn't negotiated automatically and needs to be configured, but I have no idea how to figure out the correct value.
#Minicom configuration install#
I'm suspicious that I don't have to install or configure anything on the server side except turning on the serial port in the UEFI. I payed attention to match the device file to connect to with the one printed in dmesg. In the footer for the former and both terminals don't take any input.
#Minicom configuration Offline#
Or putty, I see CTRL-A Z for help | 115200 8N1 | NOR | Minicom 2.7.1 | VT102 | Offline | ttyUSB0 When I try to connect to the server using sudo minicom -D /dev/ttyUSB0 I read about the possibility to specify a serial console to GRUB and related kernel parameters, however I don't find any clear statement whether that's necessary or not to be able to connect after the system booted (I don't need to be able to connect to GRUB's console for now). On the server side the output of dmesg | grep tty is printk: console enabled To be printed in dmesg after it's plugged-in. usb 3-1.1: pl2303 converter now attached to ttyUSB0 The laptop doesn't have a serial port, so I use a Serial-USB adapter which causes pl2303 3-1.1:1.0: pl2303 converter detected On the server, I connected a RS232 to D-Sub connector (DB9) to the serial port of the motherboard and plugged in a gender changer. Its UEFI has an option to enable/disable the serial port which I set to enable - smart as I am - and to select 3F8h/IRQ4 or 3E8h/IRQ4 for the "Serial Port Address" where I left the initially selected 3F8h/IRQ4 without knowing what the values stand for. The motherboard is an ASRock X99 Extreme3. I'd like be able to establish a connection to a headless Ubuntu 18.04 server from a Ubuntu 18.04 laptop via serial console in order to avoid having a graphic card consuming energy in the server.