Difference between revisions of "linux serial console"
From thelinuxwiki
(Created page with " [https://www.kernel.org/doc/Documentation/serial-console.txt kernel.org guide] category:console") |
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| + | == /etc/inittab file config == | ||
| + | |||
| + | make sure the two serial console lines are uncommented | ||
| + | |||
| + | # SERIAL CONSOLES | ||
| + | s0:12345:respawn:/sbin/agetty -L 115200 ttyS0 vt100 | ||
| + | s1:12345:respawn:/sbin/agetty -L 115200 ttyS1 vt100 | ||
| + | |||
| + | |||
| + | == legacy grub (0.97 version) config == | ||
| + | |||
| + | add console info (in bold below) to kernel line(s) of menu.lst | ||
| + | |||
| + | title=Gentoo Linux (3.10.17-gentoo) | ||
| + | root (hd0,0) | ||
| + | kernel /boot/vmlinuz root=/dev/sda3 '''console=ttyS0,115200 console=tty0''' | ||
| + | initrd /boot/initramfs | ||
| + | |||
| + | |||
| + | == problem == | ||
| + | |||
| + | I am missing the kernel boot messages between the two lines below. I can see what should be there on the monitor, but not on the serial. Not sure what I am doing wrong... | ||
| + | |||
| + | Freeing unused kernel memory: 816k freed | ||
| + | ... | ||
| + | This is mylinuxbox.unknown_domain (Linux x86_64 3.10.17-gentoo) 07:15:10 | ||
| + | <br>mylinuxbox login: | ||
| + | |||
| + | == links == | ||
| + | |||
[https://www.kernel.org/doc/Documentation/serial-console.txt kernel.org guide] | [https://www.kernel.org/doc/Documentation/serial-console.txt kernel.org guide] | ||
| + | |||
| + | [http://www.gentoo-wiki.info/HOWTO_Linux_serial_console gentoo-wiki.info - HOWTO_Linux_serial_console] | ||
| + | |||
[[category:console]] | [[category:console]] | ||
Latest revision as of 00:07, 15 February 2016
Contents |
/etc/inittab file config
make sure the two serial console lines are uncommented
# SERIAL CONSOLES s0:12345:respawn:/sbin/agetty -L 115200 ttyS0 vt100 s1:12345:respawn:/sbin/agetty -L 115200 ttyS1 vt100
legacy grub (0.97 version) config
add console info (in bold below) to kernel line(s) of menu.lst
title=Gentoo Linux (3.10.17-gentoo) root (hd0,0) kernel /boot/vmlinuz root=/dev/sda3 console=ttyS0,115200 console=tty0 initrd /boot/initramfs
problem
I am missing the kernel boot messages between the two lines below. I can see what should be there on the monitor, but not on the serial. Not sure what I am doing wrong...
Freeing unused kernel memory: 816k freed ... This is mylinuxbox.unknown_domain (Linux x86_64 3.10.17-gentoo) 07:15:10
mylinuxbox login:
