Public bug reported:
Binary package hint: grub2
After installing Ubuntu 9.10 server edition using a serial console (on
ttyS1), Grub2 fails to use the serial console as output device, and
instead displays the following error messages:
error: bad unit number
error: unknown command `terminal'
error: unknown command `terminal'
These are the contents of /etc/default/grub:
# If you change this file, run 'update-grub' afterwards to update
# /boot/grub/grub.cfg.
GRUB_DEFAULT=0
GRUB_HIDDEN_TIMEOUT=0
GRUB_HIDDEN_TIMEOUT_QUIET=true
GRUB_TIMEOUT="10"
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT=""
GRUB_CMDLINE_LINUX="console=ttyS1,115200n8"
# Uncomment to disable graphical terminal (grub-pc only)
#GRUB_TERMINAL=console
# The resolution used on graphical terminal
# note that you can use only modes which your graphic card supports via VBE
# you can see them in real GRUB with the command `vbeinfo'
#GRUB_GFXMODE=640x480
# Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux
#GRUB_DISABLE_LINUX_UUID=true
# Uncomment to disable generation of recovery mode menu entrys
#GRUB_DISABLE_LINUX_RECOVERY="true"
GRUB_TERMINAL=serial
GRUB_SERIAL_COMMAND="serial --unit=1 --speed=115200 --word=8 --parity=no
--stop=1"
** Affects: grub2 (Ubuntu)
Importance: Undecided
Status: New
--
serial console output does not work
https://bugs.launchpad.net/bugs/514021
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