Bug#607493: grub-pc: giving output to serial line *and* console isn't documented very well
Martin Teufel
teufel at cs.uni-frankfurt.de
Sun Dec 19 02:02:17 UTC 2010
Package: grub-pc
Version: 1.98+20100804-10
Severity: wishlist
Tags: upstream
In difference to grub(-legacy), there is no option in grub2 to set a timeout for choosing whether to use the console or the serial line for the bootmenu.
In the grub2 manual, section 13.2.2 it is documented that you can do:
terminal_input [--append|--remove] [terminal1] [terminal2]
I needed some time to realize that that implies you can set
terminal_input serial console
terminal_output serial console
in grub.cfg, so that the menu goes to serial line and console concurrently.
After that, it was just a guess, that
GRUB_TERMINAL="serial console"
in /etc/default/grub would do it.
So my request is to make a clear mention to this in the grub manual section 13.2.2 and maybe include an example in /etc/default/grub like:
#GRUB_TERMINAL="console serial" # for concurrent output of the bootmenu to console and serial line
-- Package-specific info:
*********************** BEGIN /proc/mounts
/dev/sda2 / ext3 rw,relatime,errors=remount-ro,data=ordered 0 0
/dev/sda1 /boot ext3 rw,relatime,errors=continue,data=ordered 0 0
/dev/sda6 /tmp ext3 rw,relatime,errors=continue,data=ordered 0 0
/dev/sda7 /home ext3 rw,relatime,errors=continue,data=ordered 0 0
/dev/sda8 /data ext3 rw,relatime,errors=continue,data=ordered 0 0
*********************** END /proc/mounts
*********************** BEGIN /boot/grub/device.map
(hd0) /dev/disk/by-id/ata-SAMSUNG_HM160HC_S12TJDRZ233094
(hd1) /dev/disk/by-id/ata-CF_CARD_2GB_0
*********************** END /boot/grub/device.map
*********************** BEGIN /boot/grub/grub.cfg
#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#
### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; then
load_env
fi
set default="0"
if [ "${prev_saved_entry}" ]; then
set saved_entry="${prev_saved_entry}"
save_env saved_entry
set prev_saved_entry=
save_env prev_saved_entry
set boot_once=true
fi
function savedefault {
if [ -z "${boot_once}" ]; then
saved_entry="${chosen}"
save_env saved_entry
fi
}
function load_video {
insmod vbe
insmod vga
insmod video_bochs
insmod video_cirrus
}
serial --unit=0 --speed=115200 --word=8 --parity=no --stop=1
terminal_input serial console
terminal_output serial console
set timeout=5
play 480 440 1
### END /etc/grub.d/00_header ###
### BEGIN /etc/grub.d/05_debian_theme ###
set menu_color_normal=cyan/blue
set menu_color_highlight=white/blue
### END /etc/grub.d/05_debian_theme ###
### BEGIN /etc/grub.d/10_linux ###
menuentry 'Debian GNU/Linux, with Linux 2.6.32-5-486' --class debian --class gnu-linux --class gnu --class os {
insmod part_msdos
insmod ext2
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set 2439f5e7-d2bd-4361-98ec-3b64b9e7a18f
echo 'Loading Linux 2.6.32-5-486 ...'
linux /vmlinuz-2.6.32-5-486 root=UUID=8b80e9e9-f8fc-451c-8332-4d168d177977 ro console=tty0 console=ttyS0,115200n8
echo 'Loading initial ramdisk ...'
initrd /initrd.img-2.6.32-5-486
}
menuentry 'Debian GNU/Linux, with Linux 2.6.32-5-486 (recovery mode)' --class debian --class gnu-linux --class gnu --class os {
insmod part_msdos
insmod ext2
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set 2439f5e7-d2bd-4361-98ec-3b64b9e7a18f
echo 'Loading Linux 2.6.32-5-486 ...'
linux /vmlinuz-2.6.32-5-486 root=UUID=8b80e9e9-f8fc-451c-8332-4d168d177977 ro single console=tty0 console=ttyS0,115200n8
echo 'Loading initial ramdisk ...'
initrd /initrd.img-2.6.32-5-486
}
menuentry 'Debian GNU/Linux, with Linux 2.6.26-2-geode' --class debian --class gnu-linux --class gnu --class os {
insmod part_msdos
insmod ext2
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set 2439f5e7-d2bd-4361-98ec-3b64b9e7a18f
echo 'Loading Linux 2.6.26-2-geode ...'
linux /vmlinuz-2.6.26-2-geode root=UUID=8b80e9e9-f8fc-451c-8332-4d168d177977 ro console=tty0 console=ttyS0,115200n8
echo 'Loading initial ramdisk ...'
initrd /initrd.img-2.6.26-2-geode
}
menuentry 'Debian GNU/Linux, with Linux 2.6.26-2-geode (recovery mode)' --class debian --class gnu-linux --class gnu --class os {
insmod part_msdos
insmod ext2
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set 2439f5e7-d2bd-4361-98ec-3b64b9e7a18f
echo 'Loading Linux 2.6.26-2-geode ...'
linux /vmlinuz-2.6.26-2-geode root=UUID=8b80e9e9-f8fc-451c-8332-4d168d177977 ro single console=tty0 console=ttyS0,115200n8
echo 'Loading initial ramdisk ...'
initrd /initrd.img-2.6.26-2-geode
}
menuentry 'Debian GNU/Linux, with Linux 2.6.26-2-486' --class debian --class gnu-linux --class gnu --class os {
insmod part_msdos
insmod ext2
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set 2439f5e7-d2bd-4361-98ec-3b64b9e7a18f
echo 'Loading Linux 2.6.26-2-486 ...'
linux /vmlinuz-2.6.26-2-486 root=UUID=8b80e9e9-f8fc-451c-8332-4d168d177977 ro console=tty0 console=ttyS0,115200n8
echo 'Loading initial ramdisk ...'
initrd /initrd.img-2.6.26-2-486
}
menuentry 'Debian GNU/Linux, with Linux 2.6.26-2-486 (recovery mode)' --class debian --class gnu-linux --class gnu --class os {
insmod part_msdos
insmod ext2
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set 2439f5e7-d2bd-4361-98ec-3b64b9e7a18f
echo 'Loading Linux 2.6.26-2-486 ...'
linux /vmlinuz-2.6.26-2-486 root=UUID=8b80e9e9-f8fc-451c-8332-4d168d177977 ro single console=tty0 console=ttyS0,115200n8
echo 'Loading initial ramdisk ...'
initrd /initrd.img-2.6.26-2-486
}
### END /etc/grub.d/10_linux ###
### BEGIN /etc/grub.d/20_linux_xen ###
### END /etc/grub.d/20_linux_xen ###
### BEGIN /etc/grub.d/20_memtest86+ ###
menuentry "Memory test (memtest86+)" {
insmod part_msdos
insmod ext2
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set 2439f5e7-d2bd-4361-98ec-3b64b9e7a18f
linux16 /memtest86+.bin
}
menuentry "Memory test (memtest86+, serial console 115200)" {
insmod part_msdos
insmod ext2
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set 2439f5e7-d2bd-4361-98ec-3b64b9e7a18f
linux16 /memtest86+.bin console=ttyS0,115200n8
}
menuentry "Memory test (memtest86+, experimental multiboot)" {
insmod part_msdos
insmod ext2
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set 2439f5e7-d2bd-4361-98ec-3b64b9e7a18f
multiboot /memtest86+_multiboot.bin
}
menuentry "Memory test (memtest86+, serial console 115200, experimental multiboot)" {
insmod part_msdos
insmod ext2
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set 2439f5e7-d2bd-4361-98ec-3b64b9e7a18f
multiboot /memtest86+_multiboot.bin console=ttyS0,115200n8
}
### END /etc/grub.d/20_memtest86+ ###
### BEGIN /etc/grub.d/30_os-prober ###
menuentry "Debian GNU/Linux, kernel 2.6.26-1-486 (on /dev/sdb1)" {
insmod part_msdos
insmod ext2
set root='(hd1,msdos1)'
search --no-floppy --fs-uuid --set a137b12b-01f7-4e89-ae64-4cb886cac7aa
linux /boot/vmlinuz-2.6.26-1-486 root=/dev/hda1 ro console=tty0 console=ttyS0,115200n8
initrd /boot/initrd.img-2.6.26-1-486
}
menuentry "Debian GNU/Linux, kernel 2.6.26-1-486 (single-user mode) (on /dev/sdb1)" {
insmod part_msdos
insmod ext2
set root='(hd1,msdos1)'
search --no-floppy --fs-uuid --set a137b12b-01f7-4e89-ae64-4cb886cac7aa
linux /boot/vmlinuz-2.6.26-1-486 root=/dev/hda1 ro console=tty0 console=ttyS0,115200n8 single
initrd /boot/initrd.img-2.6.26-1-486
}
### END /etc/grub.d/30_os-prober ###
### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries. Simply type the
# menu entries you want to add after this comment. Be careful not to change
# the 'exec tail' line above.
### END /etc/grub.d/40_custom ###
### BEGIN /etc/grub.d/41_custom ###
if [ -f $prefix/custom.cfg ]; then
source $prefix/custom.cfg;
fi
### END /etc/grub.d/41_custom ###
*********************** END /boot/grub/grub.cfg
-- System Information:
Debian Release: squeeze/sid
APT prefers testing
APT policy: (500, 'testing')
Architecture: i386 (i586)
Kernel: Linux 2.6.32-5-486
Locale: LANG=en_US.UTF-8, LC_CTYPE=de_DE (charmap=ISO-8859-1)
Shell: /bin/sh linked to /bin/dash
Versions of packages grub-pc depends on:
ii debconf [debconf-2.0] 1.5.36 Debian configuration management sy
ii grub-common 1.98+20100804-10 GRand Unified Bootloader, version
ii libc6 2.11.2-7 Embedded GNU C Library: Shared lib
ii libdevmapper1.02.1 2:1.02.48-4 The Linux Kernel Device Mapper use
ii ucf 3.0025+nmu1 Update Configuration File: preserv
grub-pc recommends no packages.
Versions of packages grub-pc suggests:
pn desktop-base <none> (no description available)
-- debconf information:
grub2/kfreebsd_cmdline:
grub2/device_map_regenerated:
* grub2/linux_cmdline: console=tty0 console=ttyS0,115200n8
grub-pc/install_devices_empty: false
grub-pc/install_devices_failed: false
* grub-pc/chainload_from_menu.lst: true
grub-pc/kopt_extracted: true
* grub-pc/install_devices: /dev/disk/by-id/ata-SAMSUNG_HM160HC_S12TJDRZ233094
grub-pc/postrm_purge_boot_grub: false
grub-pc/install_devices_failed_upgrade: true
grub-pc/disk_description:
grub2/kfreebsd_cmdline_default: quiet
grub-pc/partition_description:
grub-pc/install_devices_disks_changed:
grub2/linux_cmdline_default: quiet
grub-pc/mixed_legacy_and_grub2: true
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