Bug#524463: grub fails to boot if an usb mouse is plugged during the 5s of menu

[Alain Bkt]

Package: grub
Version: 0.97-47lenny2
Severity: important

This is 100% reproducible on my laptop.
If i plug my usb mouse during the grub menu, then
it only display the first line of boot process:
booting kernel xyz 

and nothing happens, reboot with CTRL-ALT-DEL is needed.

-- Package-specific info:

*********************** BEGIN /boot/grub/device.map
(hd0)	/dev/sda
*********************** END /boot/grub/device.map

*********************** BEGIN /proc/mounts
/dev/sda2 / ext3 rw,noatime,errors=remount-ro,data=ordered 0 0
/dev/sda5 /boot ext3 rw,errors=continue,data=ordered 0 0
/dev/sda8 /home ext3 rw,noatime,errors=continue,data=ordered 0 0
*********************** END /proc/mounts

*********************** BEGIN /boot/grub/menu.lst
# menu.lst - See: grub(8), info grub, update-grub(8)
#            grub-install(8), grub-floppy(8),
#            grub-md5-crypt, /usr/share/doc/grub
#            and /usr/share/doc/grub-legacy-doc/.

default		0

## timeout sec
# Set a timeout, in SEC seconds, before automatically booting the default entry
# (normally the first entry defined).
timeout		5

# Pretty colours
color cyan/blue white/blue

# Put static boot stanzas before and/or after AUTOMAGIC KERNEL LIST

title		Lenny sda2, kernel 2.6.26-al
root		(hd0,4)
kernel		/vmlinuz-2.6.26-al root=/dev/sda2 ro 
initrd		/initrd.img-2.6.26-al

title		Gutsy sda6, kernel 2.6.24-23-generic
root		(hd0,4)
kernel		/vmlinuz-2.6.24-23-generic root=/dev/sda6 ro 
initrd		/initrd.img-2.6.24-23-generic

### BEGIN AUTOMAGIC KERNELS LIST
## lines between the AUTOMAGIC KERNELS LIST markers will be modified
## by the debian update-grub script except for the default options below

## DO NOT UNCOMMENT THEM, Just edit them to your needs

## ## Start Default Options ##
## default kernel options
## default kernel options for automagic boot options
## If you want special options for specific kernels use kopt_x_y_z
## where x.y.z is kernel version. Minor versions can be omitted.
## e.g. kopt=root=/dev/hda1 ro
##      kopt_2_6_8=root=/dev/hdc1 ro
##      kopt_2_6_8_2_686=root=/dev/hdc2 ro
# kopt=root=/dev/sda2 ro

## default grub root device
## e.g. groot=(hd0,0)
# groot=(hd0,4)

## should update-grub create alternative automagic boot options
## e.g. alternative=true
##      alternative=false
# alternative=false

## should update-grub lock alternative automagic boot options
## e.g. lockalternative=true
##      lockalternative=false
# lockalternative=false

## additional options to use with the default boot option, but not with the
## alternatives
## e.g. defoptions=vga=791 resume=/dev/hda5
# defoptions=

## should update-grub lock old automagic boot options
## e.g. lockold=false
##      lockold=true
# lockold=false

## Xen hypervisor options to use with the default Xen boot option
# xenhopt=

## Xen Linux kernel options to use with the default Xen boot option
# xenkopt=console=tty0

## altoption boot targets option
## multiple altoptions lines are allowed
## e.g. altoptions=(extra menu suffix) extra boot options
##      altoptions=(single-user) single
# altoptions=(single-user mode) single

## controls how many kernels should be put into the menu.lst
## only counts the first occurence of a kernel, not the
## alternative kernel options
## e.g. howmany=all
##      howmany=7
# howmany=2

## should update-grub create memtest86 boot option
## e.g. memtest86=true
##      memtest86=false
# memtest86=false

## should update-grub adjust the value of the default booted system
## can be true or false
# updatedefaultentry=false

## should update-grub add savedefault to the default options
## can be true or false
# savedefault=false

## ## End Default Options ##

title		Debian GNU/Linux, kernel 2.6.26-1-686
root		(hd0,4)
kernel		/vmlinuz-2.6.26-1-686 root=/dev/sda2 ro 
initrd		/initrd.img-2.6.26-1-686

title		Debian GNU/Linux, kernel 2.6.26-1-686 (single-user mode)
root		(hd0,4)
kernel		/vmlinuz-2.6.26-1-686 root=/dev/sda2 ro single
initrd		/initrd.img-2.6.26-1-686

### END DEBIAN AUTOMAGIC KERNELS LIST
*********************** END /boot/grub/menu.lst

-- System Information:
Debian Release: 5.0
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: i386 (i686)

Kernel: Linux 2.6.26-al (SMP w/2 CPU cores)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages grub depends on:
ii  grub-common             1.96+20080724-16 GRand Unified Bootloader, version 
ii  libc6                   2.7-18           GNU C Library: Shared libraries
ii  libncurses5             5.7+20081213-1   shared libraries for terminal hand

grub recommends no packages.

Versions of packages grub suggests:
pn  grub-legacy-doc               <none>     (no description available)
pn  mdadm                         <none>     (no description available)
pn  multiboot-doc                 <none>     (no description available)

-- no debconf information