Ubuntu 9.04 keyboard and mouse problem

I just found Ubuntu 9.04 problem (possibly bug) of keyboard and mouse on my hardware (Dell Vostro 1310, Ubuntu 9.04 kernel 2.6.28-11). In the login splash screen, Ubuntu sometimes does not detect or enable my keyboard and touchpad, so I cannot login to my account.

Many ubuntu dell users also complain about this problem too. Some of them think that it is kernel version problem, so they use the older kernel instead. The others try to configure the xwindow using command xfix in recovery mode or power on and off the laptop.

For me, I use the solution given in this dell ubuntu forum.

Solution : just append the word "i8042.reset" after kernel /boot/vmlinuz-2.6.28-12-generic root=UUID=d655bf5b 3061-44bb-a9d8-2d6d9b4afc57 ro quiet splash of "/boot/grub/menu.lst"

title Ubuntu 9.04, kernel 2.6.28-12-generic
uuid d655bf5b-3061-44bb-a9d8-2d6d9b4afc57
kernel /boot/vmlinuz-2.6.28-12-generic root=UUID=d655bf5b 3061-44bb-a9d8-2d6d9b4afc57 ro quiet splash i8042.reset
initrd /boot/initrd.img-2.6.28-12-generic
quiet