An annoying thing – my touchpad did not wake up after suspend when installing the newest Ubuntu version (currently 13.10). I had the same problem with 13.04 and probably 12.10, but I had forgotten what the solution was. To avoid some further search next time, the solutions mentioned in https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.20/+bug/59867 works on my Fujitsu-Siemens Amilo Si1520:
jmkhenka (jmkhenka) wrote on 2010-04-25: #103
Found a permanent solution!
and change the line
GRUB_CMDLINE_LINUX_DEFAULT=”quiet splash atkbd.reset”
and run update-grub, reboot and when you press E in grub you will se the entry there.
UPDATE: Still the same problem has the same solution with the newest Ubuntu (14.04 LTS). Don’t forget the `sudo update-grub` command, otherwise the change is not effective.
UPDATE 2 (April 2018): Oh, the irony – I spent hours to find how to solve this problem, even if I had previously wrote a blog post about the same situation years ago (same laptop, Ubuntu 17.10).