This is howto ubuntu 9.04 have a sound and keep beep in you tablet PC :D , i try to search in google and there are problem in Jaunty
for me :
1. Pen pointer
for sound i find the solution here we go
add the line /etc/modprobe.d/alsa-base.conf
options snd-hda-intel index=0 model=toshiba position_fix=1
options snd-hda-intel index=0 model=acer
for the point 1 , im still do it ...