• “sudo dmidecode | grep tx” says:

  Product Name: HP Pavilion tx2500 Notebook PC

• Actually, I think I bought mine as a tx2510 US.

There are several threads and many (too many, that's why I thought this page would be useful) pages of forum discussions on this laptop and Ubuntu:

• http://ubuntuforums.org/showthread.php?t=873188 talks about Hardy, but many things are still useful
• http://ubuntuforums.org/showthread.php?p=5469447 for the tablet
• http://ubuntuforums.org/showthread.php?t=442483 about tx1000/tx1120: 116 pages on 6 Dec 2008! It certainly contains some useful info, but you must find it.

In particular, I must thank users thegnark and gali98 for support.

To enable audio, just add the line:

  options snd-hda-intel index=0 model=toshiba position_fix=1

at the end of /etc/modprobe.d/alsa-base.

Notice the following line was also suggested:

  options snd-hda-intel index=0 model=acer

with it sound does work, but speakers keep playing when headphones are plugged in

In Restricted Drivers Manager (System → Administration → Restricted Drivers), enable “wl” driver and reboot.

(In the same window, ATI restricted drivers can be enabled to have grafic acceleration working: I found them unstable, but it was several weeks ago, I'll try again)

Notice there are problems to connect to some WPA Enterprise wireless networks; the following bugs/threads could be of interest:

• http://bugs.launchpad.net/ubuntu/+source/linux/+bug/263963
• http://bugs.launchpad.net/ubuntu/+source/ndiswrapper/+bug/276980
• https://bugs.launchpad.net/ubuntu/+bug/293869
• http://ubuntuforums.org/showthread.php?t=970236&page=2

I also tried adding to my software sources (System → Administration → Software sources):

  deb http://ppa.launchpad.net/network-manager/ubuntu intrepid main

but having last version of network-manager didn't help.

Just follow http://ubuntuforums.org/showpost.php?p=5469447&postcount=5 .

Initially worked, but at wakeup mouse and keyboard didn't work (bug #23497), problem can be solved this way.

However, after some updates, computer will not suspend the second or third time it is asked to, and I will have to reboot: I will try to understand what update exactly broke it.

Did work, then I reinstalled and at the moment I can't find the howto I followed at the time. I implies installing package fprint-demo and editing a pair of files (one was /etc/pam.d/common-auth). Some useful info if you speak Italian is here.