This team is a group of HP Pavilion dvXz owners and/or developers interested in getting it to work 100% under Linux. This laptop "z" series features a discrete ATI graphics card and comes with different screen size configurations (dv2/dv4/dv5/dv6/dv7/Compaq-CQ4x).

You can check the model and details of you laptop with these commands:
sudo dmidecode -s system-product-name
sudo dmidecode -s system-version
lspci -vnnn | perl -lne 'print if /^\d+\:.+(\[\S+\:\S+\])/'

There are currently around ~90 users that have installed Linux (not only Ubuntu) on this laptop, some of them members of this Launchpad group.

Please subscribe to this team if you are new and own or develop for this HP Pavilion dvXz series laptop with discrete ATI graphics card (not the one with Intel or Nvidia graphics). Also, participate to the poll below if you have time:
Current poll:
http://www.doodle.com/tpsnvcx8bmg6c4ux
Log for June 2009 Poll:
http://www.doodle.com/4ntitp5pwnbevkxe

Installation reports:
http://www.linlap.com/wiki/hp+pavilion+dv5z
http://swiss.ubuntuforums.org/showpost.php?p=6789782&postcount=1
http://aldeby.org/blog/index.php/howto-ubuntu-linux-on-hp-pavilion-dv2000-dv6000-dv9000-series-laptops

Some users of this laptop seem to be having troubles getting all sound features to work. In several cases, these problems seem to have been solved by using Ubuntu 9.04 (sometimes 8.10). Some other reports on ways to solving them here:

For Karmic, add these lines to /etc/modprobe.d/alsabase.conf:

options snd-pcsp index=-2
alias snd-card-0 snd-hda-intel
alias sound-slot-0 snd-hda-intel
options snd-hda-intel model=hp-m4
options snd-hda-intel enable_msi=1
and install linux-backport-modules-karmic and linux-backport-modules-alsa-karmic-generic.

http://ubuntuforums.org/showpost.php?p=6938038&postcount=20
http://ubuntuforums.org/showpost.php?p=6975253&postcount=21
http://ubuntuforums.org/showpost.php?p=6194461&postcount=3
http://ubuntuforums.org/showpost.php?p=7299632&postcount=60
http://www.uluga.ubuntuforums.org/showpost.php?p=7319001&postcount=26
http://ubuntuforums.org/archive/index.php/t-1013750.html
http://ubuntuforums.org/showpost.php?p=6714192&postcount=5

Issues with sound on the dv4-1222nr can be solved by following this thread:
http://ubuntuforums.org/showthread.php?t=1117534

There are wireless issues with Ubuntu 8.04, but these seem to be solved in 9.04 or 8.10.

A few people has reported issues with screen brightness control. A possible solution here:
http://lofspot.net/blog/2009/1/12/reduce-brightness-on-hp-pavilion-dv5-1020ep-ubuntu-810-64-bi.html

Some users have issues with the Atheros driver. A possible solution here:
http://blog.hyperandy.com/2008/11/01/atheros-ar242x-ubuntu-810-ibex/
http://madberry.org/2008/11/how-to-get-atheros-ar242x-to-work-on-810-intrepid-ibex
http://ubuntuforums.org/showthread.php?t=1120259

Some users have issues with the r8168 ethernet device. A possible solution here:
https://bugs.launchpad.net/ubuntu/+bug/208012

Some users have issues with suspend. A possible solution here:
https://wiki.ubuntu.com/LaptopTestingTeam/HPDV51124CA
http://ubuntuforums.org/showpost.php?p=7336886&postcount=6

On the dv4-1222nr you can add i8042.reset to your boot options to fix suspend/hibernate:
http://ubuntuforums.org/showthread.php?t=1047284

Some users have issues with the SD card reader. No solution has been found yet:
http://ubuntuforums.org/showthread.php?t=1167228

Internal launchpad mailing list:
http://lists.launchpad.net/dv4z/