Hope this will help with the 9.04 sound problem.
Running a new install of Linux Mint Gloria.
I got sound working on an Intel Corporation 82801I chip on hp dv3-2157cl with these 3 steps
1. Install as usual, and do all the updates to kernel 2.6.28.14
2. Install Alsa 1.0.20 from this forum:
http://monespaceperso.org/blog-en/2009/ ... aunty-904/
Reboot
3. Open a terminal and edit alsa-base.conf as follows:
sudo gedit /etc/modprobe.d/alsa-base.conf
When the file is open add the following lines to the end of the file after "options snd-pcsp index=-2"
alias snd-card-0 snd-hda-intel
alias sound-slot-0 snd-hda-intel
options snd-hda-intel model=dell-m4-1 enable_msi=1
Save/close and reboot
The volume is a little low, but sound works. I pegged out all the sliders.
If anyone has a suggestion for increasing the volume, please post.
Turns out my volume is fine. I was using a low volume test file!