1. I had problem that sound had lag in Flash. (Other than that, there was no problem.) On the internet, I found that installing OSS4 might help me.

2. So I installed OSS4, but there was some problems (no sound on Flash, and couldn't use function key on the laptop - which is quite annoying), so I try to remove OSS4 and re-installing sound modules.

3. After some mess-up, the whole sound was gone.

I used Ubuntu for a year, but I don't know how to use the terminal well (All I know is basic commands like sudo, ls, or apt-get)..

Now I'm trying to recover by following instructions at this page, but I have some problems... :(

When I try to follow instructions:

1. sudo aplay -l finds no sound drivers.

2. find /lib/modules/'uname -r' | grep snd (backtick changed to ' due to code markup) returns nothing.

3. When I try to do sudo apt-get install linux-restricted-modules-'uname -r' linux-generic, it says that it can't find linux-restricted-modules-3.0.0-13-generic package.

4. lspci -v | grep -A7 -i "audio" returns this, which doesn't contain anything about the name of the driver.

5. Writing sudo modprobe sn and pressing tab twice only returns sudo modprobe sn9c102.

6. sudo aptitude --purge reinstall linux-sound-base alsa-base alsa-utils linux-image-'uname -r' linux-ubuntu-modules-'uname -r' libasound2 returns this, and didn't change non of above.

7. sudo apt-get install linux-alsa-driver-modules-$(uname -r) fails because it can't find the package linux-alsa-driver-modules-3.0.0-13-generic.

8. Compiling ALSA driver doesn't work. When I try to make, it says that /lib/modules/3.0.0-13-generic/build/include/linux/modversions.h doesn't exist.

I'm using Ubuntu 11.10. Can anyone help me? I can re-install Ubuntu, but I don't want to....