After installing Linux Mint on my laptop, I found that plugging in a speaker to the headphone jack did not mute the speakers. I followed the instructions [here](http://monespaceperso.org/blog-en/2010/05/02/upgrade-alsa-1-0-23-on-ubuntu-lucid-lynx-10-04/) to upgrade my ALSA driver, and now my headphone jack doesn't even output any sound at all. Is there a known fix for this? Here is some information that will probably prove useful:

```
$ cat /proc/asound/version
Advanced Linux Sound Architecture Driver Version 1.0.23.
Compiled on Oct 16 2010 for kernel 2.6.32-21-generic (SMP).

$ cat /proc/asound/card0/codec#* | grep Codec
Codec: Conexant CX20583 (Pebble HSF)
Codec: Intel G45 DEVCTG

```

I'm at a loss as to what to do. If there is more information that would be helpful, please tell me and I'll provide it.