Just installed 7.04. Sound works out of my main speakers but when I plug headphones into the front jack sound continues from the main speakers and I get no audio from the headphones.
I'm using a Dell Dimension 9150 desktop.
$ lspci | grep -i audio
00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 01)$ cat /proc/asound/cards
0 [Intel ]: HDA-Intel - HDA Intel
HDA Intel at 0xfebfc000 irq 16According to alsamixer the chip is a SigmaTel STAC9221 A1.
$ dpkg -l 'alsa*'
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Installed/Config-files/Unpacked/Failed-config/Half-installed
|/ Err?=(none)/Hold/Reinst-required/X=both-problems (Status,Err: uppercase=bad)
||/ Name Version Description
+++-=====================================-=====================================-==========================================================================================
un alsa <none> (no description available)
ii alsa-base 1.0.13-3ubuntu1 ALSA driver configuration files
ii alsa-oss 1.0.12-1 ALSA wrapper for OSS applications
ii alsa-utils 1.0.13-1ubuntu5 ALSA utilitiesPer several threads on headphone jack issues I added the following to /etc/modprobe.d/alsa-base and rebooted:
options snd-hda-intel model=dell
I also tried:
options snd-had-intel model=ref
Neither has worked. I previously had Fedora Core 5 installed on this machine and the headphone jack worked fine.