zz 解决ubuntu10.04插上耳机仍有外音问题

特别引用，文章来源：http://blog.csdn.net/xlfarm/article/details/6771997

第一步：Upgrade
Alsa (1.0.23) on Ubuntu Lucid Lynx 10.04 （升级声卡驱动）

注意：方框里的命令都需要在终端里运行，其中要联网下载东西，这段时间最长，可以去干其他事情哦。要耐心点

哦……(http://monespaceperso.org/blog-en/2010/05/02/upgrade-alsa-1-0-23-on-ubuntu-lucid-lynx-10-04/)

To do this, we must begin by determining our version of alsa as follows :

cat /proc/asound/version

Advanced Linux Sound Architecture Driver Version 1.0.21.

To avoid problems during the upgrade of Alsa-utils, we need to stop it with the following command :

sudo /sbin/alsa-utils stop

We must then install the necessary tools to compile along with the kernel headers :

sudo apt-get -y install build-essential ncurses-dev gettext xmlto libasound2-dev

sudo apt-get -y install linux-headers-`uname -r` libncursesw5-dev

Then, we go in our personal folder and download alsa-driver, alsa-lib and alsa-utils :

cd ~

rm -rf ~/alsa* ~/.pulse*

wget ftp://ftp.alsa-project.org/pub/driver/alsa-driver-1.0.23.tar.bz2 
wget ftp://ftp.alsa-project.org/pub/lib/alsa-lib-1.0.23.tar.bz2 
wget ftp://ftp.alsa-project.org/pub/utils/alsa-utils-1.0.23.tar.bz2[/code] 
After that, we create a new folder for the compilation and installation of the 3 files. Then, we move the 3 tar files that we just downloaded in this folder :

sudo rm -rf /usr/src/alsa

sudo mkdir -p /usr/src/alsa

cd /usr/src/alsa

sudo cp ~/alsa* .


Unpack the 3 tar files :

sudo tar xjf alsa-driver*

sudo tar xjf alsa-lib*

sudo tar xjf alsa-utils*


We compile and install alsa-driver :

cd alsa-driver*

sudo ./configure

sudo make

sudo make install


We compile and install alsa-lib :

cd ../alsa-lib*

sudo ./configure

sudo make

sudo make install


We compile and install alsa-utils :

cd ../alsa-utils*

sudo ./configure

sudo make

sudo make install


Then, we remove the 3 tar files in our personal folder that are not anymore necessary :

rm -f ~/alsa-driver*

rm -f ~/alsa-lib*

rm -f ~/alsa-utils*


Then, just restart your computer and your alsa version should be 1.0.23!

You can verify that you have now indeed have this version of alsa :

cat /proc/asound/version

Advanced Linux Sound Architecture Driver Version 1.0.23.

Compiled on May 2 2010 for kernel 2.6.32-21-generic (SMP).


Just to be sure everything is well configured, execute this command :

sudo alsaconf


and reboot again!

第二步：配置alsa-base.conf文件

输入以下指令

sudo gedit /etc/modprobe.d/alsa-base.conf

打开alsa-base.conf后在最后一行添上options
snd-hda-intel model=xxxxx 注意等号两边没有空格。
如果没法更改则可能权限不够，输入指令：
cd /etc/modprobe.d/
chmod 777 alsa-base.conf

下面最重要的就是xxxxx的配置。快捷键ctrl+f进入搜索功能，输入ALSA-Configuration.txt查找后打开，然后根据自己的声卡配置，不知道的同学可以在终端下输入alsamixer，card和chip后的名称则分别是声卡和芯片。我的电脑是华硕，改成asus不能用，最后改成lenovo-3000就行了。

如果懒得查找的同学可以把options
snd-hda-intel model=xxxxx更改为以下试试；

options snd-hda-intel model=lenovo-3000

options snd_hda_intel model=lenovo-nb0763

options "snd_hda_intel" model=lenovo-101e

options snd-hda-intel model=acer

options snd-hda-intel model=ideapad

options snd-hda-intel model=auto

options snd-hda-intel model=asus

友情提醒：
在执行第一步(升级声卡驱动)之前，可以先执行第二步（更改配置），然后重启，检查耳机是否有声音。

如果没有声音，执行第一步。

Samsung 电脑配置：

options snd-hda-intel model=samsung-p50

关健是后面的model:xxxxx, 注意改成自己机器对应的.