［转贴］解决笔记本内置扬声器无声的方法

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According to Wikipedia, Alsa is a Linux kernel component intended to replace the original Open Sound System (OSS) for providing device drivers for sound cards.

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原帖：http://monespaceperso.org/blog-en/2009/12/17/upgrade-alsa-1-0-22-on-ubuntu-karmic-koala-9-10/
中文翻译版：http://wiki.ubuntu.org.cn/Conexant%E5%A3%B0%E5%8D%A1%E5%9C%A8Ubuntu_9.10%E4%B8%8B%E6%97%A0%E5%A3%B0%E9%9F%B3%E7%9A%84%E8%A7%A3%E5%86%B3%E6%96%B9%E6%A1%88

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Installation :

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

cat /proc/asound/version
Advanced Linux Sound Architecture Driver Version 1.0.20.

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

sudo /etc/init.d/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-1.0.22.1.tar.bz2
wget ftp://ftp.alsa-project.org/pub/lib/alsa-lib-1.0.22.tar.bz2
wget ftp://ftp.alsa-project.org/pub/utils/alsa-utils-1.0.22.tar.bz2

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

If like me, you got this error during the last “sudo ./configure” :

checking form.h presence... yes
checking for form.h... yes
checking for new_panel in -lpanelw... no
configure: error: panelw library not found

You will need to add those symbolics links (only if you got the error) and restart the installation from the last “sudo ./configure” :

sudo ln -s libpanelw.so.5 /usr/lib/libpanelw.so
sudo ln -s libformw.so.5 /usr/lib/libformw.so
sudo ln -s libmenuw.so.5 /usr/lib/libmenuw.so
sudo ln -s libncursesw.so.5 /lib/libncursesw.so

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 1.0.22.1!

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

cat /proc/asound/version
Advanced Linux Sound Architecture Driver Version 1.0.22.1.
Compiled on Dec 29 2009 for kernel 2.6.31-16-generic (SMP).

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

sudo alsaconf

and reboot again!
Share and Enjoy

引用:

编译软件：
http://wiki.ubuntu.org.cn/UbuntuHelp:CompilingSoftware/zh
Ubuntu Wiki:
http://wiki.ubuntu.org.cn/%E9%A6%96%E9%A1%B5