Solution for Ubuntu notebook without sound

A friend's computer is Acer, and the machine configuration is very high. Under my guidance, he asked me to install UbuntuFeisty for him. After the video card driver is installed, you can experience a 3D effect. The effect is dazzling! The only unpleasant thing is that there is no sound. 1. The analysis may be a problem with the sound card driver. I downloaded the Sound Card Driver from the official Realtek website. A very unexpected result occurred, and the system crashed. No way. Let's talk about the system. 2. An expert on the Forum said that his Asus Notebook had a sound after Alsa was upgraded. So a friend's computer is Acer, and the machine configuration is very high. Under my guidance, he asked me to install Ubuntu Feisty for him. After the video card driver is installed, you can experience a 3D effect. The effect is dazzling! The only unpleasant thing is that there is no sound.

1. The analysis may be a problem with the sound card driver. I downloaded the Sound Card Driver from the official Realtek website. A very unexpected result occurred, and the system crashed. No way. Let's talk about the system.

2. An expert on the Forum said that his Asus Notebook had a sound after Alsa was upgraded. As a result, I downloaded the driver package and did not complete the compilation on the machine. After the restart, the sound did not arrive as scheduled.

3. Some people say that upgrading to the kernel version can solve the problem. Therefore, the kernel is upgraded. After restarting, we found that the new kernel does not work. Instead, we had to use the original kernel and delete the new kernel.

4. Turn on "volume control" and raise several voices. A miracle occurred!

It turns out that such a simple thing is so complicated. Learn the lesson, remember!