1. Sound card driver Sound.c
(1) The entry function registers the file_operations structure with the Register_chrdev () function.
(2) File_operations structure, there is only open function, there is no read and write function, we can see that the open function is the function of the transfer, will definitely find a new file_operations structure
(3) Call procedure
Save the secondary device number of the i
Open integrated Sound Board integrated sound system The default state is generally open. There are two ways to open an integrated sound card.
One is the BIOS setup method. In the case of award type BIOS, it is generally possible to find the "AC ' Audio" option in the "Integrated peripherals" (built-in integration sett
1 The BIOS is not familiar with user misuse of the onboard sound screen.
Enter the BIOS, select I/O Device configuration→onboard AC97 Audio Controller, choose Enanle or Auto. This process is in the author's Asus Motherboard, on other motherboards are basically similar, if it is award bios, into the BIOS in the "intergrated peripherals", and then select "AC97 Audio" Change "Auto" for "Disable" Save you can
In the third step, select the
Updating the sound card driver is a common computer operation, but a lot of friends in the update of the sound card when encountered some problems, and the higher the rate is about the problem of reloading the sound card, the foll
(a) Right-click My Computer----Properties---Hardware----Device Manager, expand Sound, video, and game controllers to see if there is a yellow "?" in front. Number, there is a lack of sound card driver, there is "!" , the sound card driver is not working properly, right-click
1, think the more expensive sound card quality will certainly be good
A variety of sound card price gap is very large, from dozens of yuan to thousands of dollars have. Although "a penny a price," but at the same time is not the price of the more expensive sound
One, the computer has no sound. There is no sound in listening to the music or watching the video, and there are some possible reasons for the computer failure:
1. The output device and interface connection appear abnormal.
It is recommended to replace another headset, if the sound is normal, positioning for the original equipment has problems, it is recommende
Why install sound card UAA bus driver, install this thing still need to install sound card driver? What is the sound card UAA bus driver? Today, Amy asked Adam questions. Because she is still using the Win2000 system, hehe. People
What if the motherboard sound card is broken?
If the sound card does not work, you should first check to see if the sound card is enabled. In particular, the motherboard integrated sound
A, sound card control Panel settings (some of the sound card will have this convenient problem, such as: Realtek, VIA)
Open Audio Manager--click on the right Jack setting-check disable front panel jack detection-click OK.
Second, Device Manager sound
We listen to music on the Win7 computer or watch video, found that the computer does not sound, it may be the sound card driver problems. We can reinstall the sound card driver, but in the process of reloading, prompted the installation failed, what can I do? The following i
Laptop with Conexant HD Audio chip driver installation method under Windows XP
Tip: Realtek sound card in XP if you are also prompted to install a sound card, you can also refer to the following scheme to install a sound card pat
Many users have encountered a silent computer, sound card driver installation repeated failure, and so on, if you are troubled by these problems, hope that after reading this article, can help you find a solution!
Online sound card driver Pack a lot, want to find the right not easy. We can use professional driver mana
Statement: the content of this blog is created at http://blog.csdn.net/droidphone. please refer to it for help. Thank you!Control Interface
The control interface allows the user space application (ALSA-Lib) to access and control multiple switches and sliding controls in the Audio Codec Chip. For mixer (sound mixing), the control interface is particularly important. Starting from ALSA 0.9.x, all mixer operations are implemented through the control in
Article title: the configuration of the old sound card in Linux. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.
There are a lot of articles on sound card configuration in Linux. if
Online sound card driver Pack a lot, want to find the right not easy. We can use professional driver management software to quickly find the right sound card driver installation package. Drive Life 5 Unique recommended drive function, after the software will test your computer's so
If you like to use the Win7 flagship version, then you will face some of the WINDOWS7 internal system update distress, and sometimes in the update Windows7 will find Win7 sound card driver, which requires Win7 sound card drive official download Help. And today for you to bring a Win7 audio drive official download of th
sound card in normal use, the noise is more and more large. There are many reasons for this failure, mainly in the following areas.
1. Sound card anti-interference ability is poor. The work of the sound card, the materials
Realtek sound card installation can be installed through the HD Audio controller to adjust some of the functions, but improper adjustment may cause mic noise, affect the microphone's voice effect. The adjustment scheme in this article is mainly for notebook models with built-in microphones in the standard, taking IdeaPad Y470 as an example.
Please note: before adjusting, please make sure your computer ha
The computer has no sound because of the sound card driver. Generally we can go into My Computer --- right ---Select--- properties -- hardware -- Device Manager the following figure:
Click on the Device Manager to enter the following computer hardware driver view, as shown below.
The sound
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