Ubuntu14.04 has sound on the lower and lower sides, while headphones have no sound. ubuntu14.04 has headphones.

Ubuntu14.04 has sound on the lower and lower sides, while headphones have no sound. ubuntu14.04 has headphones.

There are new discoveries every day when I use linux. I got up this morning and used my computer to listen to a few songs. After I plugged in my headphones, I found that there was no sound. I thought the headset was broken, I inserted the headset on my cell phone and found that the headset had sound. I wondered if I had a problem with the computer interface, but when I got into the system, the headset rang, so it should not be an interface problem. I checked the computer's audio settings and drivers and found that they were all suitable. I restarted the computer and found that it was still not working, what's really cool is that I have integrated my computer and then turned it on again. It's amazing to have a sound, and I don't know why. I just want to figure out what the state of my computer is, turn on the power management and find that the computer lid is suspended. Simply put, the application process is killed when the halt command is suspended and the sync system call is executed, after the file system writes, the kernel is stopped. In this case, the user can directly turn off the power supply. The hard disk is suspended and the current state of the computer is loaded into the memory, that is, the hard disk stops power supply, but the memory still needs power supply. The advantage is that recovery is fast, but the disadvantage is that continuous power supply is required and the power will have to be restarted. Sleep is to save the current state of the system to a sleep file on the hard disk, and then close all the devices. You can safely shut down the power supply and restart it next time, the files stored in the hard disk are automatically called and restored to the state before shutdown. The advantage is that power supply is not required and sleep takes a long time. The disadvantage is that the recovery speed is slow (relative to suspension ). It takes 2 or 3 seconds to resume a suspension. It takes more than 10 seconds to recover from sleep, which is slower than suspension but much faster than restart.

Therefore, I guess it may be a permission issue, or the memory does not load all the data, which leads to this problem. Baidu does not provide a good explanation, this is just my guess. If you have any questions, please kindly advise me.

After the headset is inserted in ubuntu 1404, not only does the headset sound, but the sound continues to sound

Me too... Unplug the file and insert it again.

Ubuntu810 is installed without sound. Why is there sound after wearing headphones?

Maybe the driver is not installed.
I have encountered this problem.
You have a hardware driver in the system to update it.
You can download an installation package from the sound card website.
Ubuntu drivers are easy to install.