Permanent speaker noise?

Whether Arch or Debian - the speakers rushing when a DE such as KDE or GNOME started. In pure Weston or in the CLI everything remains silent. Even if I turn off the sound, the speakers continue to rush.

With the PC, I can switch off the speakers so easy, but the laptop is already more difficult. Can you do something there? Best of course disable the noise…

By the way, if I switch to suspend mode and then back again, the noise is gone until some sound is played back. Then it's back.

I need more information about computers and the speakers.

Are they active PC speakers connected to the PC's line out?
Describe the connection cable.
How are these speakers connected to the 230 V mains voltage?

What do you mean by that?

With the PC, I can switch off the speakers so easy, but the laptop is already more difficult

The noise seems to be a high-frequency noise that arises in the PC as soon as the corresponding hardware is activated. If you describe your installation exactly, I can tell you, where you can insert a suitable filter, so that the noise disappears again.

It's a laptop, so built-in speakers. The sound is that typical noise you hear when you turn on the speakers. With the PC you can just turn off the speakers, but that bothers me with the laptop. That's why I'm looking for a solution in which the speakers are only active when they are really needed.

Do the speakers in the notebook also sound without a signal or with the controller set to zero in the taskbar?

Does the noise disappear when you click the speaker icon in the system tray and then, when the slider appears, disable the sound by clicking on the speaker icon?

When mute, the noise turns into a more tolerable noise. That's something. But disabled, I do not get it. The noise comes only with a DE, but not in the CLI.

Let me guess: With the desktop environment PulseAudio will be started or otherwise configured (ALSA, the actual audio interface on the Pulse touches, it should always be active, but since the problem is not continuous, I do not assume that it comes from here ).

Download PavuControl and check if the line-in and the mic-in are mute on the output side.

Otherwise, try recording it with Audacity (recording from "Monitor of Analog Stereo").

I once downloaded, but even if I mute all input and output devices, the noise remains. I only get it away when I switch the output to HDMI (nothing is connected). That seems to be the best solution.

Ideally, I would, but if the speakers were virtually turned off and then turn on automatically when a sound should sound, then turn off again automatically. That's probably not possible, right?

It is just this standard noise, which is always heard when the speaker is on - so no loud noise.

I'm still looking for a solution, but I still want to tell you how else I solve problems with improperly functioning internal sound chips.

If nothing works, I end up with an external USB sound adapter, which is already available for less than 3 euro. They are good sounding, quite usable and fully equipped sound cards, which I also thoroughly tested once. I was really surprised, because they were superior to the built-in sound cards in an ASUS and Fujitsu-Siemens notebook.

An example:

https://www.ebay.de/...1730359296" class="text-primary">https://www.ebay.de/...1730359296

This part is very well equipped because it also has digital inputs and outputs:

https://www.ebay.de/itm/111730359296

Add two good-sounding active computer speakers and the sound is much better than what you're used to.

The noise seems to be a high-frequency interference,

that can't be it at all, because the noise you hear is low-frequency.

Noise is predominantly in the front amplifier stages and we appear more and more in the back.
If you want to adjust something, the gain in the laptop / PC to maximum, the active speakers then down with the gain.

Noise is a mixture of "all" frequencies, a filter can weaken the frequencies with the highest amplitudes, but they are missing in the useful signal.

I only get it away when I switch the output to HDMI

Does not have much to do with the hardware.

It is just this standard noise, which is always heard when the speaker is on - so no loud noise.

The "speaker-to-noise" is always present as soon as the amplifier of the speakers has power.

Sounds like a bug.

I'm talking about high-frequency interference radiation that is present in a PC, e.g. Can arise through switching operations in power supplies or of course in digital data processing. This high-frequency radiation is demodulated by the built-in semiconductors and it may well create mixed products that are in the audible range and very like to make noise as noticeable.

The noise you mentioned has nothing to do with what I'm talking about. Otherwise, I'm pleased that there are also answers donors who are familiar with the matter, otherwise I really need no instruction, because I still remember well where I have held seminars on such topics.

And when I mean filters, there must not be any low-pass filters that are in the audible range, but act at the point where the actual spurious radiation occurs, and then, e.g. Acting on the supply voltage… The filters inserted at this point and should make the supply voltage clean, of course, do not affect the audio signal.

In addition, I'm grateful for parasitic potential equalization currents, which can arise on the ground lines, which I usually eliminate by galvanic separations… In the case of the questioner, I'm still in the process of collecting facts in order to be able to respond specifically.