On my brand new Inspiron 15 7559, I've noticed that there is a static "hissing" noise coming from the speakers whenever I do something that involves audio (playing a movie/game/etc).
The hissing noise is especially noticeable when I mute the volume in Windows.
As soon as I close the video/browser/game that the audio is coming from, the hissing stops as well.
The noise also stops when I plug in a pair of headphones.
I've tried the latest audio drivers, as well as the generic Windows audio drivers and the Realtek HD Audio drivers from Realtek's site, and the hissing noise happens with all of them. I have also updated my BIOS to the latest version
Has anyone else encountered this? I'm beginning to think it might be a hardware problem and I'm leaning towards returning the laptop.
Hello. I don't recall seeing other posts about this same issue with the 7559, although there have been plenty of complaints about a pop noise with it which seems to be related to power management. See the Choppy/Skipping Audio FAQ for tips on that problem, but your symptoms are not of that issue.
If you don't hear the static through headphones then it would seem to be a speaker issue. I think you are on the right track in leaning toward sending it back.
Update: I got a replacement unit and it has the same issue.
Right now as a workaround, I'm disabling "Realtek High Definition Audio" in the Device Manager when I need to mute the speakers as that will prevent any noise from coming out...
Very weird though, it is very faint (I either have to be in a very quiet room to hear it or have my ear right against the speakers) and I'm wondering how many people have this issue and just haven't noticed it.
The issue appears to be identical to those described in these threads:
I have a similar problem as well. Really faint and static noise comes from the speakers, but in my case it is not related to any media playing, rather it starts as the laptop is being booted. Re-installing audio drivers fixes the issue for a very little while. I have stopped caring about it nowadays (mostly since it is hard to hear unless a very quiet place) but it feels like the problem isn't consistent, sometimes there is simply no noise.
I have the same model and it has a similar behaviour.
With Dell personalized Realtek drivers, the static sound appears when audio is playing. When you close the tab of youtube for example and audio gone, static sound gone. But if you stop audio without closing the tab, static sound lasts for 10 seconds (this is because audio chip power saving, the chip shut down in 10 seconds with no audio).
With native audio driver from Windows 10, there is no power management and the static sound is always there (with and without audio).
When you reinstall the Dell driver and you uninstall it, before rebooting there is no static sound, with and without audio.
Then it's a driver issue.
Yeah, mine makes the sound when booting as well (when the Dell logo is showing), in addition to what I previously described.
How did you get Windows to install the Windows native audio drivers? I've tried installing generic Realtek drivers (from the Realtek site) and it still makes the sound.
How did you get Windows to install the Windows native audio drivers?
Hello. The two ways that I know of to install the native driver are:
Find the Realtek driver in Device Manager and right click on it. Select to uninstall the driver. Put a check in the option to remove the driver software for the device. Reboot, and Windows will install the native driver when unable to find the Realtek files. However if there was an additional (older) version of Realtek on the hard drive then Windows will install that one, so the process might have to be repeated.
The other method is to follow these steps:
1. Open the Device Manager (find it in the Control Panel, or type devmgmt.msc into the search box).
2. Expand the "Sound, video & game controllers" and right click on "Realtek High Definition Audio".
3. Select to "Update Driver Software".
4. Click on "Browse my computer for driver software".
5. Click "Let me pick from a list of drivers on my computer".
6. Put a check in the box "Show compatible hardware" if not already checked.
7. In the list of devices, click "High Definition Audio" (the native driver).
8. Click "Next".
9. On the Update Driver Warning box, click "Yes" (install the driver).
10. Restart the laptop if prompted. If not prompted, then no need to restart.
[To get back to the Realtek driver, do it again but reverse the names in steps 2 and 7.]