08-25-2019 09:51 AM - edited 08-25-2019 09:52 AM
For those of you who have found a connection between the audio crackling and your wifi card, this is a great solution:
Credit to pseudofate who posted this solution for the Y520 model - it worked like a charm on my new Y540.
Hope this helps,
08-25-2019 08:59 PM
Unfortunately the transmit power workaround does not seem to work for me. It may have made the issue less frequent; it is hard to say. But I definitely still have a cracklng noise sometimes even using the 3 - Mid option. As a sidenote, does anyone know if reducing the tranmist power has a negative effect on wifi performance or anything like that?
08-26-2019 05:23 AM
dissapointed111 - the difference isn't significant enough to be noticeable, so I wouldn't be concerned.
Other models I believe ship with the default set lower out of the box. I certainly haven't run into any troubles streaming etc.
08-28-2019 02:06 AM
I have a brand new Legion Y540-17IHR, i7 9750H, BIOS BHCN29WW, Win10 build 1903 with audio crackling problem.
One strange thing I noticed is that the USB2 and USB3 speed is only about 60%
of what it should be. The weird thing is that if the computer processor is loaded
heavily, eg with a benchmark program or other software that requires a lot of
processor power, the USB speed goes up to normal values and the crackling sound disappears.
It may be a USB or data bus problem and not directly related to the sound card.
Lenovo support failed to solve the problem despite 1 hour try via remote desktop.
I think I have to return the computer unless a quick fix can be found.