Unsolved
6 Posts
0
1731
S2721QS, MacBook Pro, periodic high pitch noise
I recently purchased this display and started noticing that it emits a high pitch noise every 2-3 seconds if it is connected to my MacBook Pro through DisplayPort -> USB C cable. When it is connected from my PC with and HDMI -> HDMI cable there is no noise. Any thoughts what is causing the noise and how to stop that? I tried to factory reset, but it does not help.
Thanks
DELL-Cares
Moderator
Moderator
•
25.2K Posts
0
November 4th, 2020 07:00
We tried reaching you on a private message asking for the S2721QS Service Tag but did not receive a response. Please feel free to reply to the private message whenever you are available.
* Go to the top of this Monitors Forum and read through the sticky, "Dell monitor, Apple FAQ"
* Dell did not ship a USB Type-C to DP cable with this S2721QS. Which 3rd party USB Type-C to DP cable did you purchase?
DELL-Cares
Moderator
Moderator
•
25.2K Posts
0
November 4th, 2020 16:00
Thank you! We have received the required details. We will work towards a resolution. In the meantime, you may also receive assistance or suggestions from the community members.
sonicsurfer
6 Posts
0
November 6th, 2020 09:00
Hi,
Right, Dell did not ship a USB Type C to DisplayPort cable. I purchased this cable:
https://www.amazon.com/gp/product/B075V27G2R/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1
Is that the one causing the issue?
Thanks
sonicsurfer
6 Posts
0
November 9th, 2020 11:00
DELL-Cares
Moderator
Moderator
•
25.2K Posts
0
November 9th, 2020 12:00
Thank you for the update. Do let us know if you tried using the monitor with another system Macbook or otherwise.
DELL-Cares
Moderator
Moderator
•
25.2K Posts
0
November 9th, 2020 14:00
Okay, will you be able to try it on a Windows system?
sonicsurfer
6 Posts
0
November 9th, 2020 14:00
Yes, I managed to reproduce the issue on my 2019 16" MacBook Pro and also on a 2017 13" MacBook Pro.
sonicsurfer
6 Posts
0
November 16th, 2020 11:00
Yes, I tried using a PC running Windows. I used a different Displayport cable, I managed to reproduce the same issue.
DELL-Federico
36 Posts
0
November 16th, 2020 11:00
sonicsurfer,
Thank you so much for getting back to us, would be possible to capture the sound on a video and upload it on a cloud based server like dropbox, google drive, YouTube, sharing a public link with us for further review?
Looking forward to your response,
sonicsurfer
6 Posts
0
November 23rd, 2020 17:00
Sorry, but I decided to return the display. I tested other displays with the same setup (computer, cable) and I did not manage to reproduce the issue with them. I hope you will be able to identify the issue and fix that in future versions.