11-22-2018 01:40 AM
At my workplace we are experiencing with ALL our x250's that the internal Realtek Sound Controller cant transfer sound to external devices, only picture.
In Device Manage -> System units, I can see that is detects the external input as "High Definition Audio-controller" but has a little warning triangle with an exclamation mark, and you cant select other speakers under sound (in the processbar) except from the build in speakers.
We have tried using all sorts of externalspeakers incl. mini-jack input, but nothing works.
Model: Lenovo x250
Win: Windows10 1803 build 17134.376
Realtek High Definition Audio (controller) driver vers. 220.127.116.1109 17 Apr 2018 (newest version for 1803)
I really really hope someone in this forum can help with this problem, as it affect alot of colleagues not being able to play sound on our projectors.