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  • Posts: 6
  • Registered: ‎06-22-2017
  • Location: US
  • Views: 184
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Pro Dock 90W DisplayPort signal loss despite v2.33.000 firmware update.

2017-06-26, 1:20 AM

I have a T460 Thinkpad on a Lenovo Pro Dock 90w with LG 29UM68-P ultrawide monitor running at 2560x1080.  My docking station was manufactured in December 2016 & I am using the included 90w power adapter.  My monitor has built in speakers (using Intel Display Audio drivers), so my DisplayPort cable is carrying both audio & video.


I have two symptoms of signal loss:  audio cuts out intermittently when playing music (or watching videos w/ sound) & the screen will periodically go dark with a "no signal" message.  The video signal restores itself after about 3-4 seconds.


I have already tried updating the ThinkPad's BIOS to the latest version, updating Intel graphics drivers to latest version, as well as the Pro Dock 90w firmware (to version 2.33.000).  I also swapped out my DisplayPort 1.1 cable for a DisplayPort 1.2 cable.


The monitor+speakers work beautifully when connected to a Dell laptop+docking station, so I know the problem is not with the monitor.


Are there any other tricks I could try?


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