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XXXXXXXXXIII
Paper Tape
Posts: 3
Registered: ‎09-22-2016
Location: CA
Views: 599
Message 1 of 4

T450s Pro dock external monitor issue

I know this is a common problem, but so far I did not find a solution to it. 

 

The external monitors connected to my prodock via VGA and DVI blacks out every few seconds, especially during heavy usage. At first, I thought it was a power supply issue so I bought a 90W supply. Now the monitors stays on most of the time, but still blacks out every 10 minutes or so, even during standby with minimal power usage.

 

Then I tried editing the integrated graphics settings, updating/rolling back graphics driver, flashing the docking station firmware with every version I can find, and switching to ubuntu on the other drive, but there wasn't a single combination of settings which would keep the external monitor on for more than an hour without blacking out/disconnecting. 

 

So what should I do now? 

 

System info:

i7 5600u, 12G RAM, 16G + 128G ssd, 500G hdd, NO 940M, FHD IPS nontouch screen, Windows 10/Ubuntu 16.04

Thinkpad Prodock 04A1, 45W/90W power supply. All USB and audio ports works perfectly. 

Both monitors are 1440x900 at 60Hz, works flawlessly when attached to laptop VGA port. 

XXXXXXXXXIII
Paper Tape
Posts: 3
Registered: ‎09-22-2016
Location: CA
Views: 556
Message 2 of 4

Re: T450s Pro dock external monitor issue

Bump... Anyone? Please help
dizzbuster
Punch Card
Posts: 65
Registered: ‎03-06-2014
Location: US
Views: 537
Message 3 of 4

Re: T450s Pro dock external monitor issue

Try upgrading the firmware for the dock.

 

https://support.lenovo.com/us/en/documents/pd014572

 

XXXXXXXXXIII
Paper Tape
Posts: 3
Registered: ‎09-22-2016
Location: CA
Views: 485
Message 4 of 4

Re: T450s Pro dock external monitor issue

Wish that could have worked, but nope... and it somehow got worse after updates. 

 

 

If anyone have a working set of 04A1 dock and external monitor can you please tell me the firmware version as well as the graphics card version please? 

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