frustrated thicko w...
 

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[Closed] frustrated thicko with monitor cable question

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My google-fu is weak

My docking station has a display port output.  My monitor has DVI and HDMI inputs (but no display port)

My assumption that a display port to hdmi, or display port to DVI cable would make it all work seems to be flawed - tried both, neither works.  HDMI out from the laptop works, but seems to defeat the purpose of the docking station!

Is my dock broken, have I got the wrong sort of cable, or have I missed a setting somewhere?

Lenovo Onelink+ dock, Benq GL2460, Thinkpad 13 / Win 10 if any of that is important


 
Posted : 27/09/2018 12:37 pm
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checking out via the screen options in win 10?

Docking software up to date?


 
Posted : 27/09/2018 12:41 pm
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Most likely the dock.

How do you connect to the doc - by USB ?  There may be a driver issue (i.e. not installed)   A DVI to HDM should work (that's what my some uses, a mix of HDMI to HDMI, DVI to HDMI etc as he has 3 monitors, so uses most of the outputs on his graphics card.


 
Posted : 27/09/2018 12:44 pm
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You have 'toggled' the screen output ?

Check display settings too - use duplicate first to check the lot is working


 
Posted : 27/09/2018 12:45 pm
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you lot are quick, thanks

Dock has it's own special connector (a onelink port according to lenovo).  Dock driver and windows up to date.

Attempting to duplicate output gives a 'no display detected' message.


 
Posted : 27/09/2018 1:01 pm
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I think thattthr cables only work one way, DP monitor, DVI dock. May be wrong, can't remember which way it is.


 
Posted : 27/09/2018 1:38 pm
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I think thattthr cables only work one way, DP monitor, DVI dock. May be wrong, can’t remember which way it is.

Going from a DP port on the laptop to a HDMI monitor should work, it's going from HDMI to not-HDMI that can be tricksy.

How do you connect to the doc – by USB ?  There may be a driver issue (i.e. not installed)

The OneLink uses a proprietary connector I believe.  If you're connecting it via USB, that's why it doesn't work.  You need a driver also.

Driver and setup guide here:

https://support.lenovo.com/us/en/solutions/ACC100252

EDIT: sorry, I missed the reply where you've said this is all fine.  Hmm.  Get on to Lenovo support maybe?  It could just be broken?


 
Posted : 27/09/2018 2:00 pm
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have you powered the dock?

do any ports in the dock work (usb)?


 
Posted : 27/09/2018 4:11 pm
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Eg some lenovo docks have a bigger psu than the normal laptop one to power more stuff


 
Posted : 27/09/2018 4:12 pm
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Further thanks to all.

Since writing I have double checked firmware and drivers - Cougar's link was where I think I did this when I first set up the dock, and both said 'you are already up to date'

Power - good point DaveP.  90W supply (came with dock), vs 40W on the laptop - swapped and got an error message about low power.  USB and network all behaving as expected, just the display ports (two of them: neither works).

I did have a DP-HDMI, and swapped if for DP-DVI (thinking it was the cable).  Same symptoms (display not detected).  The dock has only DP outs.  Monitor works with HDMI-HDMI.  I don't have another DP source to test with unfortunately.

It's not one of those directional cable things is it?  I thought that was just for HiFi buffs?

Lenovo forum suggests drivers, but I think I've addressed that.  Have logged a ticket.


 
Posted : 27/09/2018 5:52 pm

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