Second monitor not any more detected

cobo · 11-11-2019, 09:13 AM

Of course I continued trying.

Having also xorg crashes, I googled also for that one. And found hints to update the kernel - but this did not change anything: "you have already the most recent..."

However, before doing it I thought it might be safe to uninstall the displaylink drive again - and then I re-installed it of course. Expecting that nothing can be done at the moment but switching where the monitors are plugged into the thunderbolt dock: so far I had from left to right first one monitor working, then one black, and then the notebook builtin screen, and I wanted to have the working monitor next to the notebook.

But after switching - what a surprise: now both monitors are recognized again!

So one more hint that MIGHT have had an effect: both monitors have a "good old" DVI connection cable, while the dock has for both possible monitors both a HDMI and a Displayport connector. For one of the monitors I already had an old Displayport adapter, and for the other one I bought a HDMI connector.

Before they were plugged in as follows:

monitor 1: Displayport
monitor 2: HDMI

In that case, only the Displayport connected monitor was recognized.

Now I have switched to

monitor 1: HDMI
monitor 2: Displayport

and this seems to be the better option!

Does this make any sense?

Ok, for me the most important thing is that it is WORKING now! ;-)

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11-11-2019, 09:13 AM	#2
cobo Junior Member Join Date: Nov 2019 Posts: 2	Of course I continued trying. Having also xorg crashes, I googled also for that one. And found hints to update the kernel - but this did not change anything: "you have already the most recent..." However, before doing it I thought it might be safe to uninstall the displaylink drive again - and then I re-installed it of course. Expecting that nothing can be done at the moment but switching where the monitors are plugged into the thunderbolt dock: so far I had from left to right first one monitor working, then one black, and then the notebook builtin screen, and I wanted to have the working monitor next to the notebook. But after switching - what a surprise: now both monitors are recognized again! So one more hint that MIGHT have had an effect: both monitors have a "good old" DVI connection cable, while the dock has for both possible monitors both a HDMI and a Displayport connector. For one of the monitors I already had an old Displayport adapter, and for the other one I bought a HDMI connector. Before they were plugged in as follows: monitor 1: Displayport monitor 2: HDMI In that case, only the Displayport connected monitor was recognized. Now I have switched to monitor 1: HDMI monitor 2: Displayport and this seems to be the better option! Does this make any sense? Ok, for me the most important thing is that it is WORKING now! ;-)