Second monitor not any more detected

cobo · 11-11-2019, 07:26 AM

I have two new Lenovo T590 notebooks and I connect them through an i-tec Thunderbolt docking station to two old HP LP2465 monitors (resolution 1920x1080). I knew that the Thunderbolt connector is not supporting two 4K monitors, but these old monitors should work.

And they did: one computer with Windows 10 and the other with Ubunti 18.04 - great!

Now I installed a lot of software on both computers for my work - all not connected to the external monitors. And what a bad surprise: the Ubuntu computer recognizes only one monitor - and the mouse pointer flickers horribly.

The flicker went away with the first workaround on this page: https://support.displaylink.com/know...ent-x-upgrades, but still - only one monitor is recognized.

I uninstalled and reinstalled the displaylink driver several times - no effect.

I was using the version from the i-tec website, but I see that it seems to be exactly the same as on this displaylink site: version 5.2.14.

Any further ideas about what I could try?

Because: It HAS WORKED a few days ago, so SOMEHOW it should be possible to get back to this situation!

11-11-2019, 07:26 AM	#1
cobo Junior Member Join Date: Nov 2019 Posts: 2	Second monitor not any more detected I have two new Lenovo T590 notebooks and I connect them through an i-tec Thunderbolt docking station to two old HP LP2465 monitors (resolution 1920x1080). I knew that the Thunderbolt connector is not supporting two 4K monitors, but these old monitors should work. And they did: one computer with Windows 10 and the other with Ubunti 18.04 - great! Now I installed a lot of software on both computers for my work - all not connected to the external monitors. And what a bad surprise: the Ubuntu computer recognizes only one monitor - and the mouse pointer flickers horribly. The flicker went away with the first workaround on this page: https://support.displaylink.com/know...ent-x-upgrades, but still - only one monitor is recognized. I uninstalled and reinstalled the displaylink driver several times - no effect. I was using the version from the i-tec website, but I see that it seems to be exactly the same as on this displaylink site: version 5.2.14. Any further ideas about what I could try? Because: It HAS WORKED a few days ago, so SOMEHOW it should be possible to get back to this situation!