Windows 10: Mini Display port not working when connected to monitor

HI, Im using a MSI GT60 2QD notebook with Windows 10 home(1803). When i conneted to LG 34UC98 monitor via Mini Display port, my notebook didn't appear any external monitor selection for my to chooose. I had tried "uninstall and re-install display driver", "changed the other cable", and plug other port. It works fine when i connected to the monitor via HDMI cable (except the resolution cannot change to 3440 x 1400). Macbook pro works very well when conneted to the same monitor via thunderbolt3 to thunderbolt2 adapter.

:)

 

RE : Mini Display Port adaptor to HDMI TV


If you have a second monitor or a second cable run though these troubleshooting steps:
https://support.microsoft.com/en-us/...-second-screen
Maybe something from the list may work with one monitor?
Also check to see if the cable is display port certified:
How to Choose a DisplayPort Cable, and Not Get a Bad One! - DisplayPort

 

mini display ports?

How many monitors are you connecting ? If you will use 3 monitors for eyefinity there were some restrictions until 7*** series ( did not follow 7*** series for eyefinity )
1-There is something called clock source on video cards , AMD cards had clock source for 2 monitors and 3th monitor had to use Display port monitor (display port does not use clock source = you can use more monitor with display port )
2-If you want to use 3 monitors without display port input than you need active adapter for 3th monitor

3-Active adapters have usb connection for power generally http://www.accellcables.com/products/DisplayPort/DisplayPort.htm .Exception is display port to vga adapters ,all of DP to VGA adapters are active and dont have usb cable .

4- AMD/ATI was talking about multi stream transport and MST hubs HIS Radeon HD 6870 1 GB Review .There are some hubs on market but not any MST 1.2 atm ,some1.2 hubs demoed at CES fyi .

5- This was the situation until 7*** series AMD/ATI cards , i saw some 7*** series cards with 3 (or 4 ) reguler monitor output iirc but not looked closely ,i think someone may give better info for this than me btw write exact model of your video card . A bit more research showed these card with more than 2 reguler monitor connections are sapphire FLEX series video cards for 3 monitors atm .

 

SP3 with new brick dock can't connect to two dual external acer monitors via mini display adapter

Have new dock and can't make the display ports connect to the my two external monitors via active mini display dvi adaptors. Work fine when I plug them directly into the SP3, but not the port. Please help. THanks.