Mint 17.2 doesn't see additional monitor

[Michal22]

Hi,

I bought Toshiba dynadock 3.0 and I have a problem on my toshiba satellite s55t-b5233 laptop. I need to connect via this dynadock monitor. I did everything from this article and only usb devices can work. When I am going to "Display" I can see only laptop monitor. I tried dvi and hdmi. I checked it on windows 10 and evrything is ok.

I would be grateful for your advice,
Michal