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I want to use my external monitor's resolution fully (2560x1440) with a USB display adapter for my laptop. I have one with Windows drivers, are there any adapter with linux / Ubuntu drivers that can give me full resolution?

I am thinking of something like my current USB to DisplayPort adapter.

HDMI only gives 1920x1200 (am using arandr to achieve this easily), and my laptop haven't got displayport. But I know that the graphic card can deliver 2560x1440 digitally or through an USB adapter.

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The question is a year old, but the topic may still be of interest (March 2014): Official support from DisplayLink (one of the chipset manufacturers) is still disappointing (to say the least, see ).<br> Still the posting below from one device manufacturer summarizes current progress and deficiencies of the open source hackers' efforts.… HTH – user261906 Mar 25 '14 at 12:43
Ubuntu 14.04 supports it. – Dishank Jul 27 '14 at 4:29
@ThomasLindvig Can you get 2560x1440 now with 14.04? – Andrew MacFie Jun 26 '15 at 17:46
related – Tim Abell May 10 at 15:45

Right now, on Ubuntu 14.04, my Accell DisplayLink compatible adapter just works. It didn't work on 13.10.

Specs of this adapter:

It seems a little slow on effects, I think that is because of being USB 2, and no acceleration? Anyway I got rid of the effects and works ok

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