Question

8

Any really decent way to get three monitors?

rated 0 times [ 8] [ 0] / answers: 1 / hits: 28600 / 3 Years ago, thu, august 5, 2021, 12:35:29

What satisfactory solutions are there to achieve three monitors on Ubuntu? I know some ATI cards (Eyefinity) can support 3 monitors from a single card, but I don't know how well this is supported under Linux and besides, I've never had much luck with ATI on Linux.

The alternative is to try two cards, but there seem to be problems there too. It looks to me like xrandr cannot support 2 GPUs. I believe you'll end up with two separate "Screens" across which you cannot move applications or windows, unless you enable Xinerama which as I understand it disables some acceleration and probably compositing too.

I've found so much conflicting information on this online, I'm really confused. Please advise!

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answered 3 Years ago izeeas · Accepted Answer

Thanks to Geppetvs for his suggestion, but I have one that is up and running and working very well.

I have a Sapphire HD6770 fleX Edition card.

I believe any of the ATI "Eyefinity" cards would work. Most of them require a DisplayPort monitor to support 3 displays, or a DP->DVI adapter. The Sapphire fleX cards can work with 2xDVI + 1xHDMI (which can be easily converted to DVI - in fact they supply the adapter in the box).

This card supports 3 monitors with the open source "radeon" driver without any need to create or edit an xorg.conf file. Standard xrandr tools work with it. 3D acceleration is active (enough to run glxgears and compositing at least) and no xinerama is needed.

Hope this helps someone!

[P.S. This link was useful https://bbs.archlinux.org/viewtopic.php?id=116502&p=2 ]