Graphics Adaptors for Dual Headed on Ubuntu
in [UK Linux]
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From: John Taylor on 8 Nov 2007 03:35 I have a dual headed machine currently running Win2k. I want to move it to Ubuntu, still dual headed. It currently has an ATI radeon 7000. As far as I can tell this is too old for ATI linux drivers to give dual screen support. Does anyone else have a dual screen setup working ? Is it best to use two adaptors, or can I get a single card that will run two screens ? Thanks JohnT
From: Chris on 8 Nov 2007 04:29 John Taylor wrote: > > I have a dual headed machine currently running Win2k. > > I want to move it to Ubuntu, still dual headed. > > It currently has an ATI radeon 7000. > As far as I can tell this is too old for ATI linux drivers to give dual > screen support. > > Does anyone else have a dual screen setup working ? > > Is it best to use two adaptors, or can I get a single card that will run > two screens ? > It depends, you can do it either way. AFAICT (with nVidia at least) to be able to get dual head working with one card (two ports) you must use the proprietary nvidia driver. I have this set-up working well at the moment with a GeForce 6600 You can always use Xinerama which is built-in to X.org, but I think it only works with two cards.
From: Tony Houghton on 8 Nov 2007 08:35 In YSzYi.19405$6v.16115(a)newsfe2-gui.ntli.net John Taylor <john(a)example.com> wrote: > I have a dual headed machine currently running Win2k. > > I want to move it to Ubuntu, still dual headed. > > It currently has an ATI radeon 7000. > As far as I can tell this is too old for ATI linux drivers to give > dual screen support. > > Does anyone else have a dual screen setup working ? > > Is it best to use two adaptors, or can I get a single card that will > run two screens ? When you say ATI driver do you mean the proprietary one? It doesn't support Xinerama anyway, only a single framebuffer across both heads or a separate X screen on each monitor. The free driver does support Xinerama. It should work with a 9x00 card (IIRC I've used Xinerama with a 9600XT as well as a 9000) in case it doesn't work with the 7000. -- TH * http://www.realh.co.uk
From: Simon J. Rowe on 8 Nov 2007 10:04 John Taylor wrote: > Does anyone else have a dual screen setup working ? > > Is it best to use two adaptors, or can I get a single card that will run > two screens ? I've a projector server set up with an nvidia Quatro card which has twin DVI outputs. I use the closed source driver and I configured it by hand.
From: John Taylor on 8 Nov 2007 13:09
Tony Houghton wrote: > In YSzYi.19405$6v.16115(a)newsfe2-gui.ntli.net > John Taylor <john(a)example.com> wrote: > >> I have a dual headed machine currently running Win2k. >> >> I want to move it to Ubuntu, still dual headed. >> >> It currently has an ATI radeon 7000. >> As far as I can tell this is too old for ATI linux drivers to give >> dual screen support. >> >> Does anyone else have a dual screen setup working ? >> >> Is it best to use two adaptors, or can I get a single card that will >> run two screens ? > > When you say ATI driver do you mean the proprietary one? Whichever works best. > It doesn't > support Xinerama anyway, only a single framebuffer across both heads or > a separate X screen on each monitor. Do you mean that it shows the same on both screens, or a single 'screen' stretching over both ? If it stretches over both, how does this differ from Xinerama ? The free driver does support > Xinerama. It should work with a 9x00 card (IIRC I've used Xinerama with > a 9600XT as well as a 9000) in case it doesn't work with the 7000. Looks like I'll need to upgrade my adaptor regardless, although the prospects of finding another AGP card don't look good :-( Regards JohnT |