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I am running Ubuntu 12.10 and am trying to set up a multi monitor display.
By default the two monitors that are hooked up to the on board graphics card work great, but the one hooked up to the add on card is blank.
All of the results I can find either do not apply to my situation, or are much older (pre Unity, using xorg files that I either do not have, or cannot find anymore)
Is there anything I can do to get this third monitor to work? I am not tied to Ubuntu, is there another distro that is known to work with a setup like this out of the box?
If I understand you correctly you are trying to use two graphic cards? On onboard one and one in a pci-e or agp slot? If so I doubt very much you can do that. Your computer (Hardware side of it,) will only let you use one or the other. However if you have two, for example, pci-e slots for graphics cards then you can tie them in together with a set up, for example, two nvidia cards with sli. But the pci-e slots need to be pci-e 16X. On onboard intergrated card and one in your graphics card slot will not work at the same time.
If I understand you correctly you are trying to use two graphic cards? On onboard one and one in a pci-e or agp slot? If so I doubt very much you can do that. Your computer (Hardware side of it,) will only let you use one or the other. However if you have two, for example, pci-e slots for graphics cards then you can tie them in together with a set up, for example, two nvidia cards with sli. But the pci-e slots need to be pci-e 16X. On onboard intergrated card and one in your graphics card slot will not work at the same time.
It works quite nicely on Windows 7 (which was the OS previously being used on this machine before I took it over), which means it is likely not a hardware limitation. I would much rather use Linux on this machine though, so I am looking for a solution to keep the same monitor setup. It is not my hardware so I am not able to make any modifcations/additions to that aspect.
If it has worked before then great. I always thought the onboard one and the slot ones never worked together. Mine doesn't sadly and they are both Nvidia.
If it has worked before then great. I always thought the onboard one and the slot ones never worked together. Mine doesn't sadly and they are both Nvidia.
I do not pretend to know anything about this subject other than it works great when I boot into Windows 7 but only uses the two monitors from the add on when I boot Linux.
All of the results I can find either do not apply to my situation, or are much older (pre Unity, using xorg files that I either do not have, or cannot find anymore)
You do realize you can create an xorg.conf file, right? Try starting with the ones you found on-line, and modifying them for your needs. If you still have problems, show us the xorg.conf file you ended up with and the Xorg log file.
You do realize you can create an xorg.conf file, right? Try starting with the ones you found on-line, and modifying them for your needs. If you still have problems, show us the xorg.conf file you ended up with and the Xorg log file.
Adam
While I appreciate recommendations, this sounds like a recipe for disaster. If this were a laptop with set hardware, I might find a xorg file on the net with similar hardware / setup and use it as a basis, but if I knew enough about xorg.conf files to make the major changes that would be nessisary with any xorg file I found on the net, I would probably not need to grab one from the net.
Is there a command in Ubuntu that will make xorg generate an xorg.conf file based on the current settings so I have a sane base to start from?
However if you have two, for example, pci-e slots for graphics cards then you can tie them in together with a set up, for example, two nvidia cards with sli. But the pci-e slots need to be pci-e 16X.
Just for the correction. If you want to run multiple monitors you can do that with a dual graphics solution, but if you activate SLI (Nvidia) or CrossfireX (AMD) you will limit yourself to one monitor. Also, you don't need PCIe x16 for this, in fact, most consumer mainboards only have two x8 slots if you activate SLI/CrossfireX.
Just for the correction. If you want to run multiple monitors you can do that with a dual graphics solution, but if you activate SLI (Nvidia) or CrossfireX (AMD) you will limit yourself to one monitor. Also, you don't need PCIe x16 for this, in fact, most consumer mainboards only have two x8 slots if you activate SLI/CrossfireX.
I stand corrected. Thank you for clarifying that. Just when I thought I knew everything to ;-)
X is one display...
X can only start once for normal graphic cards...
Linux should start all your hardware as long as its supported and included...
If you have two cards each with video out, you should be able to start xord.0 and xorg.1 as two seperate displays under the same operating system.
I think all you need is to configure Xorg.conf correctly and have it open two seperate displays and two seperate screens xorg0 and xorg1.
I am no expert on this and I have not tried it. Anyone correct me if I am wrong.
Actually I found and reopened this thread because I am interested in something similar. I want two motherboards to start with the Linux kernel and for GNU to be able to use the resources of both in an efficient way.
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