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Eyefinity Ubuntu Lucid

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  • koshcu
    started a topic Eyefinity Ubuntu Lucid

    Eyefinity Ubuntu Lucid

    I am looking at getting a 5870 eyefinity 6 edition card. The drivers in ubuntu lucid (10.04) say they support eyefinity.

    From what I can see these (http://www.amazon.com/gp/product/B00...A3V6BK4D0HKA8F) mini-displayport to vga adapters should work.

    What I want to do is setup a 4x1 eyefinity setup of 1920x1200 monitors for a total of 7680x1200. That is supposed to be a supported resolution option.

    Will this work without xinerama or anything like that? Will stuff like composite work? Right now I have dual 8800 GTS nvidia cards with xinerama and it is pretty slow mostly because of lack of composite. When I tried it with xgl long ago it was very very fast but crashed a lot. Eyefinity is supposed to solve this problem.

    I don't really care if compiz actually works although that would be nice. I mostly want to not use xinerama anymore as a primary feature and allow kde to work across all 4 monitors as one desktop. My secondary feature would for it to be much faster then the current xinerama setup which is not hard to beat. I would love if it supported composite correctly so that desktop effects could be enabled in kde since that also makes it run a heck of a lot faster when I tested that using just two monitors.

    Thanks

  • mugginz
    replied
    Originally posted by SouthFloridaNetworks View Post
    I can tell you from personal experience, you won't be able to do more than 2 non DisplayPort Monitors. The only other way would be with an Active Adapter which is over $100.00 each.
    I'm got an active DP adaptor that only costs AU$49

    Available from PC Case Gear here:
    http://www.pccasegear.com/index.php?...ducts_id=14786



    Works with my Acer AL2416W 24" DVI LCD screen and a ATI 5870.

    Haven't used it much because I'm waiting for 10.7 to enable Eyefinity but when using one DVI screen and another one via display port connected via this adaptor 10.6 auto detects the screen and makes it available for use.

    It would seem the price of these things is finally starting to get realistic.

    Leave a comment:


  • SouthFloridaNetworks
    replied
    Originally posted by Kano View Post
    hdmi is the same as dvi technically - just buy a cheap cable if you need dvi on one side.
    I can tell you from personal experience, you won't be able to do more than 2 non DisplayPort Monitors. The only other way would be with an Active Adapter which is over $100.00 each.

    Leave a comment:


  • koshcu
    replied
    I am definitely looking forward to eyefinity support. Guess I will just keep waiting for now.

    Leave a comment:


  • fluxion
    replied
    thanks fryed_1, i guess that rules out inactive/active adapters and whatnot being at fault. eyefinity support just plain doesnt appear to work for linux yet, which is what i basically suspected...but it's confusing when seeing that functionality suggested in various release notes.

    hopefully it'll happen soon...

    Leave a comment:


  • fryed_1
    replied
    Originally posted by fluxion View Post
    ...I find I need to disable one of the other monitors first. otherwise there is no option to enable the 3rd option in CCC, and via xrandr i will get a crtc error unless i do an xrandr --output <hdmi|dvi> --off first.
    I have this exact problem. I can drive two out of three monitors (doesn't matter which) but when trying to enable the third I get the crtc error.

    Doesn't matter which of the two are enabled (have it setup now as DVI/DVI/DP) so I can enable any two in any combination but not three.

    Originally posted by fluxion View Post

    unfortunately i dont have windows on this machine...has anyone seen anyone get 3 displays going on linux using an adapter for DP? or at all... i havent actually seen anyone test this support linux, even with an active adapter or monitor with native DP
    I'm using 3 Dell P2210H monitors. I have a 4th 22" 16x10 Hannspree with VGI/HDMI I have tried as well. I've tried combinations of DVI/DVI/DP, DVI/VGA/DP, DVI/HDMI/DP, VGA/VGA/DP, VGA/HDMI/DP and whatever else I could think of. All results were the same... two monitors works great and crtc errors when trying to enable the third.

    xrandr shows the third monitor no matter which is it and CCC detects the third monitor, though it's greyed out and I can't do anything to it.

    I remember researching monitors for this setup and though I forget exactly what was said, it was something about video timing was the reason for the DP connection for a third monitor. Active DP provides its own timing if I remember right and the card itself will only provide the timing for two monitors and the third gets it on its own or something like that.

    I know it works great in Windows XP/7 though. About the above paragraph, I think it has to be the drivers that provide whatever that third monitor needs to function. When Windows boots up, the third monitor does NOT work until you install the ATI drivers. Only then does it work. After installation, the third monitor does not turn on until well into the Windows boot process (just before login screen), which if you go to a debugging bootup, you can see is when the display drivers are loaded.

    Leave a comment:


  • fluxion
    replied
    Originally posted by rohcQaH View Post
    just a hunch, but is it possible that that adapter is just a DVI->VGA adapter in disguise?
    Maybe the vendor went the cheap route, trying to re-use existing chips, so they relied on DP's ability to route DVI signals.

    That would certainly explain why you still can't use the third monitor.
    Yah that's a possibility, and i guess it's more plausible than I considered it would be. But this is actually the card I have, and they advertise driving 3 displays, with a footnote stating that 1 display needs to be driven via DP:

    http://www.msi.com/index.php?news_no=904&func=newsdesc

    Another explanation would be that eyefinity support is still lacking, but IIRC it was announced to work in 10.3, right? Can you try if it works better on windows?
    unfortunately i dont have windows on this machine...has anyone seen anyone get 3 displays going on linux using an adapter for DP? or at all... i havent actually seen anyone test this support linux, even with an active adapter or monitor with native DP

    Leave a comment:


  • rohcQaH
    replied
    just a hunch, but is it possible that that adapter is just a DVI->VGA adapter in disguise?
    Maybe the vendor went the cheap route, trying to re-use existing chips, so they relied on DP's ability to route DVI signals.

    That would certainly explain why you still can't use the third monitor.


    Another explanation would be that eyefinity support is still lacking, but IIRC it was announced to work in 10.3, right? Can you try if it works better on windows?

    Leave a comment:


  • koshcu
    replied
    How well does that monster adapter work when you disable the other outputs? I looked on their website and other then the price and a lot of pictures of gold plated parts there are no technical specs I could find of any kind.

    I just wonder if it is actually a very good adapter. Many of the ones that people report good success with say in the tech specs that they pass through EDID information among other things.

    Leave a comment:


  • fluxion
    replied
    Originally posted by bridgman View Post
    In fluxion's case the card might be using the same GPU pins for dvi and hdmi; I haven't looked at the chip pinouts to see what the connector wiring options are.
    in my case though dvi and hdmi work fine at the same time, its just when i try to enable the 3rd monitor, hooked up to displayport via a dp->vga adapter (Monster is the adapter brand...i was impatient and this $50 beast is all they had at Fry's), that I find I need to disable one of the other monitors first. otherwise there is no option to enable the 3rd option in CCC, and via xrandr i will get a crtc error unless i do an xrandr --output <hdmi|dvi> --off first.

    so that seems to suggest they would've had to had wired dp and hdmi together for 2 displays to only be possible, which doesnt seem realistic

    Leave a comment:

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