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-   -   basemosaic linux (http://www.nvnews.net/vbulletin/showthread.php?t=173945)

shock32638 02-12-12 08:28 PM

basemosaic linux
 
I've been attempting to get basemosaic to work on my system, I currently run 6 monitors off of 3 identical 9500GT cards.
I modified my xorg.conf to use this line.
Code:

Option        "BaseMosaic" "True"
Option        "MetaModes" "GPU-0.DFP-0: 1680x1050+0+0, GPU-0.DFP-1: 1680x1050+0+1050, GPU-1.DFP-0: 1680x1050+1680+1050, GPU-1.DFP-1: 1680x1050+1680+0, GPU-3.DPF-0: 1680
x1050+3360+0, GPU-3.DPF-1: 1680x1050+3360+1050"

This sortof worked, my first 4 monitors (off of GPU-0 and GPU-1) worked, however monitors 4-5 stayed blank.

I got this in my log
Code:

[    20.350] (WW) NVIDIA(0): Invalid display device in Mode Description
[    20.350] (WW) NVIDIA(0):    "GPU-3.DFP-0:1680x1050+3360+0"
[    20.350] (WW) NVIDIA(0): Invalid display device in Mode Description
[    20.350] (WW) NVIDIA(0):    "GPU-3.DFP-1:1680x1050+3360+1050"
[    20.350] (WW) NVIDIA(0): Not using mode description "GPU-3.DFP-0:1680x1050+3360+0";
[    20.350] (WW) NVIDIA(0):    unable to map to display device
[    20.350] (WW) NVIDIA(0): Not using mode description "GPU-3.DFP-1:1680x1050+3360+1050";
[    20.350] (WW) NVIDIA(0):    unable to map to display device
[    20.351] (II) NVIDIA(0): Validated modes:
[    20.351] (II) NVIDIA(0):   
[    20.351] (II) NVIDIA(0):    "GPU-0.DFP-0:1680x1050+0+0,GPU-0.DFP-1:1680x1050+0+1050,GPU-1.DFP-0:1680x1050+1680+1050,GPU-1.DFP-1:1680x1050+1680+0,GPU-3.DFP-0:1680x1050+3360+0,GPU-3.DFP-1:1680x1050+3360+1050"
[    20.351] (II) NVIDIA(0): Virtual screen size determined to be 3360 x 2100


It is recognizing the gpu3 existing and even correctly detecting my monitors (not in the snippit above) , but then says it can't use it in basemosaic.

Is this a limitation of basemosaic? only 2 GPU's? or is this a limitation of the fact that the 3 cards I have are not a valid SLI configuration (they're only single SLI, thus I can't SLI them together) or something else entirely. I was unable to find any significant documentation outside of the readme, which seemed rather terse.

Any help would be appreciated.

Plagman 02-12-12 11:14 PM

Re: basemosaic linux
 
The README does state that BaseMosaic isn't supported on GeForce, IIRC.

Plagman 02-12-12 11:19 PM

Re: basemosaic linux
 
Also, the display devices for GPU-3 are typo'ed as "DPF" rather than "DFP" in your first line. Is there any reason your third 9500GT would be GPU-3 rather than GPU-2?

shock32638 02-13-12 10:22 PM

Re: basemosaic linux
 
Stupid mistake on my part (the DPF vs DFP). it does not make any difference, it still only lights up my first 4 monitors.

I wasn't sure how to interpret this line from the Readme.
"It is also supported on Quadro FX 380, Quadro FX 580 and all G80 or higher non-mobile NVS cards."
If it meant all G80/higher except "mobile NVS cards"
or if it meant all G80/higher NVS cards except the mobile ones.

I was using GPU-3 because my system kept making the NForce 980a/780a GPU-2, and the third card GPU-3.

I've disabled the Onboard video (to make things cleaner) and fixed the DPF/DFP error, however i'm still not getting any video to the last 2 monitors

Code:

    Option        "MetaModes" "GPU-0.DFP-0: 1680x1050+0+0, GPU-0.DFP-1: 1680x1050+0+1050, GPU-1.DFP-0: 1680x1050+1680+1050, GPU-1.DFP-1: 1680x1050+1680+0, GPU-2.DFP-0: 1680x1050+3360+0, GPU-2.DFP-1: 1680x1050+3360+1050"
Are there any other hints as to what's going on here?
Code:

[    23.042] (WW) NVIDIA(0): Invalid display device in Mode Description
[    23.042] (WW) NVIDIA(0):    "GPU-2.DFP-0:1680x1050+3360+0"
[    23.042] (WW) NVIDIA(0): Invalid display device in Mode Description
[    23.042] (WW) NVIDIA(0):    "GPU-2.DFP-1:1680x1050+3360+1050"
[    23.042] (WW) NVIDIA(0): Not using mode description "GPU-2.DFP-0:1680x1050+3360+0";
[    23.042] (WW) NVIDIA(0):    unable to map to display device
[    23.042] (WW) NVIDIA(0): Not using mode description "GPU-2.DFP-1:1680x1050+3360+1050";
[    23.042] (WW) NVIDIA(0):    unable to map to display device
[    23.043] (II) NVIDIA(0): Validated modes:
[    23.043] (II) NVIDIA(0):   
[    23.043] (II) NVIDIA(0):    "GPU-0.DFP-0:1680x1050+0+0,GPU-0.DFP-1:1680x1050+0+1050,GPU-1.DFP-0:1680x1050+1680+1050,GPU-1.DFP-1:1680x1050+1680+0,GPU-2.DFP-0:1680x1050+3360+0,GPU-2.DFP-1:1680x1050+3360+1050"
[    23.043] (II) NVIDIA(0): Virtual screen size determined to be 3360 x 2100
[    23.078] (--) NVIDIA(0): DPI set to (90, 88); computed from "UseEdidDpi" X config
[    23.078] (--) NVIDIA(0):    option
[    23.078] (--) Depth 24 pixmap format is 32 bpp
[    23.239] (II) NVIDIA(GPU-2): Display (Acer X223W (DFP-0)) does not support NVIDIA 3D Vision
[    23.239] (II) NVIDIA(GPU-2):    stereo.
[    23.318] (II) NVIDIA(GPU-2): Display (Acer X223W (DFP-1)) does not support NVIDIA 3D Vision
[    23.318] (II) NVIDIA(GPU-2):    stereo.
[    23.320] (II) NVIDIA(GPU-2): NVIDIA GPU GeForce 9500 GT (G96) at PCI:6:0:0 (GPU-2)
[    23.320] (--) NVIDIA(GPU-2): Memory: 524288 kBytes
[    23.320] (--) NVIDIA(GPU-2): VideoBIOS: 62.94.2c.00.91
[    23.320] (II) NVIDIA(GPU-2): Detected PCI Express Link width: 8X
[    23.320] (--) NVIDIA(GPU-2): Interlaced video modes are supported on this GPU
[    23.320] (--) NVIDIA(GPU-2): Connected display device(s) on GeForce 9500 GT at PCI:6:0:0
[    23.320] (--) NVIDIA(GPU-2):    Acer X223W (DFP-0)
[    23.320] (--) NVIDIA(GPU-2):    Acer X223W (DFP-1)
[    23.320] (--) NVIDIA(GPU-2): Acer X223W (DFP-0): 330.0 MHz maximum pixel clock
[    23.320] (--) NVIDIA(GPU-2): Acer X223W (DFP-0): Internal Dual Link TMDS
[    23.320] (--) NVIDIA(GPU-2): Acer X223W (DFP-1): 330.0 MHz maximum pixel clock
[    23.320] (--) NVIDIA(GPU-2): Acer X223W (DFP-1): Internal Dual Link TMDS
[    23.320] (II) NVIDIA: Using 768.00 MB of virtual memory for indirect memory access.
[    23.330] (II) NVIDIA(0): Setting mode
[    23.330] (II) NVIDIA(0):    "GPU-0.DFP-0:1680x1050+0+0,GPU-0.DFP-1:1680x1050+0+1050,GPU-1.DFP-0:1680x1050+1680+1050,GPU-1.DFP-1:1680x1050+1680+0,GPU-2.DFP-0:1680x1050+3360+0,GPU-2.DFP-1:1680x1050+3360+1050"
]

It seems like it says GPU-2 is invalid, but then afterwards detects it. is there some way of getting X to recognize GPU-2 earlier in the process?? or am I going down the wrong road.

danix 02-14-12 03:08 PM

Re: basemosaic linux
 
Quote:

"It is also supported on Quadro FX 380, Quadro FX 580 and all G80 or higher non-mobile NVS cards."
If it meant all G80/higher except "mobile NVS cards"
or if it meant all G80/higher NVS cards except the mobile ones.
It means the latter: NVS cards, except for mobile ones. BaseMosaic is not supported on GeForce.

Deanjo 02-19-12 08:44 AM

Re: basemosaic linux
 
Quote:

Originally Posted by danix (Post 2528718)
It means the latter: NVS cards, except for mobile ones. BaseMosaic is not supported on GeForce.

Quote:

and all G80 or higher non-mobile NVS cards.
That should really be changed in that sentence to something that makes it a bit more clear like:

Quote:

and all Quadro G80 or higher non-mobile NVS cards.

bwheaton 02-19-12 11:18 AM

Re: basemosaic linux
 
BaseMosaic may not be 'supported' on GeForce cards, but it works on some stuff. One example is the eVGA 2Win cards - with two identical GPUs, linked by an internal PCIe switch. That switch is an NVidia part, afaict, which may be why it works.

Anyhow, you can use BaseMosaic on those. There's a lot of limitations, like with SLI-mosaic - you can't run other GPUs for example. But it works, or did recently (290.10).

Bruce


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