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Old 05-01-06, 08:40 AM   #1
totalAldo
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Default 4096 virtual screen limit with 1.0-8756

Hello,
I'm using FreeBSD 6.1-RC1 i386 with Nvidia drivers 1.0-8756
I have a 7900GTX powering 2 monitors @ 2560x1600. Using xinerama with 2 screens works great. However, twinview complains when using "leftof" or "rightof" orientations though the vertical orientations work fine. Twinview complains that the virtual screen size exceeds 4096.
Reading a post on the linux forums regarding the quadro 4500, netllama stated that that problem was resolved with this driver release. I was wondering if this is a known issue and if so, will it be addressed.

Also xcompmgr works fine with gnome with 1 2560x1600 screen but breaks on 2 screens using xinerama.
If additional information is required, please let me know.

Thanks!
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Old 05-08-06, 08:54 AM   #2
totalAldo
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Default Re: 4096 virtual screen limit with 1.0-8756

I have now upgraded to FreeBSD 6.1-RELEASE and am using Xorg 6.9.0 from the ports.

The following is a snippet of the error message:

(--) NVIDIA(0): Connected display device(s) on GeForce 7900 GTX at PCI:1:0:0:
(--) NVIDIA(0): Dell 3007WFP (DFP-0)
(--) NVIDIA(0): Dell 3007WFP (DFP-1)
(--) NVIDIA(0): Dell 3007WFP (DFP-0): 330 MHz maximum pixel clock
(--) NVIDIA(0): Dell 3007WFP (DFP-0): Internal Dual Link TMDS
(--) NVIDIA(0): Dell 3007WFP (DFP-1): 330 MHz maximum pixel clock
(--) NVIDIA(0): Dell 3007WFP (DFP-1): Internal Dual Link TMDS
(II) NVIDIA(0): Assigned Display Devices: DFP-0, DFP-1
(II) NVIDIA(0): Validated modes:
(II) NVIDIA(0): "2560x1600,2560x1600"
(II) NVIDIA(0): Virtual screen size determined to be 5120 x 1600
(WW) NVIDIA(0): Virtual screen width of 5120 pixels is too large; clamping to
(WW) NVIDIA(0): 4096
(WW) NVIDIA(0): Mode "2560x1600,2560x1600" is larger than virtual size 4096 x
(WW) NVIDIA(0): 1600; discarding mode
(EE) NVIDIA(0): Failure to construct a valid mode list: no modes remaining.
(EE) NVIDIA(0): *** Aborting ***
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Old 05-24-06, 10:37 AM   #3
totalAldo
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Default Re: 4096 virtual screen limit with 1.0-8762

Same issue with 1.0-8762
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Old 06-23-06, 05:20 PM   #4
nexxus
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Default Re: 4096 virtual screen limit with 1.0-8756

Not sure if you've thought of this, but you could try running without TwinView..just run multiple displays at your chosen resolution and then use "normal" Xinerama to join them together. That should work.

I'm running three 1600x1200 displays (2 video cards..a 7900 GTX and an NVS 440) with no size-related problems. However, I am having the same issue with xcompmgr breaking using multiple desktops/large desktops. Works ok (well, it grays my screen background, but otherwise ok) with one 1600x1200 display, but I get weirdness (gray background, screen flickering, corrupting gkrellm/other windows, covering over windows entirely) with all 3 running.

Anyone have any ideas on this?
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Old 06-25-06, 10:46 AM   #5
totalAldo
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Default Re: 4096 virtual screen limit with 1.0-8756

I am unable to use TwinView with my current (leftOf/rightOf) configuration because it exceeds 4096 pixels (2560x2). While Xinerama works fine to enable 2x 2560x1600 screens, xcompmgr breaks.
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