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Old 04-13-06, 08:36 AM   #13
five0_4tluv
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Default Re: FC3 TwinView Dell 2001FP's

my Video BIOS: 04.34.20.87.00
your VideoBIOS: 04.34.20.22.bf

also i notice my AGP is 4x and yours is 8x

is there a way to flash the BIOS either downgrade or update
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Old 04-13-06, 09:45 AM   #14
five0_4tluv
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Default Re: FC3 TwinView Dell 2001FP's

more info from dmesg...

NVRM: loading NVIDIA Linux x86 Kernel Module 1.0-8756 Wed Mar 29 14:26:26 PST 2006
agpgart: Found an AGP 2.0 compliant device at 0000:00:00.0.
agpgart: Putting AGP V2 device at 0000:00:00.0 into 4x mode
agpgart: Putting AGP V2 device at 0000:01:00.0 into 4x mode

i'm using a Dell Precision WS 350, AGP slot.
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Old 04-13-06, 10:47 AM   #15
netllama
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Default Re: FC3 TwinView Dell 2001FP's

five0_4tluv,
In your latest bug report I see a few problems:
0) Unless I'm overlooking something, you've got a single videocard, yet you're trying to drive 3 display devices, which is not possible. You have one X screen with a CRT, and then you're requesting TwinView (which implies two more display devices) on a second X screen plus Xinerama to tie all (3?) of them together. This is failing, and you're falling back to just two X screens, which might be your intent, and the TwinView portion is perhaps leftover cruft from a previous setup?

1) Again, the DVI connector that you're using is only capable of single link TMDS:
(--) NVIDIA(0): Dell 2001FP (DFP-0): 108 MHz maximum pixel clock
(--) NVIDIA(0): Dell 2001FP (DFP-0): Internal Single Link TMDS

and the EDID needs a 162Mhz pixelclock for 1600x1200:
(--) NVIDIA(1): Detailed Timings:
(--) NVIDIA(1): 1600 x 1200 @ 60Hz
(--) NVIDIA(1): Pixel Clock : 162.00 MHz
(--) NVIDIA(1): HRes, HSyncStart : 1600, 1664
(--) NVIDIA(1): HSyncEnd, HTotal : 1856, 2160
(--) NVIDIA(1): VRes, VSyncStart : 1200, 1201
(--) NVIDIA(1): VSyncEnd, VTotal : 1204, 1250
(--) NVIDIA(1): H/V Polarity : +/+

Please take a look at the X log (either in the bug report, or on the system itself), specifically the portion titled "Modes in ModePool for Dell 2001FP (DFP-0)" for the modes which have been validated to work with your current setup.

Thanks,
Lonni
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Old 04-13-06, 11:14 AM   #16
davemoore
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Default Re: FC3 TwinView Dell 2001FP's

Lonni,

Using reduced blanking, 1600x1200 can be achieved with a pixel clock of 130MHz. Here's a modeline:

Modeline "1600x1200rb" 130.25 1600 1648 1680 1760 1200 1203 1207 1235

I was under the impression that recent NVIDIA drivers will compute these reduced blanking modelines automatically and use them, even when the EDIDs suggest the non-reduced-blanking mode. Is that not the case?

Secondly, my video card is only "single link TDMS", yet I achieve a pixel clock of 135 MHz (see above). Why would five0_4tluv's card only get 108?

Thanks,

David
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Old 04-13-06, 11:21 AM   #17
davemoore
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Default Re: FC3 TwinView Dell 2001FP's

five0_4tluv, here's another idea. Try adding:

Option "ModeValidation" "NoMaxPClkCheck"

to your xorg.conf (see the NVIDIA release notes for details). That will temporarily override the pixel clock check and try to drive your monitor anyway.
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Old 04-13-06, 11:46 AM   #18
five0_4tluv
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Default Re: FC3 TwinView Dell 2001FP's

i only want to use the VGA and DVI devices and configure a 3200x1200 spanning desktop. i have a total of 4 FC3 machines with this same card/monitor configuration and 3 of them work (even though the xorg's are slighly different). maybe i'm misunderstanding TwinView and what it is used for. i guess i'm really looking for a good xorg.conf and one that should work on exact hardware.

thanks
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Old 04-13-06, 12:22 PM   #19
davemoore
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Default Re: FC3 TwinView Dell 2001FP's

Quote:
Originally Posted by five0_4tluv
i guess i'm really looking for a good xorg.conf and one that should work on exact hardware.

thanks
Here's my xorg.conf that does exactly what you want. However, I doubt it will work because of the pixel clock problem described above. Try adding my previous suggestion about Option "ModeValidation" to make it work.
Attached Files
File Type: txt xorg.conf.txt (3.1 KB, 156 views)
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Old 04-13-06, 01:39 PM   #20
netllama
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Default Re: FC3 TwinView Dell 2001FP's

dave,
The manufacturer of the videocard would need to answer for why its TMDS encoder has a specific pixelclock.

The driver does not automagically employ any 'reduced blanking' mechanisms. If someone wishes to drive their display at a blanking rate that is lower than specified in the EDID, they would need to use a custom modeline.

Thanks,
Lonni
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Old 04-13-06, 01:54 PM   #21
five0_4tluv
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Default Re: FC3 TwinView Dell 2001FP's

ok , using your file with the Option "ModeValidation" "NoMaxPClkCheck", made no change. i grabbed some additional chipsets from our lab to test. i used the attached xorg.conf.txt file on a FX5200, FX5600ultra and FX6200 chipset using the same driver (latest) and 2 Dells connected VGA and DVI using the same host.

TEST1: FX5200, CRT-0-1600x1200, DFP-0-nodisplay
(--) NVIDIA(0): Connected display device(s) on GeForce FX 5200 Ultra at
(--) NVIDIA(0): PCI:1:0:0:
(--) NVIDIA(0): Dell 2001FP (CRT-0)
(--) NVIDIA(0): Dell 2001FP (DFP-0)
(--) NVIDIA(0): Dell 2001FP (CRT-0): 350 MHz maximum pixel clock
(--) NVIDIA(0): Dell 2001FP (DFP-0): 108 MHz maximum pixel clock

TEST2: FX5600ultra, same as FX5200
(--) NVIDIA(0): Connected display device(s) on GeForce FX 5600 Ultra at
(--) NVIDIA(0): PCI:1:0:0:
(--) NVIDIA(0): Dell 2001FP (CRT-0)
(--) NVIDIA(0): Dell 2001FP (DFP-0)
(--) NVIDIA(0): Dell 2001FP (CRT-0): 400 MHz maximum pixel clock
(--) NVIDIA(0): Dell 2001FP (DFP-0): 108 MHz maximum pixel clock

TEST3: FX6200, success a 3200x1200 desktop
Connected display device(s) on GeForce 6200 at PCI:1:0:0:
(--) NVIDIA(0): Dell 2001FP (CRT-0)
(--) NVIDIA(0): Dell 2001FP (DFP-0)
(--) NVIDIA(0): Dell 2001FP (CRT-0): 400 MHz maximum pixel clock
(--) NVIDIA(0): Dell 2001FP (DFP-0): 155 MHz maximum pixel clock

so this does lead me to believe it is a bandwidth reporting issue on the DVI port. but what is reporting incorrectly, the chip or the driver?

thanks
Attached Files
File Type: txt xorg.conf.txt (2.4 KB, 132 views)
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Old 04-13-06, 02:04 PM   #22
davemoore
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Default Re: FC3 TwinView Dell 2001FP's

five0_4tluv, could you post the nvidia bug report for the case that Option "ModeValidation" is added but makes no difference?

Also, I assume of those three configurations, only the FX6200 actually worked. Is that correct?

From what vendor do you buy your cards? Perhaps you should ask them if 1600x1200 is a supported resolution over DVI. Is there a windows machine you could try the cards in to see if the windows box can drive 1600x1200?

Lonni, I was under the impression that "Internal Single Link TMDS" means that the TMDS encoder is part of the NV34 silicon. Thus, the vendor should not matter as all NV34s should have the same max pixel clock. Is that incorrect?
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Old 04-13-06, 02:25 PM   #23
five0_4tluv
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Default Re: FC3 TwinView Dell 2001FP's

update. the MSI-FX5600ultra is VGA/DVI-I-dual, so i grabbed a DVI-I to VGA adapter and away we go, success..

i definately think my FX5200 cards are inferrior.. they are Asus branded..(http://malabs.com/product.asp?item_n...ass=navactive2)

i think we will reorder some cards with true dual head (Mhz) capabilities...preferrably DualDVI.

any suggestions?
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Old 04-13-06, 02:30 PM   #24
davemoore
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Default Re: FC3 TwinView Dell 2001FP's

Quote:
Originally Posted by five0_4tluv
i think we will reorder some cards with true dual head (Mhz) capabilities...preferrably DualDVI.

any suggestions?
I think there are a fair number of 6600GT AGP cards available with dual DVI.
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