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Old 08-10-09, 03:47 PM   #1
oaj
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Default Which NVIDIA Graphics Cards can display 2048x2048 ?

Hi!

I would like to use an nvidia graphics card, to drive a 2048x2048 square LCD Display like BARCO's ISIS (MDP-471).
(Please see http://www.barco.com/barcoview/downl...atasheet_l.pdf)
The BARCO display does not support EDID.

I have this card:
GeForce 9800 GT
VBIOS Version: 62.92.52.00.1d
Memory: 1024 MB
Bus Type: PCI Express 16x
Bus ID: 3:0:0
PCI Device ID: 0x614
PCI Vendor ID: 0x10de
IRQ: 201

I'm using Linux CentOS-5.3-x86_64 / debian-502-amd64 ("stable"),
and I have installed NVIDIA's driver x86_64 version 185.18.31.

The "nvidia-settings" program don't list de 2048x2048 resolution.

I've tried to use "xrandr", but it doesn't work too.

I saw this url: http://forums.entechtaiwan.com/index.php?topic=1168.0

I've configured my "/etc/X11/xorg.cfg" defining modeline parameters, and disabling DDC and EDID like below:

...
Section "Monitor"
...
ModeLine "2048x2048" 360.060 2048 2216 2440 2832 2048 2049 2052 2119 +hsync +vsync
...
EndSection
...
...
Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce 9800 GT"
Option "NoDDC" "true"
Option "DPI" "96 x 96"
Option "UseEDID" "FALSE"
Option "UseEDIDFreqs" "FALSE"
Option "UseEDIDDpi" "FALSE"
Option "ModeValidation" "NoEdidModes"
EndSection
...

But this configuration also doesn't work.

BARCO's display must be driven using the following frequencies:
- Horizontal frequency: 118.187 KHz
- Vertical frequency: 56.821 Hz
- Pixel Clock: 257.000 MHz
- Number of Lines: 2080

My questions are:
1) Which NVIDIA Graphics Cards can display 2048x2048 using frequencies listed above ?
2) How can I configure this ?

Thanks in advance.

Odracir.
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Old 08-10-09, 04:40 PM   #2
mooninite
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Default Re: Which NVIDIA Graphics Cards can display 2048x2048 ?

For 2048 squared I think you need a DisplayPort connection. Dual-link DVI is stuck at 1600 pixels tall.

However, if you could live with something lower than 60Hz refresh, then you could squeeze something out on DVI or VGA. I don't know for sure though since I've never attempted a real setup like this.
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Old 08-10-09, 05:27 PM   #3
JaXXoN
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Default Re: Which NVIDIA Graphics Cards can display 2048x2048 ?

Unfortunately, the pixel clock for the gtf based modeline above is out of range
for DVI (330 MHz vs 360.06 MHz). Where did you got the vertical and horizontal
frequencies from? Maybe there is also information concerning front/back porch
and sync pulse? If you could provide that, then I could try to calculate a
modeline for you.

Next, please add a full nvidia-bug-report.log for details, i.e. you may have
forgotten to apply Option "ExactModeTimingsDVI" "True" in your xorg.conf.

I guess the simplest solution would be to (test-)install Windows XP, install
the nvidia driver. Then do whatever it takes to make the LCD showing 2048x2048.
Finally retrieve the timing information using the nvidia control panel (check
"Manage Custom Resolutions" or something like this). Post a screenshot
of the timing values and I can easily create the modeline for you.

regards

Bernhard
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Old 08-10-09, 05:29 PM   #4
AaronP
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Default Re: Which NVIDIA Graphics Cards can display 2048x2048 ?

Please see the forums sticky posts about how to generate a verbose bug report log file. Also, you may need to use the ExactModeTimingsDVI option to force the GPU to output your specific ModeLine timings.
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Old 08-10-09, 05:45 PM   #5
JaXXoN
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Default Re: Which NVIDIA Graphics Cards can display 2048x2048 ?

Hi!

Here's a modeline that fits to the giving timing requirements, above, but
the porch and sync timings are conservative guesstimations:

ModeLine "2048x2048" 257.00 2048 2080 2112 2174 2048 2051 2055 2080

Assumptions:
horizontal: back porch = sync pulse = 25% of blanking time
vertical: back porch = 3 lines, sync pulse = 4 lines

regards

Bernhard
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Old 08-12-09, 08:21 AM   #6
oaj
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Default Re: Which NVIDIA Graphics Cards can display 2048x2048 ?

Hi Bernhard!

I got that "modeline example" from here -> http://forums.entechtaiwan.com/index.php?topic=1168.0 .
But I think that modeline values are wrong. I've tested and didn't work.

BARCO's ISIS (MDP-471) Display has an "On Screen Display" that shows some technical information.
I got these info below using BARCO's "On Screen Display", as a reference for future comparison:

a) Condition: Linux CentOS-5.3 x86_64 + BARCO's Display + BARCO's Graphics Card
- Horizontal frequency: 118.187 KHz
- Vertical frequency: 56.821 Hz
- Pixel Clock: 257.000 MHz
- Number of Lines: 2080

b) Condition: Solaris on Spark + BARCO's Display + BARCO's Graphics Card
- Horizontal frequency: 125.020 KHz
- Vertical frequency: 60.106 Hz
- Pixel Clock: 271.000 MHz
- Number of Lines: 2080

I'm looking for more information about front/back porch and sync pulse, but I don't have it yet.

A coleague lend me another machine with Windows XP and a GeForce 9300 GE, and I have started some tests with this ...
I think that will be easier to change and test values using this new test environment/configuration, although sometimes windows "freezes" and must be reset.

I've included Option "ExactModeTimingsDVI" "True" on my xorg.conf .

As soon as I manage to get a working configuration on Windows, I will post it here.

Thank you very much!

Odracir.
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Old 08-12-09, 09:29 AM   #7
JaXXoN
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Default Re: Which NVIDIA Graphics Cards can display 2048x2048 ?

Quote:
Originally Posted by oaj View Post
I got that "modeline example" from here -> http://forums.entechtaiwan.com/index.php?topic=1168.0 .
But I think that modeline values are wrong. I've tested and didn't work.
The modeline you are referring to has been generated with a command
line tool called "gtf", i.e. try this:

Code:
gtf 2048 2048 60
I would expect the resulting modeline not to work because the pixel clock
determined by gtf (360.06 MHz) is beyond the limit of a dual-link DVI output
(330 MHz).

The result of "gtf 2048 2048 55.46" might work:

Code:
Modeline "2048x2048_55.46"  330.00  2048 2208 2432 2816  2048 2049 2052 2113
But i guess you need is a modeline specific for the MDS-471, i.e.
something like handcrafted in posting #5 in this thread (BTW.: did
you tried that out, yet?).

Quote:
Originally Posted by oaj View Post
A coleague lend me another machine with Windows XP and a GeForce 9300 GE, and I have started some tests with this ...
Does there exist some sort of "driver" software for nvidia on XP for the display?
I couldn't easily google something on that topic. Otherwise, do you have access
to one of those Barco PVS6 video cards? If true, then it should be possible to
retrieve the timing information with the "PowerStrip" tool on XP.

regards

Bernhard
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Old 08-13-09, 02:14 PM   #8
oaj
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Default Re: Which NVIDIA Graphics Cards can display 2048x2048 ?

Hi

My test environment is shared with other department (Q&A);
and they must use it for 2 or 3 weeks in an exclusive/higher priority way.
Then I need to wait the end of their tests ...

As soon as I get access to the test environment, I will try to test this.

I would like to thanks to all of you, for your attention and patience.

Odracir
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Old 09-03-09, 02:26 AM   #9
wyvern666
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Default Re: Which NVIDIA Graphics Cards can display 2048x2048 ?

Hi there,

I have solved the same issue (i.e. BARCO ISIS MDP-471 with nVidia Quadro FX) with the following configuration. Maybe some of my modifications wasn't necessary, but it works!

Section "Monitor"
Identifier "Monitor0"
VendorName "BARCO"
ModelName "ISIS"
Option "DPMS"
ModeLine "2048x2048" 257.00 2048 2080 2112 2174 2048 2051 2055 2080
EndSection

Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
Option "DPI" "96 x 96"
Option "UseEDIDFreqs" "FALSE"
Option "UseEDIDDpi" "FALSE"
Option "ModeValidation" "NoEdidModes, NoDFPNativeResolutionCheck, NoVirtualSizeCheck, NoMaxPClkCheck, NoEdidMaxPClkCheck, NoMaxSizeCheck, NoHorizSyncCheck, NoVertRefreshCheck"
Option "ExactModeTimingsDVI" "True"
Option "ConnectedMonitor" "DFP"
EndSection

Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Depth 24
Modes "2048x2048"
Virtual 2048 2048
EndSubSection
EndSection


P.S.: Very thanks for your Modeline, Bernhard! All other Modelines, either posted here or calculated by me doesn't work...
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Old 10-13-09, 04:38 PM   #10
amiga_linux
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Default Re: Which NVIDIA Graphics Cards can display 2048x2048 ?

Hi all,
Hallo Bernhard,

Funktioniert die Xorg.conf auch für den Analogen Ausgang? Ich habe das selbe Barco MDP-471 2k Square LCD Display mit RGBHV Eingang. Weiss jemand ob das mit 50Ohm an RGB und 75Ohm an H/V Sync mit "Normalen Grafikkarten" funktioniert?
Kann man eine 2048x2048 Auflösung auch mit einer Matrox Parhelia 128MB Grafikkarte unter Linux ansteuern? Laut Hersteller kann die Geforce 9800 GT keine 2048x2048 Auflösung darstellen? Ist eine 2k Auflösung mit der Geforce auch unter Windows möglich?

Gruss Patrick
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Old 10-14-09, 12:00 AM   #11
JaXXoN
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Default Re: Which NVIDIA Graphics Cards can display 2048x2048 ?

Quote:
Originally Posted by amiga_linux View Post
Funktioniert die Xorg.conf auch für den Analogen Ausgang?
If your video card has a DVI-D output, then it should be possible to get
a VGA signal through a cheap DVI-to->VGA adaptor, but you need to
try it out to be sure (unfortunately, I don't have the necessary equipment
around, right now).

Quote:
Originally Posted by amiga_linux View Post
Ich habe das selbe Barco MDP-471 2k Square LCD Display mit RGBHV Eingang. Weiss jemand ob das mit 50Ohm an RGB und 75Ohm an H/V Sync mit "Normalen Grafikkarten" funktioniert?
An RGB signal impedance missmatch most typically results in "shadows".
There are ready-to-buy impedance transformers available. Just google for
50:75 impedance transformer.

Quote:
Originally Posted by amiga_linux View Post
Kann man eine 2048x2048 Auflösung auch mit einer Matrox Parhelia 128MB Grafikkarte unter Linux ansteuern?
I have no practical experience with that product. Per Matrox, the maximum resolution
for the analog output is 2048x1536, but that doesn't necessarily mean a lot, i.e.
for nvidia cards the maximum resolution per output is 2560x1600, but I'm operating
my GTX 260 at 5040x1050 (per output).

Quote:
Originally Posted by amiga_linux View Post
Laut Hersteller kann die Geforce 9800 GT keine 2048x2048 Auflösung darstellen?
For nvidia cards, it seems like you can program the timing values
(H/V visible, porch, sync and total) from 0 to 32767, so I'm almost
certain it should work. Also, my understanding is that wyvern666
reported success for his nvidia/barco combo, but I don't know
which exact card he used. Details about his setup would interesting.

Quote:
Originally Posted by amiga_linux View Post
Ist eine 2k Auflösung mit der Geforce auch unter Windows möglich?
It is possible to create "custom resolutions" with the nvidia configuration
tool that comes with the windows driver. However, I never tried that out
myself, so I can't tell for sure ...

regards

Bernhard
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Old 10-14-09, 06:57 AM   #12
amiga_linux
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Default Re: Which NVIDIA Graphics Cards can display 2048x2048 ?

I have decided to buy a Geforce Graphic Card.
Is there still an AGP Geforce with I can explain a 2048x2048 resolution? I still have a ATI HD-2400 AGP, are the also freely programable like the Geforce? So i can use the ATI Card.
Thanks for the idea with the impedance transformation!

The reason why I me so interessted for this Thread is that I have assembled from two "faulty" MDP-471 Panel "perhaps" functioning. If now I turn on the repaired Panel, comes in the biology deposited 2K pyramid with the Egyptian eye. Because I, however, still no source with the correct resolution, I can't say it to functioned not yet whether.

Ps. Sorry for my BAD english. :-) reverso.net

Thank you Bernhard
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