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Old 04-09-2011, 09:20 AM
Andrew Haley
 
Default 2560x1600 display issue. (x11?, nvidia 8800 GTS, hdmi, dvi-d, Dell U3011)

On 09/04/11 04:05, Linuxguy123 wrote:
> I received the Dell U3011 monitor today, which has a native display
> resolution of 2560x1600.
>
> I have an HP HDX9494 with an Nvidia Geforce 8800 GTS video card in it
> that I am using to drive it.
>
> The user manual for the U3011 is here
> http://support.dell.com/support/edocs/MONITORS/U3011/en/ug/about.htm
>
> The specs for the HDX9494 is here
> http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01490775&tmp_task=prodinfoCatego ry&lc=en&dlc=en&cc=us&os=2100&product=3747924&sw_l ang=
>
> Info on the Geforce 8800 GTS is here
> http://www.nvidia.com/page/geforce_8800.html
> http://www.nvidia.com/page/8800_tech_specs.html
>
> The problem is that I can't get the laptop to HDX9494 to drive the U3011
> at 2560x1600.
>
> The U3011 has several inputs, HDMI, DisplayPort, DVI (Dual link) and
> VGA.
>
> According to the manual, the "highest preset resolution" of the monitor
> when using the HDMI input is 1920x1600 @ 60 Hz. The "highest preset
> resolution" is 2560x1600 for DVI and DisplayPort inputs.
>
> The HDX laptop does not have a DVI or DisplayPort output. It does have
> an HDMI port.

It's not going to work at 2560x1600, then. You need the dual link DVI.

> According to the GF8800 documentation, it has two dual link DVI ports
> that support 2560x1600.
> How do I get my HDX to drive the U3011 at 2560x1600 ?

You can't. It's not physically capable.

With a dual-link DVI setup you'll see

[ 31.372] (II) NOUVEAU(0): Printing probed modes for output DVI-I-1
[ 31.372] (II) NOUVEAU(0): Modeline "2560x1600"x59.9 268.00 2560 2608 2640 2720 1600 1603 1609 1646 +hsync +vsync (98.5 kHz)
[ 31.372] (II) NOUVEAU(0): Modeline "1280x800"x59.9 71.00 1280 1328 1360 1440 800 803 809 823 +hsync -vsync (49.3 kHz)

Andrew.
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Old 04-09-2011, 03:01 PM
Linuxguy123
 
Default 2560x1600 display issue. (x11?, nvidia 8800 GTS, hdmi, dvi-d, Dell U3011)

On Fri, 2011-04-08 at 21:49 -0700, Nataraj wrote:
> On 04/08/2011 09:17 PM, Linuxguy123 wrote:
> > On Fri, 2011-04-08 at 21:59 -0600, Linuxguy123 wrote:
> >> I'll connect to the DVI port and rerun it.
> I have had similar difficulty getting a Dell U3011 to run at 2560x1600
> on a MacMini with an Nvidia GeForce 320M. Using the displayport
> interface on both the 320M and the U3011, the best I can get is
> 1920x1440. I did play with the xorg.conf file quite extensively, but
> didn't do any better trying to specify modelines. I am using the Nvidia
> driver.

You might want to check this thread out.
http://www.nvnews.net/vbulletin/showthread.php?t=160758

DisplayPort should be capable of driving the monitor to full resolution.


> I also had difficulty trying to get a second monitor to work. The
> second monitor is a Dell U2410. I can get either monitor to work fine
> alone, but when I try to start the xserver with 2 monitors connected,
> the second monitor can't sync. The second monitor (U2410) is connected
> to the HDMI port.

I can get 2 monitors working on the HDX. First I connect one monitor to
the VGA port and get it working. Then I disable the laptop display.
Then I add the second monitor.

Right now I am running the U3011 at 1920x1200 and the FPW2007 at
1680x1050.



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Old 04-09-2011, 03:15 PM
Linuxguy123
 
Default 2560x1600 display issue. (x11?, nvidia 8800 GTS, hdmi, dvi-d, Dell U3011)

On Sat, 2011-04-09 at 10:20 +0100, Andrew Haley wrote:
> On 09/04/11 04:05, Linuxguy123 wrote:

<snip>

> > How do I get my HDX to drive the U3011 at 2560x1600 ?
>
> You can't. It's not physically capable.
>
> With a dual-link DVI setup you'll see
>
> [ 31.372] (II) NOUVEAU(0): Printing probed modes for output DVI-I-1
> [ 31.372] (II) NOUVEAU(0): Modeline "2560x1600"x59.9 268.00 2560 2608 2640 2720 1600 1603 1609 1646 +hsync +vsync (98.5 kHz)
> [ 31.372] (II) NOUVEAU(0): Modeline "1280x800"x59.9 71.00 1280 1328 1360 1440 800 803 809 823 +hsync -vsync (49.3 kHz)

a) You are right.

b) It should.

HDMI 1.3 has enough bandwith. See here.
http://en.wikipedia.org/wiki/HDMI

But Dell crippled its HDMI input on the U3011 to 1920x1200. One can get
around that issue by using a Dual Link HDMI to DVI adapter such as this
one.

http://us.startech.com/product/HDMIDVIFM-HDMI-Female-to-DVI-Male-Adapter

The real issue is that either Nvidia or HP made the decision to drive
the HDMI port on my HDX with a single link output instead of a dual link
output.

Its very interesting to read as I get more into this that even laptops
with DisplayPorts aren't guaranteed to drive a monitor at 2560x1600. I
thought that was the point of all these fancy high bandwidth
interfaces !

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Old 04-11-2011, 07:59 AM
Andrew Haley
 
Default 2560x1600 display issue. (x11?, nvidia 8800 GTS, hdmi, dvi-d, Dell U3011)

On 09/04/11 16:15, Linuxguy123 wrote:
> On Sat, 2011-04-09 at 10:20 +0100, Andrew Haley wrote:
>> On 09/04/11 04:05, Linuxguy123 wrote:
>
> <snip>
>
>>> How do I get my HDX to drive the U3011 at 2560x1600 ?
>>
>> You can't. It's not physically capable.
>>
>> With a dual-link DVI setup you'll see
>>
>> [ 31.372] (II) NOUVEAU(0): Printing probed modes for output DVI-I-1
>> [ 31.372] (II) NOUVEAU(0): Modeline "2560x1600"x59.9 268.00 2560 2608 2640 2720 1600 1603 1609 1646 +hsync +vsync (98.5 kHz)
>> [ 31.372] (II) NOUVEAU(0): Modeline "1280x800"x59.9 71.00 1280 1328 1360 1440 800 803 809 823 +hsync -vsync (49.3 kHz)
>
> a) You are right.
>
> b) It should.
>
> HDMI 1.3 has enough bandwith. See here.
> http://en.wikipedia.org/wiki/HDMI

I think you'll find that I told you that first. :-)

> But Dell crippled its HDMI input on the U3011 to 1920x1200. One can get
> around that issue by using a Dual Link HDMI to DVI adapter such as this
> one.

Is the HP HDX9494 capable of driving a dual-link HDMI, then? If so, it's
a trivially solved problem.

> The real issue is that either Nvidia or HP made the decision to drive
> the HDMI port on my HDX with a single link output instead of a dual link
> output.
>
> Its very interesting to read as I get more into this that even laptops
> with DisplayPorts aren't guaranteed to drive a monitor at 2560x1600. I
> thought that was the point of all these fancy high bandwidth
> interfaces !

I can't say I'm surprised.

Andrew.
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