2560x1600 display issue. (x11?, nvidia 8800 GTS, hdmi, dvi-d, Dell U3011)

[Andrew Haley]

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.