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emulate
12-24-2013, 09:16 PM
I have a G75vw, and i bought a Benq xl2411T, and i connect them via MinidisplayPort to DVI-I, and then dual link DVI-D from the adapter to the Benq.

The problem is: i cant output 120hz from the benq monitor, it only shows 60hz/75hz in all resolutions and 120hz only in 800x600


I have all drivers ( Benq and Nvidia ) and i have the correct adapter/DVI cables (i think)

Here are the adapter and cable that i use:

Mini DP to DVI-I : http://www.fnac.pt/Belkin-Adaptador-Mini-DisplayPort-DVI-Cabo-Informatica-Outros-Cabos/a681157

DVI-D cable that i use: http://store.apple.com/us/product/HB086LL/A/belkin-dvi-d-dual-link-cable

The Adapter really needs to be DVI-D ? or it can be DVI-I ?


What is the problem ? can someone help me ?

emulate
12-25-2013, 07:29 PM
bump

Dreamonic
12-26-2013, 01:43 PM
Your issue is related to the Mini DP to DVI adapter. In order to run at 120Hz @ 1080p with this kind of adapter, it needs to be USB powered since your BenQ model of panel doesn't have DP input.

Example: http://iforce.co.nz/i/ap322zjq.bzp.jpg

emulate
12-26-2013, 04:01 PM
And where can i get one of these ? can you provide a link please ?

And how do i connect that ? i need to connect the miniDP and the usb ? or only the usb ?

Dreamonic
12-26-2013, 04:10 PM
http://www.amazon.com/StarTech-com-MDP2DVID-DisplayPort-Dual-Link-Powered/dp/B004I6L6DW/ref=sr_1_sc_2?ie=UTF8&qid=1388074180&sr=8-2-spell&keywords=minidp+to+dvi+usb

You can try eBay and local shops as well for a similar product.

emulate
12-26-2013, 04:16 PM
And how do i connect that ? i need to connect the miniDP and the usb ? or only the usb ?

Dreamonic
12-26-2013, 04:18 PM
You connect both the USB and the mini DP, yes. Then you use your DVI cable from there.

emulate
12-26-2013, 04:19 PM
Hm ok thx. You sure that will work ?

Dreamonic
12-26-2013, 04:21 PM
Yes.

You can even do some Google searches of your own to confirm it for yourself.

emulate
12-29-2013, 03:27 AM
I think benq xl2411T dont have USB input. It can have USB input without have a USB port ?

And i searched on google and i cant find any information that this will work, can you provide it to me ?

Dreamonic
12-29-2013, 04:06 AM
The adapter (usb and minidp) just plugs into your notebook and then you connect your DVI cable from the adapter to your display.

http://www.tomshardware.com/forum/395301-33-benq-xl2420t-seriously-help-enable-120hz-1080p


It's because of your setup that requires this option to support 120Hz. Your display does not have a DP input, and your G75 does not have any DVI outputs. So your only 2 options are either buy a different monitor that has native DP inputs or buy an "active" miniDP to DVI adapter; "active" means actively converting. Passive or pass-through adapters are not "active" and are used to convert connection types, not their signals.