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Hi,
I bought a BenQ XL2411T and I'm trying to enjoy it's full 144hz refresh rate.
The problem is I can't add a custom resolution, the Intel Graphics and Media Control Panel says that "The custom resolution exceeds the maximum bandwidth capacity".
I have a Dual Link DVI-D cable, my laptop has a Dual Link DVI-I port(Which should support DVI-D, correct me if I'm wrong) and the monitor has a Dual Link DVI-D port.
I can't set my refresh rate to anything but 60hz on 1920x1080. In my monitor's settings it says it's at 60hz as well.
I was wondering if anyone has an explanation or a solution or maybe some previous experience with a similar problem?
It's only been a couple hours since I've obtained the monitor started searching for a solution. I've read different opinions, some say the Dual Link might be wired as a Single Link, others say that the HD4000 "bottlenecks" the 680m because all traffic runs through it or something.
Here's a screenshot of the Control Panel and the information tab.
+ Show Spoiler +
Edit:
FYI I have tried 3 different Dual Link DVI-D cables with the same results.
Edit:
Problem solved with the DP to DVI-D converter I bought. I still have issues sometimes(When playing some 144hz full screen games my monitor says I'm using the wrong cable and screen pixel blurs, if I reset my refresh rate to 120 then back to 144 it's gone, if I alt tab back to my desktop it's usually back), I'll probably make a new thread if I can't figure them out myself.
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If your 680m is active, the intel control panel shouldn't even be loading since the intel hd 4000 should be disabled.
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On April 05 2013 03:51 LgNKami wrote:
If your 680m is active, the intel control panel shouldn't even be loading since the intel hd 4000 should be disabled.
I've read about this, my power settings are on high performance, I've picked the "High performance Nvidia processor" in the Nvidia control panel under "Manage 3D settings". Any other suggestions on what I might have forgot? I also reinstalled the drivers for both the HD4000 and 680m a couple of hours ago.
If I disable it in Device Manager, my screen goes black. Might this mean my 680m is not properly installed or seated? It definitely works, the HD4000 can't reach the FPS I get on certain applications.
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First generation alienware m14x laptop has a problem exactly or very similar to this. I went crazy trying to figure out why the computer kept using the integrated graphics over the dedicated card. Eventually I found out the GT650 was bottlenecked by the IGPU because of nvidia's "Optimus" set up. This happens because they set the dedicated video card to kick in when connecting to the hdmi port only. So if you might want to try the displayport or hdmi port on your laptop instead
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On April 05 2013 03:51 LgNKami wrote:
If your 680m is active, the intel control panel shouldn't even be loading since the intel hd 4000 should be disabled.
AFAIK on Optimus systems, video outputs are routed through the Intel integrated, even if the dGPU is doing the processing. The Intel control panel is what's used for settings like these.
Actually I think HD 4000 doesn't support dual-link DVI. Some docs say it doesn't support above 1920x1200 (which would be consistent with HDMI and single-link DVI) except with the DisplayPort output.
Some DVI ports just have the extra connectors even if the hardware can only support single link. That's so both kinds of cables will fit.
I could be way wrong here; don't have any confirmation.
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On April 05 2013 04:18 Myrmidon wrote:Show nested quote +On April 05 2013 03:51 LgNKami wrote:
If your 680m is active, the intel control panel shouldn't even be loading since the intel hd 4000 should be disabled. AFAIK on Optimus systems, video outputs are routed through the Intel integrated, even if the dGPU is doing the processing. The Intel control panel is what's used for settings like these. Actually I think HD 4000 doesn't support dual-link DVI. Some docs say it doesn't support above 1920x1200 (which would be consistent with HDMI and single-link DVI) except with the DisplayPort output. Some DVI ports just have the extra connectors even if the hardware can only support single link. That's so both kinds of cables will fit. I could be way wrong here; don't have any confirmation.
I haven't encountered something called Optimus on my laptop yet. Any way I can verify that I have an Optimus system? It does "smartly" switch between HD4000 and the 680m, although I can pick which.
Now, I assume Optimus is software, so re-installing Windows might make Windows see the 2 GPU's separately?
I'd preferably just disable the HD4000 all together since I practically never run on my mobile battery and henceforth the pros outweigh the cons for me.
On April 05 2013 04:05 Kokujin wrote:
First generation alienware m14x laptop has a problem exactly or very similar to this. I went crazy trying to figure out why the computer kept using the integrated graphics over the dedicated card. Eventually I found out the GT650 was bottlenecked by the IGPU because of nvidia's "Optimus" set up. This happens because they set the dedicated video card to kick in when connecting to the hdmi port only. So if you might want to try the displayport or hdmi port on your laptop instead
I'd do this, but the XL2411t doesn't have a DisplayPort, so I'd have to buy a 100 euro DisplayPort-Dual Link DVI-D adapter just to gamble if it works or not. I'll keep it as a last resort since I might as well sell my monitor and buy one with a DisplayPort for that kind of money ^^ I cringe now for thinking I wouldn't need a DisplayPort in my monitor.
And HDMI doesn't support 1920x1080p @ 120/144hz as far as I know.
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Google says... it won't work with DVI or HDMI. It's only single link on the HD4000. It might work with DisplayPort. If your notebook does not have DisplayPort, the HD4000 can do 1920x1200@60Hz at most.
The HD4000 can apparently do DisplayPort 1.1a which can do 2560x1440@60Hz. That resolution is still less than double the pixels of 1920x1080, so it's no proof that 1920x1080@120Hz or 144Hz would work.
This is all assuming that there's no hardware solution for switching the ports on your notebook between the NVidia graphics and the HD4000 graphics card. Software would mean, the NVidia graphics card sends its frame buffer over the PCI bus to the HD4000, and the notebook's ports are the HD4000 ports.
EDIT: From Wikipedia's "NVidia Optimus" article:
"[...] Even in this case, though, the integrated graphics processor (IGP) is used to output the final image.[...]"
and this:
"Optimus avoids usage of a hardware multiplexer and prevents glitches associated with changing the display driver from IGP to GPU by transferring the display surface from the GPU frame buffer over the PCI Express bus to the main memory-based framebuffer used by the IGP."
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On April 05 2013 04:44 Ropid wrote:
Google says... it won't work with DVI or HDMI. It's only single link on the HD4000. It might work with DisplayPort. If your notebook does not have DisplayPort, the HD4000 can do 1920x1200@60Hz at most.
The HD4000 can apparently do DisplayPort 1.1a which can do 2560x1440@60Hz. That resolution is still less than double the pixels of 1920x1080, so it's no proof that 1920x1080@120Hz or 144Hz would work.
This is all assuming that there's no hardware solution for switching the ports on your notebook between the NVidia graphics and the HD4000 graphics card. Software would mean, the NVidia graphics card sends its frame buffer over the PCI bus to the HD4000, and the notebook's ports are the HD4000 ports.
EDIT: From Wikipedia's "NVidia Optimus" article:
"[...] Even in this case, though, the integrated graphics processor (IGP) is used to output the final image.[...]"
and this:
"Optimus avoids usage of a hardware multiplexer and prevents glitches associated with changing the display driver from IGP to GPU by transferring the display surface from the GPU frame buffer over the PCI Express bus to the main memory-based framebuffer used by the IGP."
You're completely right..
1x Display Port 1.1a
1x DVI-I aansluiting (Single Link)
That's what my motherboard has, I don't know if it's specific for the HD4000 or not.
Well, would a DisplayPort 1.1a/Dual Link DVI-I adapter help me then? Something like this?
I'll have to play at 16/24 bit if I use the DisplayPort but oh well better than nothing.
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most optimus systems have an option in the bios to disable optimus and go with discrete, try that and see if it works under those configurations first before trying to make it work on optimus.
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You should just disable optimus altogether. The internal GPU is used to save power, but if you calculate it it accounts for less than 1kw per year and that is assuming you use your computer a lot.
Today's modern day GPU's have some low power consumption when less active anyways.
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On April 05 2013 05:26 Kupon3ss wrote:
most optimus systems have an option in the bios to disable optimus and go with discrete, try that and see if it works under those configurations first before trying to make it work on optimus.
I don't have any GPU related options in my BIOS, it's a pretty idiot proof one.
On April 05 2013 06:38 BillGates wrote:
You should just disable optimus altogether. The internal GPU is used to save power, but if you calculate it it accounts for less than 1kw per year and that is assuming you use your computer a lot.
Today's modern day GPU's have some low power consumption when less active anyways.
I would, don't care about power consumption as I mentioned I never really run on battery. Only I personally don't have the option AFAIK. It also doesn't change that my Dual Link DVI-I port looking port is actually Single Link :[
On April 05 2013 05:08 Gihi wrote:Well, would a DisplayPort 1.1a/Dual Link DVI-I adapter help me then? Something like this? I'll have to play at 16/24 bit if I use the DisplayPort but oh well better than nothing.
^ Can someone confirm this? I can possibly order tonight & have it by tomorrow ^^
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@Gihi: I'd look into exchanging the monitor with a different one.  I did one short search at amazon.de, and found no cheap dual-link adapters.
You also have to absolutely make sure that your DisplayPort on the notebook is really capable of 2560x1440 resolution. When looking through what Intel's Ivy Bridge can do, it seemed like motherboard makers have the option to route three different outputs to the outside. The first and second can at most do 1920x1200, only the third can do 2560x1440. The first and second can also be used to create a DisplayPort output, not only HDMI and DVI. This means your notebook's DisplayPort could theoretically be a shitty port that can only do 1920x1200. It sounds stupid, but you never know, so look carefully over the notebook's specification.
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If you using Intel HD4000 graphics you cannot go past 60hz, the chip itself, the HD4000 is limited to 60hz....
So turn it off and enjoy.
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On April 05 2013 07:17 Ropid wrote:@Gihi: I'd look into exchanging the monitor with a different one. I did one short search at amazon.de, and found no cheap dual-link adapters. You also have to absolutely make sure that your DisplayPort on the notebook is really capable of 2560x1440 resolution. When looking through what Intel's Ivy Bridge can do, it seemed like motherboard makers have the option to route three different outputs to the outside. The first and second can at most do 1920x1200, only the third can do 2560x1440. The first and second can also be used to create a DisplayPort output, not only HDMI and DVI. This means your notebook's DisplayPort could theoretically be a shitty port that can only do 1920x1200. It sounds stupid, but you never know, so look carefully over the notebook's specification.
Is there any way I can check with software? On the sites that the type of DisplayPort is mentioned it always says 1.1a.
I came across a spreadsheet a while back which showed 1.1a can run 1080p 120hz 24bit. I guess that's something.
Found an adapter for 30+10 euro, guess I'll order it and pray it works decently.
Changing the monitor won't help me if my PC's ports are the problem or am I forgetting something?
Ironic how I thought I wouldn't need a DisplayPort on my monitor since every computer I use has Dual Link DVI ^^ Should've gone for the ASUS one!
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I meant exchanging the monitor with a completely different model that has DisplayPort so that you only need a cable, not a weird adapter, if that's possible where you bought it.
You should try to find out if Senshin is right about the HD4000. You could maybe try testing something like a custom 1368x768 resolution at more than 60 Hz? That's about half the pixels of your normal resolution, so something like 120 Hz should be possible.
Btw: the adapter you linked says it can only do 1920x1200. That's suspicious as that's exactly the limit for single link DVI.
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On April 05 2013 09:25 Ropid wrote:
I meant exchanging the monitor with a completely different model that has DisplayPort so that you only need a cable, not a weird adapter, if that's possible where you bought it.
You should try to find out if Senshin is right about the HD4000. You could maybe try testing something like a custom 1368x768 resolution at more than 60 Hz? That's about half the pixels of your normal resolution, so something like 120 Hz should be possible.
Btw: the adapter you linked says it can only do 1920x1200. That's suspicious as that's exactly the limit for single link DVI.
I tried 800x600 at 120hz, worked fine (Not that I could see 120hz on my desktop, but the Intel app changed it so that should mean it's there), but only for the HD4000, as soon as I swapped to my 680m in-game it would go back to 60gz untill I tabbed out.
I'll try playing a video game at low resolution 120hz.
You're right once more, thank you, I don't speak a lot of German and I didn't notice. This one supports up to 2560x1600 & 1080p HDTV's(Aren't those 120hz?).
Edit:
Played a game using the integrated graphics, could pick 120hz ingame, noticed the difference between capping on 60 and 120 fps(Maybe just placebo, hard to tell with such low resolution and settings) and my monitor's built in menu info showed 120hz as well. Played at 1024x728 (Checked every other preset resolution, this is the highest I could set it at).
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Some review on amazon.co.uk said that adapter worked to get NVidia 3D Vision running on a 120 Hz monitor, so it should be good. I think 3D stuff can't work with low Hz(?)
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On April 05 2013 10:05 Ropid wrote:
Some review on amazon.co.uk said that adapter worked to get NVidia 3D Vision running on a 120 Hz monitor, so it should be good. I think 3D stuff can't work with low Hz(?)
Indeed, as far as I've read 3D requires 120Hz. If everything pans out ok I'll at least be able to enjoy video games on 120hz with 24 bit color, better than nothing. Ordered it, I'll keep this thread updated on my progress in case anyone has the same problem, which is quite likely.
Thanks for all the help!
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Nvidia 3D Vision requires 120 Hz (60 Hz per eye), but passive 3D does not. Hence you get people confused with omg-an-IPS-panel-with-120Hz (incorrect) when actually it only does passive 3D, like on the Asus VG23AH.
If it supports 3D Vision then that should be okay though.
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EPT![[image loading]](http://i.imgur.com/PZn7Kf2.png)
