XL2411Z always shows 1920x1080

[kamill]

Hello. My problem is that my BenQ XL2411Z ALWAYS shows 1920x1080 resolution in the OSD menu. Only the refresh rate changes on all resolutions. Monitor still shows 1080p but It's working absolutely fine. How to fix it? For example 800x600 100Hz:

DVI connected to the GTX460, v3 firmware.

[Q83Ia7ta]

scaling options in videocard drivers

[Falkentyne]

Actually that's wrong.
All resolutions are downsampled from the native resolution, so it will always show 1920x1080, unless its preset in the EDID or registry as a separate resolution. Most resolutions you select from the video card driver panel are simply downsampled resolutions that still receive a 1920x1080 signal.
However for a lower resolution to be sent to the monitor and identified as its own resolution, it has to be listed as a standard, detailed or established resolution, which CRU (custom resolution utility) can show. If you want an 800x600 100hz, enter it in CRU as a standard or detailed resolution.

[kamill]

I tried: scaling by monitor, scaling by gpu and no scaling. Still no difference in the osd. My older monitor showed me the resolution.

[Falkentyne]

As I said before, you need to CREATE the resolution.
You completely ignored everything I wrote above, for you. I even told you how to do it.

Your old monitor probably had 800x600 defined as a standard resolution (instead of a downsampled one).
Just because you see a resolution in the video card selection panel or in windows display properties does NOT mean that that resolution is defined as an independent resolution. Most of those are simply defined as resolution steps that scale from a 1920x1080 signal.

I just finished creating a 1280x1024@100 and 1024x768@100 resolution for Unreal Tournament 2004. I switch to 100hz on the windows desktop. Start UT2004, switch to 1280x1024, the XL2720Z shows "suggested resolution: 1920x1080" in a popup and the OSD reports:"1280x1024@100hz".

[kamill]

Ok thanks for the reply. Now I know the difference.

[urut]

Hmm falkentyne. I downloaded cru (cuz i've got same problem ) and in standard and detailed resolutions i add 1024x768 @ 144hz ,1600x900 @ 120hz and 1280x960 @ 120hz (cuz when i set 1600x900 in OSD i've got 1920x1080, and when i set 1280x960 in OSD i've got 1280x1024, and when i set 1024x768 @ 144hz i've got 1920x1080 @ 144hz) I restarted my computer and now when i set in nvidia control panel 1024x768 @ 144hz i still got 1920x1080 @ 144hz in OSD. What i did wrong?

[Falkentyne]

I don't have an Nvidia card so I can't help with Nvidia control panel. Only my laptop has a 570m. Use custom resolution utility (toastyx) for this. Nvidia control panel doesn't give the same flexibility.
Also you can't add 1024x768@144hz as a standard resolution. CRU won't allow that. 144hz uses reduced timings, not normal timings.
Go to 'standard resolutions' tab in CRU. You will see that 120hz is the highest you can create.
144hz has to be created as "automatic-LCD Reduced" under detailed resolutions.

[urut]

Ah. But when i create that resolutions how to set it, cuz i create @ cru that resolutions (yes, in that program from toastyx guy) and in nvidia control panel i only switchin to them. CRU haven't got option to switch to other resolution right? (to change resolution in desktop).

My CRU screenshoot :

What i doing wrong? Im still got 1920x1080 @ 120hz (when i use 1600x900 etc etc)

[Falkentyne]

What happens if you alt tab out of your game and back in?
When I create this resolution and test it in valley benchmark, it shows 1920x1080 @100hz refresh rate even though im on the desktop at 120hz (!) For some reason, it's like valley is trying to use a 100hz refresh rate (which since that 1600x900 isn't defined at 100hz in CRU, its using a 1920x1080 downsampled instead. When I alt tab back in the game, it shows 1600x900@120 in the OSD as this time it actually decides to use what I asked..

it also shows 1600x900 in osd if I use it in the ati CCC as well, right away, without any problems.

Ok, there seems to be some weirdness with how the Benq is handling custom resolutions in Directx 10 and newer games.

DirectX 9 games will use the desktop's refresh rate, and if the resolution is listed in CRU, it will use that resolution instead of 1920x1080 downsampled, so your 1600@900@100 will happily report 1600x900@100 on the OSD. So a DirectX 9 game will use the desktop refresh rate and will report the custom resolution correctly.

However I found some very bizarre results in directX 10+ games.
At 1280x1024 and LOWER resolutions: if your target resolution is listed in Standard resolutions as 100hz, the Benq will use 120hz.
If your target resolution is 120hz, the benq will use 100hz.
If you have BOTH 100 and 120hz listed in your target resolution at the same time, the Benq will use 144 hz. (what)
If the resolution is not listed at all, the benq will use 100hz. At 1280x1024 and higher (if not listed), it will use the desktop refresh rate.

If you list 1600x900@100, it will show up in the OSD in windows as 1600x900@100, but in a game, good luck. It will either be a downsampled 1920x1080@100, or if you have 1600x900@100 and 1600x900@120 listed together, it will run at 144hz if windows is set to 120hz....

The VG248QE acts nothing like this. The VG248 uses 85hz (in a game. at a lower resolution) if windows is set to 60hz...or it uses the desktop refresh rate if the refresh rate is set higher (85+).

I haven't tried this with detailed resolutions...can't be bothered.