Force Custom Resolutions with AMD GPUs

If you force a resolution higher than 2560x1440 you might get faulty images. If you mess up and change the wrong Values you might end up getting the both other display black and Windows crash! Just unplug this Monitor while computer is off and restore a Backup/Restore Point!

If you're not absolutly sure you can do this don't try it! No guarantee what will happen with any other Monitor than Dell U2311H. Do this on your own risk!

How to: Force 2560x1440 resolution on a Dell U2311H monitor on AMD GPU's

Things you need:

Dell U2311H Monitor. (Maybe other monitors will work too)
AMD GPU. (should work with any GPU that uses CCC10.2 driver or higher)
AMD Display Library (ADL) SDK v3.0 (The ADL utility) (Different Host for 3.0 AMD now has 4.0 without ADLutil!)(Download for 4.0 exe only)
A Backup / Restore point of your current Windows.

How it works:

Because the Dell U2311H monitor's are physically limited to a 1920x1080 resolution you won't be able to set anything higher in CCC or Windows.
Even if you input a higher resolution the monitor will downscale it to 1920x1080 pixel. Windows will still work with higher resolution!

Why should i do this?

Absolutly no idea! Windows Desktop looks horrible in 2560x1440, ingame looks fine.
But nice to compare 7680*1440 vs 5760*1080 resolution. You're also able to run 1920x1200 pixel. or 1920x480 pixel with black bars. (Eyefinity simulation)

How to set up:

Be sure to create a Windows restore Point / Backup before trying this!

(all names of the .txt files are just placeholder! you can use them or rename them as you like!)

Extract the archive you downloaded somewhere on your computer. (In my case i put it into C:\AMD)
Open CMD (press Windows Key +R and enter CMD)
use "cd" to switch into the directory in which you unpacked the stuff. more specific into ADL_SDK\adlutil\ and type "adlutil" to get an overview.

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don't forget to press Enter!

Type "adlutil get get.txt" to create a text file with your current display settings.

AdapterIndex 5 DisplayIndex 4 Width 1920 Height 1080 ColorDepth 32 RefreshRate 60.00 XPos -1920 YPos 0 Orientation 0 ModeFlag 0 ModeMask 0x00FF ModeValue 0x0046

AdapterIndex 6 DisplayIndex 3 Width 1920 Height 1080 ColorDepth 32 RefreshRate 60.00 XPos 0 YPos 0 Orientation 0 ModeFlag 0 ModeMask 0x00FF ModeValue 0x0046
AdapterIndex 7 DisplayIndex 1 Width 1920 Height 1080 ColorDepth 32 RefreshRate 60.00 XPos 1920 YPos 0 Orientation 0 ModeFlag 0 ModeMask 0x00FF ModeValue 0x0046

Warning: "Display Index" is not the same as shown in CCC! Take a look on the "XPos" and you might figure out which one is which.

We don't need the "adlutil set get.txt" command here, so we'll skip that. (But if you do! You can use maximal 12 rows! Only one Display per command!)

Enter "adlutil list list.txt" to create a file with current override mode. This should creat an empty file and write into the cmd "TimingOverride list for Adapterindex 5, DisplayIndex 4 is empty!" That's because we haven't used override yet!
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Edit the get.txt so that only the DisplayIndex 1 is shown.
AdapterIndex 7 DisplayIndex 1 Width 1920 Height 1080 ColorDepth 32 RefreshRate 60.00 XPos 1920 YPos 0 Orientation 0 ModeFlag 0 ModeMask 0x00FF ModeValue 0x0046

and then use "adlutil info get.txt d1info.txt" to get the override settings.
AdapterIndex 7 DisplayIndex 1 TimingStandard 16 PossibleStandard 15 RefreshRate 0 Width 0 Height 0 TimingFlags 0 HTotal 2200 HDisplay 1920 HSyncStart 2008 HSyncWidth 44 VTotal 1125 VDisplay 1080 VSyncStart 1084 VSyncWidth 5 PixelClock 14850 HOverscanRight 0 HOverscanLeft 0 VOverscanBottom 0 VOverscanTop 0

Enter "adlutil gen d1.txt" to create a template/sample.
Edit the d1.txt so that only the DisplayIndex 1 is shown.

AdapterIndex 7 DisplayIndex 1 TimingStandard 1 PossibleStandard 0 RefreshRate 60 Width 1920 Height 1080 TimingFlags 0 HTotal 0 HDisplay 0 HSyncStart 0 HSyncWidth 0 VTotal 0 VDisplay 0 VSyncStart 0 VSyncWidth 0 PixelClock 0 HOverscanRight 0 HOverscanLeft 0 VOverscanBottom 0 VOverscanTop 0

Merge settings from d1info.txt into d1.txt. Important! Set "TimingStandard" to "8" this will allow custom resolutions and timings!
AdapterIndex 7 DisplayIndex 1 TimingStandard 8 PossibleStandard 15 RefreshRate 60 Width 1920 Height 1080 TimingFlags 0 HTotal 2200 HDisplay 1920 HSyncStart 2008 HSyncWidth 44 VTotal 1125 VDisplay 1080 VSyncStart 1084 VSyncWidth 5 PixelClock 14850 HOverscanRight 0 HOverscanLeft 0 VOverscanBottom 0 VOverscanTop 0

Now, we want 2560*1440 pixel right? Edit the "Width" and "Height" settings accordingly and save the d1.txt
Do NOT under any circumstances edit the "HDisplay" or "VDisplay"! You might screw your system up badly!

type "adlutil over d1.txt". Done! If your screen didn't change to 2560x1440 pixel you still have to to that manually in CCC or windows settings!

Don't even bother trying something higher than that on a Dell U2311H! It will result in Blackscreen or heavy Graphic problems.

You can change the Width and Height with any value between 640x480 and 2560x1440 ! So if you wan't to run 1920x480! Try it out!
Might look like that in the end!

How to remove:

Well, you don't realy have to! You can just change the resolution back to 1920x1080 pixel!
But if you realy wan't to remove the overdrive modes.
Type "adlutil list r.txt" Change that only one DisplayIndex is shown! and set the "TimingStandard" back to "16".
Type "adlutil over r.txt" this should delete ONE override mode.
IF you set more than one override mode (You have more than one shown in r.txt when you use list command) you have to delet them all manually.
(by redoing these steps for removing)

For more information read the "ADLUTIL User Guide" thats included.