[FIX] Alienware AW2518HF frameskipping/ghosting fix (and possibly all the other AW2XXX series such as the AW2521)

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TommioTTV
Posts: 1
Joined: 31 Jul 2022, 05:57

[FIX] Alienware AW2518HF frameskipping/ghosting fix (and possibly all the other AW2XXX series such as the AW2521)

Post by TommioTTV » 31 Jul 2022, 06:32

The Alienware AW2518HF monitor ships with the incorrect monitor timings which causes frameskipping and terrible ghosting even with no overdrive. The manual specifications do not specify what the proper monitor timings should be other than the horizontal/vertical frequencies and pixel clock totals. The default EDID CTA-861 extension block type doesn't allow for a front porch above a value of 63, so for some reason dell compensated that by increasing the back porch value to 15 (not sure why). Switching the extension block type to DisplayID 2.0 and changing the vertical values to fit CVT-RB2 vertical standards (while keeping horizontal values the same) gave me the exact H/V frequencies and specified pixel clock as described in the manual specifications. Testing this in-game the issue is completely fixed everything with no tearing or visible ghosting on the highest overdrive settings. The correct timings are shown in the CRU screenshot.

Other thoughts:
Strangely enough, the AW2521HF product manual specifications lists the same horizontal/vertical frequencies and pixel clock timings that were incorrectly shipped with the AW2518HF (possibly due to a Dell test employee noticing that the manual specifications didn't match with the actual values and they may have just negligently made a correction on the document in order to save costs within the production pipeline).
Attachments
aw2521hf product specifciation for pixel clocks and horizontal vertical frequencies.jpg
aw2521hf product specifciation for pixel clocks and horizontal vertical frequencies.jpg (84.51 KiB) Viewed 1066 times
AW2518HF product specifciation for pixel clocks and horizontal vertical frequencies.png
AW2518HF product specifciation for pixel clocks and horizontal vertical frequencies.png (46.47 KiB) Viewed 1066 times
AW2518HF CRU correct settings.png
AW2518HF CRU correct settings.png (51.81 KiB) Viewed 1066 times

RestTarRr
Posts: 31
Joined: 08 Mar 2020, 07:08

Re: [FIX] Alienware AW2518HF frameskipping/ghosting fix (and possibly all the other AW2XXX series such as the AW2521)

Post by RestTarRr » 05 Aug 2022, 07:05

Is this better than the exact reduced fix?

BTW how did you know these exact numbers are the correct ones when manual doesn't allow for 121 front porch? Can I somehow brick my monitor with this?

Kyouki
Posts: 40
Joined: 20 Jul 2022, 04:52

Re: [FIX] Alienware AW2518HF frameskipping/ghosting fix (and possibly all the other AW2XXX series such as the AW2521)

Post by Kyouki » 05 Aug 2022, 07:44

I own the AW2521H but I have not experience any frame skipping nor ghosting doing the tests on testufo. as well as the gaming portion seems great!

What else can I check to verify if I suffer or have this issue?
CPU: AMD R9 3950X ~ 4350mhz ~ no C states
RAM: Gskill Bdie 2x16gb TridentZ Neo ~ CL16-16-16-36 1T ~ fine tuned latency
GPU: ASUS TUF 3080 10G OC Edition(v1/non-LHR) ~ disabled Pstates ~ max oced
OS: Fine tuned Windows 10 Pro, manual tuned.
Monitor: Alienware AW2521H ~ mix of ULMB/Gsync @ 240/360hz
More specs: https://kit.co/Kyouki/the-pc-that-stomps-you

Tell
Posts: 8
Joined: 09 May 2018, 07:27

Re: [FIX] Alienware AW2518HF frameskipping/ghosting fix (and possibly all the other AW2XXX series such as the AW2521)

Post by Tell » 05 Aug 2022, 08:48

Does this also apply to the AW2518H g-sync module version?

Bobo
Posts: 44
Joined: 05 Jun 2018, 11:44

Re: [FIX] Alienware AW2518HF frameskipping/ghosting fix (and possibly all the other AW2XXX series such as the AW2521)

Post by Bobo » 12 Aug 2022, 10:21

using DisplayID 2.0, does not work for me.
could it be cuz i`m on HDMI and not Displayport ?

Seph
Posts: 1
Joined: 12 Aug 2022, 10:43

Re: [FIX] Alienware AW2518HF frameskipping/ghosting fix (and possibly all the other AW2XXX series such as the AW2521)

Post by Seph » 12 Aug 2022, 10:51

I briefly tried it and so far it seems it has eliminated the inverse ghosting quite a bit on the highest overdrive.
I'll try some games today and see how it goes.

Kyouki
Posts: 40
Joined: 20 Jul 2022, 04:52

Re: [FIX] Alienware AW2518HF frameskipping/ghosting fix (and possibly all the other AW2XXX series such as the AW2521)

Post by Kyouki » 15 Aug 2022, 04:07

Kinda wish we had more information on this. Is anyone able to explain/tell me how I could test/verify this on my AW2521H model?
CPU: AMD R9 3950X ~ 4350mhz ~ no C states
RAM: Gskill Bdie 2x16gb TridentZ Neo ~ CL16-16-16-36 1T ~ fine tuned latency
GPU: ASUS TUF 3080 10G OC Edition(v1/non-LHR) ~ disabled Pstates ~ max oced
OS: Fine tuned Windows 10 Pro, manual tuned.
Monitor: Alienware AW2521H ~ mix of ULMB/Gsync @ 240/360hz
More specs: https://kit.co/Kyouki/the-pc-that-stomps-you

Bobo
Posts: 44
Joined: 05 Jun 2018, 11:44

Re: [FIX] Alienware AW2518HF frameskipping/ghosting fix (and possibly all the other AW2XXX series such as the AW2521)

Post by Bobo » 15 Aug 2022, 12:12

Seph wrote:
12 Aug 2022, 10:51
I briefly tried it and so far it seems it has eliminated the inverse ghosting quite a bit on the highest overdrive.
I'll try some games today and see how it goes.
are you using hdmi or displayport ?

Boomchakadah
Posts: 83
Joined: 15 Aug 2018, 02:44

Re: [FIX] Alienware AW2518HF frameskipping/ghosting fix (and possibly all the other AW2XXX series such as the AW2521)

Post by Boomchakadah » Yesterday, 02:36

ToastyX, any thoughts on this?
VG258QM 280Hz TN | XG2431 240Hz IPS | XL2540K 240Hz TN | XV252Q 1080p 280Hz IPS | XL2546K 1080p 240hz TN | AW2518HF 1080p 240Hz TN | XV240YP 1080p 165Hz IPS | XG2402 1080p 144hz TN | 27GL83A 1440p 144Hz IPS

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