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September 17th, 2025 14:31
Issue with Intel Iris Xe Graphics Driver – Ultrawide Monitor Resolution & Refresh Rate on Dell Vostro 3400
Dear Dell Support Team,
I am encountering a driver-related issue on my Dell Vostro 3400 (Service Tag: *) when connecting to a Dell S3422DWG monitor (3440x1440).
All newer Intel graphics drivers tested:
Fail to provide the correct aspect ratio,
Do not expose the native resolution 3440x1440 (image is stretched and unusable).
According to Intel’s official specifications, the Intel Iris Xe Graphics (Tiger Lake-UP3, i5-1135G7) supports 3440x1440 at refresh rates up to 120Hz over HDMI. The monitor (Dell S3422DWG) and HDMI cables used are fully compatible with these refresh rates.
However, the Dell-provided/validated graphics drivers do not allow selecting refresh rates higher than 60Hz at 3440x1440. This clearly indicates a driver limitation, not a hardware limitation.
System tested with:
BIOS, chipset and Windows fully updated (Windows 11 Pro x64, Build 26100.6584, 24H2),
Multiple HDMI 2.0/2.1 cables,
Another Dell Vostro 3400 unit (same result),
All other drivers updated.
System specifications:
CPU: Intel Core i5-1135G7
GPU: Intel Iris Xe Graphics
Motherboard: DELL 0GGCMJ (Intel Tiger Lake-UP3 PCH-LP)
RAM: 32GB DDR4 (dual channel, 1333 MHz effective, 17-19-19-35 timings)
My questions:
Why does only driver 30.0.101.1338_A04 expose the proper ultrawide resolution, while newer drivers break it?
Will future Dell/Intel graphics drivers restore proper support for 3440x1440 resolution and refresh rates up to 120Hz, as officially supported by the Intel Iris Xe GPU?
Is there a known workaround (e.g., custom resolution profile or INF modification) to unlock the higher refresh rates until an official fix is released?
This issue is fully reproducible on multiple systems of the same model and is clearly driver-related.
Thank you for your support and clarification.
ejn63
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September 17th, 2025 15:48
See the manual for your system:
Intel Iris Xe Graphics
Shared system memory
user_a116ad
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September 17th, 2025 19:37
@ejn63 Read more carefully. So it's possible, the limitation is just in the driver.
ejn63
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September 17th, 2025 20:58
What you wrote may work - some or even most of the time, but it's based on what the GPU chip supports. That's not the whole story -- the mainboard design is as well.
Dell's specs for this model show FHD only -- yes, you may do better. However, it's not a guarantee. In a sense you're lucky to have what you do, which is beyond the hardware design specification.
Maybe it is partly driver in origin, but there's a reason why Dell specified support for FHD only and I suspect that reason is the cost decision -- the components on the mainboard were chosen to keep this budget model inexpensive -- it wasn't designed for high resolution video.
user_a116ad
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September 18th, 2025 08:07
@ejn63 I think this particular Dell blocks this resolution in the driver.
ejn63
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September 18th, 2025 12:47
That much is clear, but whether it's true or not is open to question.
Try removing the Dell drivers, rebooting and installing the Intel drivers direct from Intel. If that works, you may be correct. If not, the issue is a deeper one -- i.e., that the hardware does not support the resolution you want to run a the mainboard level.
intothedragon
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November 13th, 2025 15:33
Hello, I just got the Alienware 34 - AW3425DWM, and I'm running with the same issue. Luckily, I found your post after hours of struggling to find a solution for this insane, unacceptable problem.
Only the driver 30.0.101.1338_A04 worked for me, too. None of the new Intel drivers let me choose the 3440x1440 resolution. But now all the colors seem odd, and I also lost the audio drivers, but I think I can fix that.
Did you manage to find a better solution for this? thank you