Latitude 5420 + WD19 + Dell 2407WFP has wrong native resolution of 1600x1050

I should have mentioned:

OS: windows 10

@Noske  One more thing: You said you updated the driver for the docking station. There are no drivers related to video output that are specific to the dock. It only has Ethernet and audio drivers. But there is firmware for the dock. Have you updated that too?

Yes, I have updated the firmware on the docking station (not driver).

I have tried both HDMI-to-DVI and DP-to-DVI adapters. I don't have USB-C to DVI at the moment. But my assumption is that it's not the cable/adapter because the setup works fine with 5400.

@Noske  Another thing that would have been good to mention is exactly how you’re connecting the dock to the display. The 2407WFP has VGA, DVI, Component, S-Video, and Composite inputs — none of which are present on the WD19. From your mention of testing with the system’s built-in HDMI output, I’m guessing you’ve got an HDMI to DVI adapter/cable of some kind, in which case even though this shouldn’t be necessary, you might get different results by trying another output from the WD19. There are DisplayPort to DVI and USB-C to DVI adapters/cables, for example.

@Noske  That assumption should be valid, but of course both of those cable setups should be working and they aren't.  As to WHY they're not, that could indeed be some sort of still-unresolved firmware issue with the dock -- I've seen reports of issues running DVI displays before -- but in that case if you don't want to simply wait and hope that it gets fixed someday, another option is to find a workaround that isn't affected by whatever causes the problem.  A USB-C to DVI adapter may provide different results because those cables/adapters have to incorporate an active signal converter chip, since a USB-C port outputs video using DisplayPort protocol natively.  Typical DP to DVI adapters/cables are passive because they rely on the source port supporting "Dual Mode DisplayPort", which allows it to switch to native HDMI/DVI signalling.  The WD19's outputs support this, but again I've seen some other reports of problems driving DVI displays.  And HDMI to DVI cables are also passive because at least up to 1920x1200, HDMI and DVI are supposed to be identical video signals even at an electrical level.  And yet, somehow that doesn't always pan out as it's supposed to.  For example, the XPS 15 9570 has a built-in HDMI output that has been found not to work at all for DVI displays.  Multiple owners have tested multiple cables/adapters with multiple displays, and they've all failed, and to my knowledge Dell has not even acknowledged the issue, never mind explained the underlying cause or fixed it.  I'm not sure how that incompatibility is even possible, but if you Google "XPS 15 7590 DVI site:Dell.com", you'll find several threads about this, some of them quite long.

So you might want to consider getting a USB-C to DVI cable.  By its nature, it will operate differently from the other cables you have, and that may be enough to get your setup working.  And if not, presumably you could return it.

I used to work on DVI and HDMI encoder chips years back so I'm familiar with the standard. HDMI is basically DVI + audio + HDCP, at least initially. Newer HDMI added support for much higher resolution. I bet the issue is the EDID interpreted by the laptop is not correct when dock is used - but I can be wrong.

Is there any way to override the Windows 10 "recommended" resolution to something higher? Does Intel have graphic control program like Nvidia?

@Noske  Yes, Intel has Intel Graphics Control Panel, or Command Center depending on the driver release you’re running. It’s included with the regular Intel Graphics driver package, so you should find it on your system.

Hello!

I'm having exactly the same issue on my side:

My monitor is a NEC 2180UX with a native resolution of 1600x1200, connected via DVI.

I recently bought two new Dell Latitudes (7420 + 7520) together with one WD19S and one WD19TBS dock.

When using the docks, the maximum selectable display resolution is 1280x1024. The recommended resolution by Windows is 1280x960 (probably due to the 4:3 aspect ratio). I'm unable to select 1600x1200. However, the Intel control center correctly detects my monitor and shows a supported resolution of 1600x1200@60p .

Of course the firmwares of the two docks are up to date as well as the firmware/BIOS of the two Latitudes. I'm using Windows 10 21H2 with all updates installed. Dell Command | Update does not show any available updates either. I also tried to use the latest available Iris Xe graphics driver directly from Intel (version 30.0.101.1191) - but this did not help.

However, I tried some other combinations using an older WD15 dock, a portable DA310 dock and an older Latitude 7280. Here are the results:

• Latitude 7420/7520 with WD19S/TBS: 1280x1024
• Latitude 7420/7520 with WD15: 1280x1024
• Latitude 7420/7520 with DA310: 1600x1200
• Latitude 7420/7520 with monitor directly attached (HDMI->DVI): 1600x1200
• Latitude 7280 with WD19S/TBS: 1600x1200
• Latitude 7280 with WD15: 1600x1200

For the connection from the dock to the monitor I tried both DisplayPort->DVI and HDMI->DVI cables. Both kind of cables work fine with 1600x1200 when using the DA310 portable dock. And as you can see above, when using the older Latitude 7280 the native 1600x1200 resolution works with all three docks without any issues (even when connection more than one monitor).

I also made another interesting observation:

When manually doing a "force uninstall" of the graphics driver and then rebooting the system, the Windows hardware manager shows that some default "Basic Windows Display Driver" is used. However, at that moment the native 1600x1200 resolution is used! Few minutes later Windows is automatically installing an Intel driver and ...... the resolution is switching back to 1280x1024 (or x960).

Therefore my assumption is that this a driver issue related to the Intel Iris Xe chipset in combination with Dell docks.

What can be done to get this fixed or correctly addressed with Dell and/or Intel? I bought new laptops and compatible docks, but I'm unable to use them, because the reduced display resolution doesn't look very nice...

Any help is appreciated!

Thanks!

Cenur

Same issues with Xe based laptops overhere. Latitude 7420, 5420, inspiron 7506 2-1.. All in combination with WD19/WD19s docks. Drivers, firmware, etc. all up-to-date. With a Samsung S24E650BW (native 1920x1200) only 1920x1080 is available (HDMI2DVI, DP2VGA, DP2DVI). With an older Samsung with native 1920x1200 the highest is  1280x960 (using DP2VGA).. Using a Ubuntu there is no problem at all.

I suspect the intel driver. See my post on intels comunity forum: https://community.intel.com - Intel Iris XE, Dell WD19s, samsung S24E650BW - non native resolution

same problems here.

latitude 5531 12th gen. tb16 dock

it was cine with 10th gen. 

if i connect direct to laptop work fine.

intel said just dont use docking station. so i think dell need to fix the firmware.

please fix it

Same issue here with a brand new setup.

Machine: Latitude 7440

Graphics: Intel Iris Xe, using latest driver 31.0.101.4575

Dock: WD22TB4, with Dell Firmware Update Utility showing no new updates

Display Samsung Syncmaster with native resolution 1920x1200 and DVI port

Windows: 11

Wire: HDMI<->DVI, DP<->DVI, both with the same result

Intel Graphcis Command Center detects resolution correctly (1920x1200). When the display is plugged directly to the laptop, resolution is correct. When plugged to the dock, system offers 1280x1024 as the maximum.

Can we please have someone look into this? Thanks!

EDIT: for the record, I "solved" this problem by buying new monitors with HDMI ports. I tried a bunch of them (including ones with ridiculously huge resolution) and faced no issue whatsoever as long as DVI was not invlovled.