UGA-2K-A is inverting the resolution of the screen when detecting the attached monitor


#1

I purchased the Plugable UGA-2K-A a few months ago and it had been working flawlessly, however, now it is inverting the resolution of the attached monitor, such that if the attached monitor is 1600x1200 resolution, it detects it as 1200x1600 resolution. This has the result of having a “portrait” screen on a “landscape” monitor. It does this for every monitor on which I have tested it, and I cannot change the resolution as the “Resolution” tab on the Display Link software is grayed out. Is this a know problem? Is there a solution?


#2

Hi Chip,

Thanks for posting! I am sorry to know about the unusual issue that you are having with the Plugable UGA-2K-A.

Could you post back and let us know which version of OS is installed on the system?

Regards,
Roze


#3

This problem happens with both v5.6 and v6.1 of the Display Link software.

Thanks.

Chip


#4

Chip,

Are you on Windows 7 or Windows XP? If you are on Windows 7 could you check the orientation of the monitor connected through the Plugable UGA-2K-A on the Windows Screen Resolution Control Panel (right click on Desktop and select ‘Screen resolution’ from the list) !](https://s3.amazonaws.com/satisfaction-production/s3_images/684869/Screen_Resolution-_Orientation_inline.PNG)](https://s3.amazonaws.com/satisfaction-production/s3_images/684869/Screen_Resolution-_Orientation.PNG)

Is the orientation set to ‘Portrait’?

If yes, could you click on the drop down list and select ‘Landscape’.

!](https://s3.amazonaws.com/satisfaction-production/s3_images/684883/Screen_Resolution-_Orientation_Dropdown_inline.png)](https://s3.amazonaws.com/satisfaction-production/s3_images/684883/Screen_Resolution-_Orientation_Dropdown.png)

If the Orientation is not set to ‘Portrait’ could you send a screenshot of the the Windows Screen Resolution Control Panel with the monitor connected through the Plugable UGA-2K-A selected?

Regards,
Roze


#5

Roz,

Apologies for not mentioning it, I am using Windows Vista Enterprise SP2. Is there an equivalent procedure for setting monitors to portrait or landscape?

Thanks.

Chip


#6

Hi Chip,

Thanks for the additional OS information.

Here’s a link from Microsoft with some information on rotating the screen in Vista.

http://answers.microsoft.com/en-us/wi…

On our Vista test system, the display rotation is handled by the NVIDIA Control Panel. It is accessed by right clicking on the desktop and selecting NVIDIA Control Panel. Does your machine have something similar?

If neither of these work on your system, reply back with the make and model of your machine and we’ll continue digging.

Let us know how it goes,
Thanks Again!

Jerome

Plugable Technologies


#7

Thanks, Jerome.

Tried the MS instructions, and it results in the “Main” screen being rotated 90-degrees (and also puts Display Link into “Mirror” mode), thus, it exacerbates, and does not correct the problem.

I have an HP EliteBook 2730p and it uses the Intel Graphics Media Accelerator Drive for Mobile to manage the Display Setting for the “Main” monitor (it does not provide any facility for managing the Display settings of the “Extended” monitor). I can only manage the display settings for the “Extended” monitor through the DisplayLInk software.

To restate the problem, the DisplayLInk software seems to be detecting my 1600x1200 monitor (NEC MultiSync LCD 2180UX) as a 1200X1600 monitor, and there is no mechanism by which to tell the DisplayLink software that this “auto-detection” is wrong. Everything seems to function as expected, except that the “Extended” monitor is showing as an inverted letterbox.

Does the DisplayLink software write the monitor resolution information to the Windows Registry? I have a sneaking suspicion that this problem is rooted in some miscoding in the Registry.

Thanks, again.

Chip


#8

Hi Chip,

Thanks again for your troubleshooting, and for the additional information. Let’s eliminate the USB graphics adapter and DisplayLink driver and see if your monitor is rotated when connected to the built-in VGA port on the laptop. If the display is still rotated, we’ll have to figure out how to correct it there first.

If it’s no longer rotated, we’ll want to uninstall the DisplayLink drivers with the DisplayLink install cleaner located here:

http://displaylink.com/techsupport_fi…

Then reboot, and re-install version 5.6M1 located here:

http://www.displaylink.com/support/sl…

Let me know how it goes~

Jerome.

Plugable Technologies


#9

Hey Jerome,

Thanks for the directions. Results are (no joy):

  1. Monitor works fine when plugged directly into VGA port, so the problem appears to be isolated to the UGA-2K-A.

  2. Running the cleaner resulted in a different, but not repaired, configuration. Before running the cleaner, the DisplayLink software showed three monitors (1. External monitor plugged into laptop, 2. laptop’s native monitor, 3. monitor plugged into UGA-2K-A (the one with inverted resolution). After running the cleaner (and reinstalling the software), the DisplayLink software shows 4 monitors, the three listed above, plus a 4th which is listed as (Default monitor) connected to UGA-2K-A, so it appears that after the cleaner ran, there are now 2 monitors connected to the UGA-2K-A-----this is obviously wrong. Apparently, the cleaner didn’t completely clear out the old installation, but did allow for another monitor to be connected to the UGA-2K-A (at least, virtually).

Not sure what to do from here, however, my suspicion remains that this is a registry issue.

Thanks, again.

Chip


#10

Jerome,

I was able to fix the problem, but it required that I use the cleaning tool that you provided, and also that I go deep into the registry and delete VIDEO sections of the Hardware Profiles.

In the Registry section: HKEY_LOCAL_MACHINE/SYSTEM/ControlSet…[they are numbered] also in the /CurrentControlSet there are entries of the variety:

/ControlSet…/Harware Profiles/Current/System/CurrentControlSet/Control/VIDEO/{…a bunch of hex code}

these need to be deleted, and the system rebooted.

When you reboot, the system will struggle for a while as it tries to figure out what display is attached (as you just deleted all instructions it keeps to tell it what kind of display is attached), but once it comes up, you can successfully reinstall DisplayLink Manager and the screen resolution will be correct.

There is probably a much more artful way to do this, but this works.

Thanks.

Chip


#11

That’s great Chip,

Thanks for doing the troubleshooting and posting your resolution here. We’ve started a conversation with DisplayLink and will forward your details on to them. There’s a chance for improvement here and we really appreciate your work.

Glad to hear of the success!

Jerome.

Plugable Technologies


#12