topic Re: Screen Resolution issue in Digital Exchange

Screen Resolution issue

SunHung1 — Tue, 30 May 2023 14:54:00 GMT

The screen resolution sometimes too small that the automated process will have error:

I tried to use the utility in DX (Blue Prism Digital Exchange) but still cannot change the screen resolution:
Blue Prism Digital Exchange

Tried to contact DX support and replied them that

There is no option for me to change the resolution there, not sure if it is because it is a RDP session or other reasons, pending for DX support reply:

@ewilson , FYI

Re: Screen Resolution issue

harish.mogulluri — Tue, 30 May 2023 15:21:51 GMT

HI Sun Hung - Infrastructure team( Who managed vm's) might blocked to update the settings. you might need to reach internal team for that.

Did you get chance to use this VBO where the screen resolution settings are enabled? if this is not working then let me know.

Re: Screen Resolution issue

ewilson — Tue, 30 May 2023 15:27:57 GMT

Hello @SunHung1

Are you running the Blue Prism process directly on the machine that you're RDP'd into, or are you trying to run it on a separate machine and automate something on the other machine via the RDP connection?

RDP does not allow you to change the resolution of a remote machine. That's not an issue with the Utility - Environment VBO, but a decision made by Microsoft in how the RDP protocol will work or not work in this case.

Just to be clear, you can usually change the resolution of the RDP session itself via the Remote Desktop Client UI. I believe you right click on the saved connection details and there's an option to adjust the resolution. However, as far as I know you can't change the resolution of the remote machine via an RDP session.

Cheers,
Eric

Re: Screen Resolution issue

SunHung1 — Wed, 31 May 2023 01:20:26 GMT

Thanks both.
I tried to run the process and please find below session log:

So we can see the "Success" is False.

The PC is far away so I tried to use RDP to check.
If visit physically, the display resolution setting is available:

Re: Screen Resolution issue

ewilson — Wed, 31 May 2023 16:55:51 GMT

@SunHung1

What O/S is the remote machine running?

Cheers,
Eric

Re: Screen Resolution issue

SunHung1 — Thu, 01 Jun 2023 03:28:43 GMT

Hi @ewilson , it is Windows 10, thanks.

Re: Screen Resolution issue

ewilson — Thu, 01 Jun 2023 17:04:45 GMT

@SunHung1

Very strange behavior. This logic has been tested in Windows 10 without issue. It sounds more like there's something within the local configuration of the machine that's preventing the resolution changes. Can you log into the machine directly using the same account the digital worker would use? If so, it would be good to see if there's a Local Group Policy definition that's locked the display to whatever the standard resolution is.

If you go to the Start menu and type gpedit.msc and the <Enter>, that will bring up the Local Group Policy Editor. From there, you want to go to Local Computer Policy -> User Configuration -> Administrative Templates -> Control Panel -> Display. In the window on the right check the Disable the Display Control Panel setting. Is it enabled?

Cheers,

Eric

Re: Screen Resolution issue

SunHung1 — Fri, 02 Jun 2023 02:27:47 GMT

Hi @Eric Wilson , thanks for your reply.

It is "Not configured", same as your screenshot:

Re: Screen Resolution issue

ewilson — Fri, 02 Jun 2023 14:45:48 GMT

@SunHung1

I've attached a debug version of the Utility - Environment VBO. Please import this and run your test again. This version includes an additional output parameter from the Set Screen Resolution action called DISP Code. This is a numeric value that corresponds to the return code from the system function we call to make the resolution change. Possible return values are:

DISP_CHANGE_SUCCESSFUL = 0
DISP_CHANGE_RESTART = 1
DISP_CHANGE_FAILED = -1
DISP_CHANGE_BADMODE = -2
DISP_CHANGE_NOTUPDATED = -3
DISP_CHANGE_BADFLAGS = -4
DISP_CHANGE_BADPARAM = -5

Lets see what code the O/S is throwing.

Cheers,

Eric

Re: Screen Resolution issue

SunHung1 — Mon, 05 Jun 2023 03:16:42 GMT

Thanks @ewilson , return code "-2" found:

Re: Screen Resolution issue

ewilson — Mon, 05 Jun 2023 14:11:56 GMT

@SunHung1

That's interesting. So from the perspective of the operating system and the display driver, the resolution you're providing cannot be supported. This could be for a couple different reasons.

The resolution is actually not supported by the display driver, but I believe you showed that the resolution does show up in the available options when you log directly into the machine, correct?
The display driver may not be able to switch to that resolution at the moment because the machines requires a reboot. Do you know if this machine/VM has been rebooted recently? If not, I'd suggest rebooting it and then test the resolution change again.

Cheers,

Eric

Re: Screen Resolution issue

ewilson — Mon, 05 Jun 2023 14:22:23 GMT

@SunHung1

I just noticed from you screenshot that it looks like you have the Vertical and Horizontal values swapped. This is what you have:

It should actually be this:

Try swapping them around and test again.

Cheers,

Eric

Re: Screen Resolution issue

SunHung1 — Tue, 06 Jun 2023 06:53:06 GMT

@Eric Wilson , thanks a lot and it is working now!

I will proceed to test in PRD environment and hopefully it will work too.

(It is because we are using physical PC in UAT environment but vPC in PRD).

Re: Screen Resolution issue

ewilson — Tue, 06 Jun 2023 12:22:05 GMT

@SunHung1

I'm glad to hear it's working for you now. It would be great if you could revisit your asset review on the DX. 😁

Cheers,

Eric

Re: Screen Resolution issue

zdenek.kabatek — Tue, 06 Jun 2023 14:45:21 GMT

Hi, Eric,

I tried everything what you recommended, however, no luck. Even with your updated version of VBO I am still getting DISP to be -2.

Any other hint?

Regards

Zdenek

Re: Screen Resolution issue

ewilson — Tue, 06 Jun 2023 22:34:41 GMT

Hello @Zdeněk Kabátek

Let's start at the beginning. You're testing on a Windows 10 Enterprise machine. Is this your local machine or a machine you're RDP'd into? I assume when you look at the Display Settings on the machine, 1920x1080 is shown as a supported resolution and you have the ability to set it manually? Have you recently rebooted the machine/image and tried setting the resolution after that?

Cheers,

Eric

Re: Screen Resolution issue

zdenek.kabatek — Thu, 08 Jun 2023 06:39:35 GMT

Hi, Eric,

let me answer your questions:

it is the machine I am RDP'd into if I need to see something otherwise it is running through Login Agent
When I look at the display settings I do not see any resolution as it is disabled when RDP'd. The same which Sun Hung gave in his first post.
I can't change the resolution when I am RDP'd it takes resolution from my computer and it displays 1920x1080.
Yes, I rebooted the machine but still I can't change the resolution.

I have been struggling with this for more thann 6 months (well, it is not so serious just screen shots having smaller resolution) but I have tried everything what was discussed in community and still no luck. So I hoped that this could resolve it but again this solution does not work for me.

I did one test just now - when I put screen resolution to 1280x800 (HxV) it runs fine and returns true. That is the default resolution. So the action works it is just the machine for some reason does not allow to change the resolution. Any clue why?

Regards

Zdenek

Re: Screen Resolution issue

ewilson — Thu, 08 Jun 2023 12:59:22 GMT

@Zdeněk Kabátek

To be clear, you're running the process while you're RDP'd into the machine? If so, I believe the issue is RDP. If you run the process on that machine from Control Room and then look at the session log afterwards, do you see that the resolution was changed? If it worked as expected, then it's definitely RDP. In that case I'd say you might want to investigate a different remote access application (ex. VNC).

Cheers,

Eric

Re: Screen Resolution issue

zdenek.kabatek — Thu, 08 Jun 2023 13:37:12 GMT

Hi, Eric,

nope, I understand that when I RDP to the machine it will take resolution from my computer.

I am talking about running Login Agent then running a process and trying to change screen resolution. For some reason I can't change it and I am getting -2 in DSP variable.

When I want to set up resolution different from the existing one I always get the error. When I run the action with the resolution which is there natively (1280x800) the action returns all parameters are ok.

Regards

Zdenek

Re: Screen Resolution issue

shashank.kumar280 — Thu, 08 Jun 2023 14:17:17 GMT

@Zdeněk Kabátek

Are you able to RDP into the machine with your desired resolution