Black screen not working (Windows 10)

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Posted by frankhovin
Digon

Black screen not working (Windows 10)

This seems to be the oposite of the common problem:

I'm unable to show a black screen on the computer I'm connecting to.

I can select "disable remote imput" - which works, and I can also select the "show black screen". Bu this does nothing. On the remote computer, the input is disabled but the screen shows everything.

I've also tried selecting the "enable black screen" option in the tw options on the remote computer, but when I do this the client cannot even connect to it: It hangs forever on "initializing display parameters".

Anyone got any ideas? I was about to buy a license for TW when I noticed this, and it's a complete show stopper for me. There's no official TW help to get either, since I haven't bought a license yet.

I've tried installing and reinstalling the TW monitor drivers on both machines, but TW doesn't even appear to be TRYING to black the remote screen.

2 Accepted Solutions

Accepted Solutions
Posted by frankhovin
Digon
Solution

Re: Black screen not working (Windows 10)

There is no fix. I talked with the development team, sent them logs etc., and the conclusion was that it was a known issue with no scheduled fix. So, basically, the message was "We'll probably fix it sometime, but we cannot say anything about it. It might be in two weeks or two  years. Or never."

Needless to say, I selected another software solution for my company.

Posted by MichaelG
Trigon
Solution

Re: Black screen not working (Windows 10)

@PaulB wrote:

Hey Frank

Try updating to the latest version - I think they have fixed it now.  It worked for me anyway so I am happy.

Paul


Sadly, not for me with recent NVidia drivers.

42 Replies
Posted by bartlanz
Heptagon

Re: Black screen not working (Windows 10)

I have seen this option but never actually used it before today. It appears to work for me from my Dell Laptop to a Samsun All In One that I am setting up. I did need to install the driver you mentioned.

Have you tried it with any other computers in your enviroment yet? I wonder if it is something unique to that machine or that video card model/chipset?

If my post was helpful, Please throw me a Kudos.
If my post fixed your issue, please mark it as the solution to help the next person find a solution quickly.
Bart Lanzillotti
We Do IT USA
www.wedoitusa.com
Posted by frankhovin
Digon

Re: Black screen not working (Windows 10)

I just tried connecting to the same computer with the Android app, actually. And the problem was the same there: The "black screen" option did nothing, but everything else worked fine. Can the problem be that TW isn't able to black the screen of this specific host computer? I'll try using another host computer as soon as possible to troubleshoot further.

Posted by frankhovin
Digon

Re: Black screen not working (Windows 10)

I've now tried what I should've tried right away: Connected from A to B and B to A.

When connecting from ComputerA (Dell Lattitude) to ComputerB (HP ZBook), it doesn't work. Neither Actions->Disable remote input/enable black screen on ComputerA nor Advanced Settings->Enable black screen.

When connecting from ComputerB (HP ZBook) to ComputerA (Dell Lattitude), it DOES work. The moment I select Actions->Disable remote input on ComputerB (HP ZBook), the host monitor (Dell Lattitude) goes blank.

ComputerB (HP ZBook) has two external monitors in addition to the laptop monitor. I'm guessing this might have something to do with the problems? I didn't think about this at first, because I cannot remember the last time I saw a workplace laptop that didn't have at least ONE external monitor.

TW DOES detect the multiple monitors though, and when connecte I can switch between all three.

Posted by CyberTech
Henagon

Re: Black screen not working (Windows 10)

I am having a similar problem.

Remote computer, 3 screens -- all HDMI. Screen blanking worked fine.

Changed one screen to a 2K DisplayPort, and it's unable to blank it.  The HDMI screens still blank fine.

Win10, Teamviewer 12.0.78313

Posted by Ugenx
Photon

Re: Black screen not working (Windows 10)

This is definitely related to displayport/external monitors. I am having the same issue blanking a remote screen connected to a laptop via displayport. This same blanking on the same system and monitor works fine over an HDMI connection.

Posted by MichaelG
Trigon

Re: Black screen not working (Windows 10)

I see the problem too. dual monitors - display port.
I only found out because I was told that I could be seen working. So, I set up my camera to face the screen. Problem verified.

 

Posted by MichaelG
Trigon

Re: Black screen not working (Windows 10)

I just found that it's not blanking on my work computer either. HDMI input on this one.

Posted by Kimber
Henagon

Re: Black screen not working (Windows 10)

Has anyone found a fix for this?

I got the prompt to install the driver, but I didn't restart my computer at the time.

My computer popped up that it stopped the download of the driver.  Now I cannot get the computer to download the driver again.  Each time I select to black the screen, it prompts to download the driver, but it never actually downloads.  Even in the advanced setting, the install monitor driver is grayed out.

 

Posted by frankhovin
Digon
Solution

Re: Black screen not working (Windows 10)

There is no fix. I talked with the development team, sent them logs etc., and the conclusion was that it was a known issue with no scheduled fix. So, basically, the message was "We'll probably fix it sometime, but we cannot say anything about it. It might be in two weeks or two  years. Or never."

Needless to say, I selected another software solution for my company.

Posted by Kimber
Henagon

Re: Black screen not working (Windows 10)

Thanks so much for the reply.  This is really disappointing that they do not have a fix.

What remote software did you decide to use instead?  I've been looking for other options myself.

Posted by MichaelG
Trigon

Re: Black screen not working (Windows 10)

I have the issue on at least 2 computers.
On one (HDMI), uninstalling the driver, then uninstalling TeamViewer, then reinstalling it all fixed it.
On the other with DisplayPort and 2 monitors, it did not help. I have a ticket in.

Posted by janhvh
Photon

Re: Black screen not working (Windows 10)

I have this problem too, and a colleague as well.
One screen goes blank, the other does not.

Might be a difference between HDMI / Digital input / SVGA ?

Posted by MichaelG
Trigon

Re: Black screen not working (Windows 10)

TeamViewer support has been good at working with me, but I did some testing on my own.
I decided to check my NVidia display driver. A new update was available - but it got me thinking. So after allot of testing... the later display drivers do not allow the black screen to work.
I have two DisplayPort monitors.
NVidia driver version and will black screen work...
368.69 - OK
375.70 - OK
376.09 - OK
378.92 - OK (3-20-17)
--------------------------------- Breaks here
381.65 - NO (4-06-17)
381.89 - NO
384.76 - NO
385.28 - NO

Posted by dstells
Digon

Re: Black screen not working (Windows 10)

If I may ask, which other solution did you select? Because I'm having the same issue and it is driving me ever-so-slightly crazy.

Posted by developer300
Electron

Re: Black screen not working (Windows 10)

I have the same issue. Windows 8.1 desktop with 2 dvi/hdmi monitors.

Posted by syslink
Henagon

Re: Black screen not working (Windows 10)

I also have the same problem with my notebook. MS Windows 8.1 and display port <=> HDMI connector. I didn't try to resolve it by disconnecting the external monitor because this is not what I want to. It stopped working since I started using version 13 of TeamViewer.

Posted by PaulB
Digon

Re: Black screen not working (Windows 10)

Not good enough - come on Teamviewer - you can (and do) do better than this!

Highlighted
Posted by frankhovin
Digon

Re: Black screen not working (Windows 10)

Show them that they're losing customers by chosing not to prioritize a serious bug like this. For my part, they've lost a customer with 120-130 users.

12 Replies
Posted by PaulB
Digon

Re: Black screen not working (Windows 10)

What have you moved to Frank?  I have about 10 users.  Teamviewer has been very helpful but right now is no use.
How do we make them prioritize this?

Paul

Posted by PaulB
Digon

Re: Black screen not working (Windows 10)

Hey Frank

Try updating to the latest version - I think they have fixed it now.  It worked for me anyway so I am happy.

Paul

Posted by MichaelG
Trigon
Solution

Re: Black screen not working (Windows 10)

@PaulB wrote:

Hey Frank

Try updating to the latest version - I think they have fixed it now.  It worked for me anyway so I am happy.

Paul


Sadly, not for me with recent NVidia drivers.

Posted by frankhovin
Digon

Re: Black screen not working (Windows 10)

The TeamViewer guys are complete, utter *bleeps*. The monitor driver is unsigned, making it impossible to install on Windows 10 unless you "hack" the security down a notch. And no intelligent administrator will allow that on a coorporate computer.

Once again: **bleep** you, TeamViewer. *bleep bleepity bleep*

Posted by dstells
Digon

Re: Black screen not working (Windows 10)

The issue seems to be primarily with PCs running nVidia drivers. I've noticed it on my MacBook Pro as well (Late 2013, using nVidia 740M 2GB).

There could be some AMD instances, but I see many compliants about nVidia drivers, with specific mentions. I haven't noticed AMD complaints, I suppose because the nVidia compliants have stood out. I wonder how many people on this thread are running nVidia drivers?

I've also noticed on my PCs, my Intel Graphics and AMD graphics don't have this issue. I have a limited testbed, but it does seem to stand out. Doing some looking around it looks like TeamViewer and nVidia have had some trouble playing nicely together at least since TeamViewer 9. 

Posted by dstells
Digon

Re: Black screen not working (Windows 10)

Not to be rude sir, but this isn't helping troubleshoot the issue. 

My driver signing is still enabled and I have no trouble installing or using Teamviewer 12 or 13. Are you running the latest version?

I'm running a mix of 12 and 13 (upgrading them all to 13 now), all on Windows 10 (x64), builds 1703 (Creator's Update, upgrading as well) and 1709 (Fall Creator's Update, fully patched), and I have had 0 issues with installation and not seen the behavior you're describing. I have it installed on 9 computers (personal use, 6 Windows boxes, 2 Macs, 2 CentOS). I have not have not had to lower or adjust a single security setting on Windows; only one setting for SELinux on the CentOS boxes. 

Lowering a security setting isn't "hacking"...it is changing a setting. Unsigned drivers aren't necessarily dangerous either (though I've not had to do this experience with TeamViewer, like you say), it depends on where the driver is coming from and why you're installing it. Reasonable admins should carefully weigh these factors before installing such drivers, but signed drivers aren't a guarantee of security either. They just guarantee that Windows doesn't complain.

Perhaps you'll recall when Adobe dumped their private key onto the internet in September 2017? (https://www.theregister.co.uk/2017/09/22/oh_dear_adobe_security_blog_leaks_private_key_info/) Windows (regardless of version) would have never complained about malicious software signed with that key, but it still would have been a malware-related security event.

The developers at TeamViewer (none of whom I've ever had any contact with) work very hard on a complex software; they offer it free for personal use, and they have created it to be cross platform compatible. Good software is tough to architect and implement to begin with; and even harder to get right across every box every time. Microsoft has been in this game how long? And they break stuff all the time. Apple too. It is a fact of life, especially as tech becomes more complex (and hopefully more useful). Admins should use intelligence and reason, not insults or disparagements to choose which software they use, and why. 

Posted by MichaelG
Trigon

Re: Black screen not working (Windows 10)

I appreciate your sentiment.
While it is free for personal use, I am a paying user.
My issue is that it this has been a problem since April of 2017.  So, for nearly 9 months now, the black screen has not worked with recent NVidia drivers (after 378.92 3-20-17). I get better performance with recent drivers. It is getting more than a little old.

Posted by frankhovin
Digon

Re: Black screen not working (Windows 10)

Lowering the security is very often not possible in a coorporate environment. In my experience it's allmost never possible. These things are controlled by securicy policies. So no - unsigned drivers are not very compatible with a coorporate setting.

As to the argument about it being free for personal use, it's invalid in every way. Whether the software is free or not is no excuse for not making it work properly. If you're not able to get a feature to work, then remove it. Or fix it. It's as simple as that.

Also, many of us are paying customers, which makes the argument about "free for personal use" double useless.

I agree with MichaelG here.This is getting more than old. They have clearly not even attempted to fix this issue;  If they had, things would've happened in the last year or so. It's not a priority for them, which means that they'll lose at least some paying users.

Posted by CarlosC
Henagon

Re: Black screen not working (Windows 10)

We are a paying customer of Teamviewer.
We mainly use the host module so we can support our customers PCs.
In the last years TV lost several of the features that made us chose it in the first place: The ability to use our own logo is gone (now it requires the download directly from TV, which is not allowed for many of our customers), and most important the lost of the ability to black and lock our customer screen.
Yesterday we installed 6 new PCS at one of our customers. It absolutelly requires that for certain operations the screen should be not visible to the user - since we can not support this anymore, we are banned to use TV with this customer - so we have a remote support solution that force us to go physically to our customer to do some operations!!!

A few days ago we received an email from TV asking for our feedback how TV has made us "greener" by reducing travels - We'll be glad to share our experience on how TV has made our face "greener" from rage and despair from the need to GO to the customer.

The ONLY reason that make us still use TV is our base instaled - we have a few customers whose laptops are away, and the change of remote solution we'll have a cost in time and money for us - but we're closer to that decision.

Posted by syslink
Henagon

Re: Black screen not working (Windows 10)

Unfortunately, I am forced to agree with the previous speaker. Maybe I don't have such complicated situation but I also suffer from lack of possibility to working with the blank screen via DisplayPort and DVI on my laptop (I didn't explore this topic on direct laptop screen but I assume that it doesn't work also). I must admit that the attitude of the TeamViewer team is regrettable and gives no support for this problem except emails in "marketing" style "we'll do our best to make TeamViewer better and blabla...".

PS
I bought a corporate version of TeamViewer.

Posted by Kimber
Henagon

Re: Black screen not working (Windows 10)

Same here... my situation isn't complicated, but the black out screen still isn't working.

The pop up shows to install the software everytime I log in and check to black the screen.

Are there any free or low cost alternatives to Teamviewer others are using?

Posted by vasssek
Electron

Re: Black screen not working (Windows 10)

Please fix the black screen functionality in WIn 10...

Thank you

Vasssek

Posted by Beecasa
Electron

Re: Black screen not working (Windows 10)

it happens between monitor on and off.
The way I solved is turn off monitor and remote restart computer via teamviewer.
After reboot and login via teamviewer, I can see the game screen.
Posted by wolf1o
Electron

Re: Black screen not working (Windows 10)

Hi,

I also have this on 2 new dell monitors, windows 10, nvidia quadro card. 

Please fix it!

Posted by IST
Henagon

Re: Black screen not working (Windows 10)


@frankhovinwrote:

There is no fix. I talked with the development team, sent them logs etc., and the conclusion was that it was a known issue with no scheduled fix. So, basically, the message was "We'll probably fix it sometime, but we cannot say anything about it. It might be in two weeks or two  years. Or never."


Why is the post marked as a solution.
Is it a solution if they say, there is no solution?

Needless to say, I selected another software solution for my company.


If TV not willing to fix this, I have to tought about it too

Ingo
Posted by PaulB
Digon

Re: Black screen not working (Windows 10)

What alternative program have you identified and where can I get it ... since Teamviewer do not seem to care any more @frankhovin?

Posted by MichaelG
Trigon

Re: Black screen not working (Windows 10)

Congradulations!.  This probelm has now surpassed it's 1 year anniverasry.
Still not fixed.

Posted by PHXVision
Henagon

Re: Black screen not working (Windows 10)

Believe it or not I found something that worked for me.  This after spending hours on the phone with TV and no resolution.

This worked for me, your MMV. My symptom was the monitor driver refused to install on "some" of my client devices.  My hardware is always Minix Z83 Atom-powered and thus my solution is applicable to using integrated Intel HD Graphics.

Go to Computer Management and set the Display adapter to MS Basic VGA - sometimes the option to Roll Back the driver is present and sometimes it was not for me.  Either way, use Roll Back or the Have Disk method to set the display driver to basic vga.  Reboot.

Half the time or better I got the yellow exclamation point saying the driver had a problem--ignore that, continue and reboot.

Go to TV and now "install" the monitor driver and it will work.

Download the Intel Driver and Support Assistant.  Let it detect your system and for me it offered a 211 MB Graphics/Controller update.  I installed it per the instructions and rebooted.

Works now - the monitor driver stays "installed" from before.  I even tried uninstalling and then installing and it works all the time now.

I realize this may only help those using integrated graphics and/or Atom-powered devices on W10 Ent, but I spent a lot of time reading solutions today and I tried a bunch of them but no luck.

If this method helps maybe one person...  

Posted by ChristophB
Henagon

Re: Black screen not working (Windows 10)

Since about a week my screen stays black when connecting to a remote computer. I've checked the version on the remote site and my site and they are 100% the same. Connecting with another computer running Teamviewer to the remote site work flawless. I've uninstalled Teamviewer several times but always the same result. It's pretty annoying as we have paid for the license over the last 5 years and need the remove access for our daily work.
Posted by frankyboy112
Henagon

Re: Black screen not working (Windows 10)

We are using the latest version 13.1.3629 and the option show black screen is not working.  My laptop is connected with display port (using 3 monitors).

I have this issue since a while...  I rencently upgraded my operating system from windows 8.1 to windows 10 and it was not working in both version.

Francois

Posted by PaulB
Digon

Re: Black screen not working (Windows 10)

I had this problem when I was using Sophos Firewalls and AV.  I have since completely removed Sophos and replaced it with Avast and I have no more issues.

I hate to suggest it, but try completely uninstalling both FIREWALLS and AV on both command and client computers and see if it is still happening ... then reinstall both.  Suspending them for a short while is not the same as deletion and reinstall as sometimes there are TSR parts left behind!
Paul

Posted by laialexander
Digon

Re: Black screen not working (Windows 10)

Which solution you found for your company?

I have similar problem, TV said it was caused by Windows 10 1803 update,. and no update will be released to version 12.  Only version 13 will receive the update to fix the problem.

I am not a fan of service subscription, therefore I will not upgrade to version 13.  Therefore I am looking for alternative solutions.  Any idea could be shared with me?  Thanks.

Alexander

Alexander Lai
lai.alexander@gmail.com
--
Posted by ChristophB
Henagon

Re: Black screen not working (Windows 10)

Indeed, since we are facing this problem and nobody from Teamviewer gave us a solution (remote suppport is vital for us) we started to look into alternatives. I can tell that there are plenty of other tools around which do a good job just google it.

Posted by tAp
Henagon

Re: Black screen not working (Windows 10)

The TeamViewer GmbH code signing certficate expired ‎Saturday, ‎March ‎3, ‎2018 4:59:59 PM. That is why Windows cannot verify the digital signature for the monitor drivers and will not install the driver..