Announcements

Universal add-on for Android has been released. Learn more.

Highlighted
Posted by
Neutron

Samsung Tablet A: HOST shows black screen, but Quick Support works . Host used to work...

Hello,

I'm using HOST on an Samsung Tablet A (Android 10, SM-T510), to help my aged mother . I like HOST because she doesn't need to activate it.

However, since the July update of Android, when I connect to the Tablet from a Windows 10 PC (or another android), I just get a black screen (although.. once in a  while, it seems to work like before). It was working for months before that.

However, if she starts Quick Support and gives me the autorization, I can see the tablet screen. I have some trouble with the cursor/mouse, but at least I can see the screen.

I've seen many posts on the black screen issue. However, since Quick support works, but Host not, I have the impression that it's not a big technical issue  in my case, and that Host should be able to work also, inspite of the issue with Knox, etc...?

Did somebody experience the same problem, or does TW help has a solution?

Thanks and best regards,

Alex

5 Replies
5 Replies
Highlighted
Posted by
Electron

Re: Samsung Tablet A: HOST shows black screen, but Quick Support works . Host used to work...

I have run into the same problem. Black screen with Host, but not with QuickSupport.  Galaxy Tab A 10.1 2019 Edition.  Same whether accessing it from a PC or another Android tablet.  Would be very interested to know if you (or anyone else) has found a solution.

Highlighted
Posted by
Henagon

Re: Samsung Tablet A: HOST shows black screen, but Quick Support works . Host used to work...

Noticed a similar thing on my SM-T510 but worked out some interesting things.

If my tablet is vertical, I can connect, see the screen and can control it properly.

If I rotate it to horizontal, I can see the screen but clicks are in the wrong place. I confirmed this by turning on "Show taps" and "Pointer lcoation" in Developer Mode. ("Show Taps" is probably not necessary.)

If I rotate back to vertical, everything works again.

On the other hand, if the tablet is horizontal when I start the TeamViewer connection, I get a black screen. The screen stays black even when I rotate back to veritical. Taps in horizontal mode do not land where you'd expect similar to as described above when I can see the screen because I started the connection when the tablet was vertical.

It's like the cursor position on the tablet is being scaled improperly in both directions from the controller side. If upper left corner is 0,0,  Clicked have-way down the client, puts the cursor 32% down the left edge of the tablet. Clicked in the bottom left of the contoller puts the cursor 63% down from the top on the tablet.

Clicking halfway across the controller puts the cursor 77% across the tablet. Clicking the controller 62% across puts the cursor at the rigth edge fo the tablet.

Rotating the table back to veritical, the clicks end up exactly where you'd expect even though the screen is still black.

(I do not have any of these problems with an SM-P610, btw.)

 

 

 

Highlighted
Posted by
Digon

Re: Samsung Tablet A: HOST shows black screen, but Quick Support works . Host used to work...

I have been using Teamviewer Host on a Samsung Tab a 10.1 for a couple of months and then when I logged in all I got was a black screen. If the table was restarted when in the horizontal orientation, Teamviewer would work for a few seconds and then the screen would go black.  After that the screen was always black when teamviewer was started. I set the tablet next to my Windows 10 computer used to control it so I could see what was happening.  The tablet was connecting, the tablet screen would wake up,  but using the mouse was hit and miss.

I also found ( after reading this post) that turning the tablet into the vertical orientation eliminated the black screen and allowed me to control the Samsung Tab A 10.1.  It also seems to allow Teamviewer to maintain contact.  I had problems with Teamviewer disconnecting after a couple of minutes or less.

 

  

Highlighted
Posted by
Digon

Re: Samsung Tablet A: HOST shows black screen, but Quick Support works . Host used to work...

I found I can get by the black screen by tapping the space bar on the controlling computer.  The screen becomes visible but "grayed out".  May have to try different tempo or timing on the taps until it works.

There is a"<" at the left bottom swipe it left with a  left mouse button depressed. The screen comes goes to full color, not gray.  Then swipe up quickly before the screen goes black again.

This seems to work for me, at least for today.

Highlighted
Posted by
Digon

Re: Samsung Tablet A: HOST shows black screen, but Quick Support works . Host used to work...

Hello,

I found I can get by the black screen by tapping the space bar on the controlling computer.  The screen becomes visible but "grayed out".  May have to try different tempo or timing on the taps until it works.

There is a"<" at the left bottom swipe it left with a  left mouse button depressed. The screen comes goes to full color, not gray.  Then swipe up quickly before the screen goes black again.

This seems to work for me, at least for today.