topic Re: Xperia z4 Tablet suddenly not connecting to PC anymore in Tablets

Xperia z4 Tablet suddenly not connecting to PC anymore

uberGeek — Mon, 20 Feb 2017 17:15:47 GMT

This weekend I tried running an App I've programmed on the z4 in Developer-Mode.

Everything worked just fine and I'm very satisfied with the tablet in general.

Over the weekend the tablet always connected instantly to my Windows 10 Laptop and running the App from AndroidStudio worked just fine. I've also never had any connection problems prior to the last weekend.

This afternoon I wanted to run a newer version of my App on the tablet, but all of a sudden the z4 didn't connect anymore.

No indication of a connection (not on tablet side, nor on laptop), also no indication of charging. - Although the charging icon quickly pops up before vanishing again, once plugged into my laptop.

Also, it's not possible that my App caused all of this, I barely know how to do a HelloWorld-App by now. xD

Hope someone can help since the tablet really helped me for AppDevelopement, since I really love the tablet in general and I don't want to send it in again if not neccessarry.

Thanks

Re: Xperia z4 Tablet suddenly not connecting to PC anymore

Uliwooly — Mon, 20 Feb 2017 19:47:37 GMT

@uberGeek

I'm a bit confused, are you saying that you need your tablet connected to a laptop to get an app update? can you test your device in Safemode

Re: Xperia z4 Tablet suddenly not connecting to PC anymore

CameronT — Tue, 21 Feb 2017 00:02:48 GMT

Hi @uberGeek,

Welcome to the community.

Have you tried another USB cable? Can your tablet charge via the wall charger?

Re: Xperia z4 Tablet suddenly not connecting to PC anymore

NeoBeum — Tue, 21 Feb 2017 04:19:35 GMT

@uberGeek wrote:
Over the weekend the tablet always connected instantly to my Windows 10 Laptop and running the App from AndroidStudio worked just fine

Did Windows 10 do a silent update?

Are you running 10240, 10586 or 14393?

Re: Xperia z4 Tablet suddenly not connecting to PC anymore

uberGeek — Tue, 21 Feb 2017 05:51:13 GMT

Thanks for the warm welcome 😛

Well that's embaressing

Yeah I tried another USB cable just now and also the same problem.

When I plugged in the flsh Icon on the battery logo quickly appeared and then vanished agan, also the Notification light was green for like 0.5 sec - but strangly enough only on one of my laptops' USB-ports, the rest of wich didn't provoke any response on the tablet (accept for a shourt fibration).

Also I treid the wallplug before bed yesterday and it worked just fine.

I also tried restarting the tablet and turning the Developer-options off and back on. Nothing seemed to work for me yeasterday.

I was so confused, since it only just worked a day ago and my phone was able to connect with the same cable just fine.

Since I already had charging isshues before (and I had to send my tablet in), I suspected something like that before trying the wallplug.

Conclusion:

Running out of things to try I just turned off Developer-options and restarted like that. Now everything works fine again. All cabels, all ports, all fine again.

No idea why or how but I'm glad it's fine again.

Sorry for bothering all of you and thanks to everyone who tried to help 🙂

Re: Xperia z4 Tablet suddenly not connecting to PC anymore

Partha1b — Tue, 21 Feb 2017 13:04:46 GMT

Glad it worked out for you. I don't have developer's options (at least I don't think I have ever enabled it on my Z4 tablet) and so that didn't help.

I cannot connect my Z4 to my Mac or PC. The tablet says it's charging but Android File transfer says "connect an Android Device" and Xperia Companion says "Connect an Xperia device".

No, "safe mode" does not do anything to connect my tablet to my PC and Mac.

Yes, the cable works fine with my Nexus phone.

Re: Xperia z4 Tablet suddenly not connecting to PC anymore

CameronT — Wed, 22 Feb 2017 00:53:17 GMT

@uberGeek,

That's strange but I am glad it is working for you.

@Partha1b,

Can you please try restart your computer with your phone connected and unlocked, then run Xperia Companion and see if it does the same thing?

Re: Xperia z4 Tablet suddenly not connecting to PC anymore

Partha1b — Wed, 22 Feb 2017 15:36:00 GMT

@CameronT wrote:
@uberGeek,
That's strange but I am glad it is working for you.
@Partha1b,
Can you please try restart your computer with your phone connected and unlocked, then run Xperia Companion and see if it does the same thing?

Yes, there is no change. the tablet is not recognized at all. Xperia Companion keeps asking me to connect my tablet.

Re: Xperia z4 Tablet suddenly not connecting to PC anymore

CameronT — Thu, 23 Feb 2017 01:00:30 GMT

@Partha1b,

Try other cables and other USB ports in your computer.

Re: Xperia z4 Tablet suddenly not connecting to PC anymore

Partha1b — Thu, 23 Feb 2017 03:22:03 GMT

@CameronT wrote:
@Partha1b,
Try other cables and other USB ports in your computer.

Sorry, no change.

Re: Xperia z4 Tablet suddenly not connecting to PC anymore

NeoBeum — Thu, 23 Feb 2017 20:35:08 GMT

Can you check in Service tests to see if the device thinks it's plugged in? I had this bug in Windows 10 with Quick Charge and it was a pain to reset

Re: Xperia z4 Tablet suddenly not connecting to PC anymore

CameronT — Thu, 23 Feb 2017 23:36:10 GMT

@Partha1b,

I just want to double check that you are unlocking your screen. If the screen is locked then Xperia Companion will not recognise it.

Re: Xperia z4 Tablet suddenly not connecting to PC anymore

Partha1b — Fri, 24 Feb 2017 00:35:30 GMT

@CameronT wrote:
@Partha1b,
I just want to double check that you are unlocking your screen. If the screen is locked then Xperia Companion will not recognise it.

Hi Cameron,

Yes, the tablet is unlocked and I turned off my Windows 10 laptop as you adviced.

Please note that (as I mentioned above) my Mac does not recognize the tablet either.

Thanks,

Partha

Re: Xperia z4 Tablet suddenly not connecting to PC anymore

CameronT — Sun, 26 Feb 2017 23:17:29 GMT

@Partha1b,

Try enabling USB debugging in developer options.

To enable developer options go to Settings > About Phone, and tap on "Build number" multiple times until it says "You are now a developer" or something similar. Then go back to settings, and the new developer options should be there at the bottom.

In there, look for USB debugging, and turn it on, then try again.

Re: Xperia z4 Tablet suddenly not connecting to PC anymore

Partha1b — Mon, 27 Feb 2017 15:44:26 GMT

@CameronT wrote:
@Partha1b,
Try enabling USB debugging in developer options.

To enable developer options go to Settings > About Phone, and tap on "Build number" multiple times until it says "You are now a developer" or something similar. Then go back to settings, and the new developer options should be there at the bottom.
In there, look for USB debugging, and turn it on, then try again.

Well, enabling USB debugging allowed me to set MTP and then the tablet was recognized. Seems odd no?

Thanks,

Partha

Re: Xperia z4 Tablet suddenly not connecting to PC anymore

CameronT — Mon, 27 Feb 2017 23:12:22 GMT

@Partha1b,

Glad to hear that got it working