As @anon12454812 has mentioned “This is a Android 6.0 security feature. If for example you connect your phone to a public USB port (i.e in the train, etc.) it doesn’t have direct access to your data - that’s why it is on ‘charging only’ at first.”
I have a similar thing happening to my phone at work. When I plug it in to the USB port the computer nor the phone does anything, not even charging.
To get it to work I have to deactivate and reactivate USB Debugging in the developer menu. After that it works just fine.
No idea why it is doing that.
Exact same problem here (on windows for me and I don’t even see file with PTP)… It was still working yesterday, I didn’t change anything and now I got empty DCIM file which is really frustrating because it’s impossible for me now to back up my trip pictures T.T
Enabled File transfert and USB Debugging Mode without success :’( Can’t find any solution about this persisting pb … Anyone can Help?!
Edit: I finally found a solution to my pb : (which was) switching to MTP with USB debugging ON and still DCIM folder showed empty.
Go to Settings > Apps > (touch the 3 point in the up-right corner) Show System processes (or something like that, I translate from french) > Media Storage > Storage* > Clear DATA.
Don’t be afraid, it has something to do with the way that your fp organizes the data (so it doesn’t affect your data, just the way your phone sees it).
NOTE: It is important to let your fp rebuild his ‘library’ so wait at least 10min and check if you can load properly your pics on the phone (like usual), if it takes to much time, there’s a free app that helps the phone to rebuild it properly (so the phone can show you everything it should) : it’s called media rescan. I did it just to be sure around 20min after I cleared the data of Media Storage.
Then connect your phone like your were used to, choose MTP and it works ! Finally a non-empty DCIM folder : that feels so great
thank you for your tip, I’m facing the exact same problem.
Could you please provide the instructions with the french labels ?
Everything was OK until “show system processes”. But then I cannot find “Storage” alone in the list, only “stockage de l’agenda”, “stockage des paramètres”, “stockage externe”, “stockage multimédia” and “stockage tél et SMS/MMS”. Which is the right one ?
Thanks in advance,
Edit : solved : it was just the order that had to be changed in the path you provide : it should be “Media Storage > Storage” instead of “Storage > Media Storage”.