I am suddenly finding neither of my Samsung Galaxy 6 phones (identical save for that one is unlocked) will connect to my Lubuntu 20.04LTS system...when they did this morning. I plugged in the cable, would get the "Do you want to allow the connection?" on the phone, I would click "Allow" and then get a file manager alert asking if I want to open the phone.
Now, it simply charges.
I have tried two separate cables and both phones, and when I plug in a flash drive, it works as expected: a pop-up alert comes up right away asking if I want to view the files. I also tried seeing if choosing "Image transfer only" in the USB option would help. (And tried the other options too, just to see if something would reset.) I also shut down the phone completely (as opposed to reboot), and rebooted my computer. I have tried the phone code *#0808# and chosen MTP+ADB. All to no avail.
What on earth happened and please, please help me fix it!!! I need to access the phone all the time.
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