It was working fine a few days ago then all of a sudden. Nothing.I'll plug it in phone says allow access, yes and it will show SD card and Phone but try open SD card and I get libmtp error can not get object handles.
Ubuntu – Ubuntu doesn’t recognize the Galaxy 9 phone
I had a similar problem but with Samsung S6 Edge. I used Android File Transfer for linux and it worked! Worked fantastically actually! In a nutshell,... "It just works!"
You will have to download and build it from Github: https://github.com/whoozle/android-file-transfer-linux
Just to add to the limited instructions on the "how to build page" on Github for the less technical, also google's your friend if the instructions underneath aren't clear enough;
~$ sudo apt-get install build-essential cmake libqt4-dev ninja-build libfuse-dev libreadline-dev
~$ mkdir build
~$ cd build
~$ cmake ..
~$ make -j<number of cores you have>. So in my case with an i7 cpu it s
~$ make -j8
~$ cd qt