Ubuntu – How to view contents of Android(4.1.2) folders on Ubuntu

Hello AskUbuntu Community! I am hoping you will be able to help me, or help me help you help me! I am trying to access my music stored on the external MicroSD card on my Samsung Android SGH-T699 via usb.

When I connect the phone to usb port, I get the pop up "Unable to mount Samsung Android SGH-T699" "Error initializing camera:-60:Could not lock the device." I just hit okay, and I can still view the folders on both the phone, and the ext_sd.

When I click on a folder, it goes into the directory, but does not display any of it the contents that are in it. Now a couple of weeks ago, I was able to put music on my phone, and read and write onto it (even with the error pop-up) just fine. Then I got an update, and it now it will not display any of the contents of the phone, or SD card.

Any help would be appreciated!

I have tried a google search. Many people seemed to have similar problems with their phone and Ubuntu. Their solutions, either did not work, or they had a different version with different options. Like ICS vs JellyBean.

1. Android developer options, USB Debugging.

2. Debian OS and same problem. I do not have any other computer to try, and no other OSes installed.

3. listing with hidden view enabled.

Let me know if you need more information. Thank you in advance.