Why am I getting these error messages when I try to view media files on my Android device?
Solution 1:
The error which was clearly shown is, Unable to mount MTP device. So your system fails to mount(open) this mtp device. Installing mtp-tools package will solve this error and makes your mtp device to get connected.
sudo apt-get install mtp-tools
Solution 2:
Resolved this issue by upgrading to Android 4.4. Now, when I plug in the device, I get an "Android" device in Nautilus, which has two separate drives available, my internal and external SD card. There are no interface actions on the phone needed to connect the device. I actually can't tell if it's connecting using MTP or USB mass storage or what, but so long as it's working, I'm not too concerned about it.
Media files don't have preview icons, but can be opened and viewed without any errors.
Solution 3:
On my galaxy s3 (android 4.4), I changed my settings from Media Device (MTP) to Camera (PTP) and I was able to view my Pictures and others files just fine.
Solution 4:
You'll be happy to know the previous set of USB utilities is still there to use. This is a work around rather than a permanent fix. RC
- On your android phone, go to Application->Settings
- In there, go to Wireless and Network and select USB Utilities
- Click on Connect Storage to PC, before you connect a USB cable
- A message should pop up: Connect USB cable to use mass storage
- Now connect the USB cable to computer
- The green android robot should be displayed with an option button for "Connect USB storage;" click on that.
- The green robot turns orange and now you can access the files on the internal storage and SD card of your phone.
source: http://catlingmindswipe.blogspot.com/2012/05/how-to-connect-android-samsung-galaxy.html
My tests indicate that installing PCManFM from Software Center will also allow you to access your files on the device in the way it worked in years gone by.