error: exited with non-zero exit status 32: mount: unknown filesystem type 'exfat'
I added a 64 Gigabyte SDcard to my HTC One M8 phone and could not connect to add music or files. The issue is that Ubuntu 14.01 cannot read exFAT formatted drives, which includes most SDCards.
We have to enable exFAT in Ubuntu 14.01 using fuse. Fuse is already in Ubuntu but we have to install the exFAT packages.
sudo apt-get install exfat-fuse exfat-utils
Then uplug your phone from the USB port and plug it back in. Then, in your phone, go into settings (I just scrolled the top bar down) and tap USB File sharing - USB file sharing mode. Then enable Disk Drive - Mount as disk drive.
In just a second you will than be able to see your SDCard in File Manager. Start dragging and dropping your folder onto your phone.