"Unable to mount Android, Error initialising camera: -60: Could not lock the device" when connecting a Samsung Galaxy S2 via MTP
Solution 1:
I found that when I was plugged into a usb 3.0 port I got the following messages:
usbfs: USBDEVFS_CONTROL failed cmd gvfs-gphoto2-vo rqt 33 rq 102 len 0 ret -71
But when I plugged into a usb 2.0 port it worked.
Solution 2:
Try this : http://www.tuxtrix.com/2011/07/how-to-access-samsung-galaxy-s-ii-usb.html . It worked for me
Note : In Android 4.0 with TW launcher, you need to click on "more" to get the option.