I found solution for this. The problem was, the device /sdc did not have partition created on it. So the whole device was cryptsetuped, but there was no partition on the device.
Making a partiton and the cryptsetup it is the solution. This bug can be closed now. -- Encrypted USB disk is not automounted anymore https://bugs.launchpad.net/bugs/120387 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs