I'm also getting this error, when investigating the mount problem by calling gnome-mount manually.
"Timeout for waiting for cleartext device... Exiting." The mapper device is set up correctly by gnome-mount. As root, i am able to mount the mapper device without any problems. However, gnome-mount does not mount the filesystem. I tried mounting the mapper device using gnome-mount... don't know if that is supposed to work at all... nevertheless... here is the output trying to mount /dev/mapper/luks.... using gnome-mount. ** (gnome-mount:7786): WARNING **: Given device '/dev/mapper /luks_crypto_5ed4dcfd-85ac-4e33-a899-83f61162d26f' is not a volume or a drive. ** Summary changed: - Feisty Herd 4 does not mount encrypted partition + Feisty does not mount encrypted partition -- Feisty does not mount encrypted partition https://launchpad.net/bugs/88213 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs