hibernate and resume with dm-crypt under ubuntu

I could conclude there is no way out-of-the-box with ubuntu and I now use truecrypt.

Don't make the mistake and try hibernate/resume with dm-crypt with big 2TB disk. This trying costs me three full days copying data with no result :(. I repeated it successfully with truecrypt.

I already had truecrypt running for years ... for some sensitive private data. I'd like to try something new and failed.