Linux wallet is not possible to sync. Tried many things, but nothing helped. Headers sync stuck on 37%. Also the development of wallet is almost non existent. I may have to sell the coins and leave project as I'm not capable to have a wallet on Linux.
There's a new wallet in development. It's not been released yet. You can always use Coinomi if Linux is being finicky. It's available for both android and iPhone. You can and should save your private key from Coinomi. There's a write up somewhere to get the wallet compiled and working on a raspberry pi also, as well there should be an option to reload the blockchain in the wallet app which will download the current block height.
Thank you. The wallet for android is not going to help me as I'm running the wallet for staking, but I tested it and it has nice support for many coins. That may come handy. Is there any ETA on the new wallet release? I will hold to my coins without staking until the new wallet is out.