I have just bought a new printer, a LaserJet Pro M12w. It's so new that it isn't supported by HPLIP. Is there another driver that I could use until a proper one arrives?
Install it by selecting the HP Laserjet Pro CP1025nw driver which is part of the hplip package.
Untested by me, but here's the Source:
You could download the driver here. It's developed by community but works wonder.