Is it okay to submit a paper from a master's thesis without informing the advisor?
Under no circumstances can it be ok to submit with his name on it but without his explicit consent. This wouldnt be ok if he'd be enthusiastic about your research, and if he is not particularly fond of it, this will quite certainly end badly.

If you are confident that your advisor did not contribute to the planned submission in a meaningful way, the default course of action should be to sent him a message informing him of the planned submission and thanking him for the guidance received. That way, if he disagrees on not having contributed, there is a chance to fix stuff before they blow.