create views page using entityreference
I assume that you have your entity reference field (pointing to speaker) on the content type "Presentation" below and that it is called "field_speaker".

In Views add a new View. Choose Show:Content (nodes), of type: Presentation.

Now you have all your presentations listed, with their titles. Let's leave it at that for now.

Open up Advanced to the right and open up Relationships, choose "Entity Reference: Referenced Entity - A bridge to the Content entity that is referenced via field_speaker".

Now we have the same result as before but we will be able to fetch data for the speaker through the relationship in the content type Presentation.

Under fields, click add and add the field called "Content: Title", now you have a dropdown that says "Relationship". Choose the only on available (field_speaker). Click apply.

You now have each presentation listed with it's title and the title of the presentations speaker.

Now you can go ahead and add the fields you wanted, sort the list etc.