Display entries by current entry author?
In order to display all other entries by an author except the current one, you will need to perform another step — either by filtering out the current entry from the query or adding a conditional.

{% set authorId = entry.author.id %}
{% set allEntryIds = craft.entries.section('blog').authorId(authorId).limit(null).ids() %}
{% set otherEntryIds = allEntryIds|without(entry.id) %}
{% set otherEntries = craft.entries.section('blog').id(otherEntryIds) %}

&lt;ul&gt;
    {% for entry in otherEntries %}
        &lt;li&gt;&lt;a href="{{ entry.url }}"&gt;{{ entry.title }}&lt;/a&gt;&lt;/li&gt;
    {% endfor %}
&lt;/ul&gt;


or

{% set authorId = entry.author.id %}
{% set authorEntries = craft.entries.section('blog').authorId(authorId).limit(null) %}
&lt;ul&gt;
    {% for authorEntry in authorEntries %}
        {% if not authorEntry.id == entry.id %}
            &lt;li&gt;&lt;a href="{{ entry.url }}"&gt;{{ entry.title }}&lt;/a&gt;&lt;/li&gt;
        {% endif %}
    {% endfor %}
&lt;/ul&gt;