SANTA CLARA, Calif. — Civil rights leader Jesse Jackson spent most of this year pressuring the technology industry into facing up to the glaring scarcity of women, blacks and Latinos at companies renowned as great places to work.

Now comes Diversity 2.0 – finding ways to reverse a deep-rooted problem that isn’t going to be as easy to fix as writing new lines of code for a computer bug.

The challenges, along with some of the potential solutions, were explored Wednesday at a Silicon Valley summit organized by Jackson and his group, Rainbow Push. In a show of their commitment, Google, Apple, Facebook and more than 20 other tech companies sent representatives to the forum, held at the Santa Clara, California, headquarters of a Silicon Valley pioneer, computer chipmaker Intel Corp. The crowd of roughly 300 people also included entrepreneurs, academics and nonprofit groups hoping to change the cultural and educational forces that turned technology into an occupation dominated by white and Asian men.

“It definitely feels like we are entering a new phase,” says Laura Weidman Powers, CEO of Code2040, a San Francisco nonprofit that has been lining up technology internships for black and Latino college students for the past three summers. “When we first started, diversity just wasn’t on the list of these large companies that have power and potential to make change. Now, it really feels like it is.”

Wednesday’s forum marked the first time that many tech companies have publicly addressed their lack of diversity.

Gwen Houston, Microsoft Corp.’s general manager of global diversity, said she welcomed the opportunity because she believes technology companies and their top executives need to be held more accountable for the lack of women and non-Asian minorities on their payrolls. She pointed to Microsoft’s appointment of John Thompson, an African-American, as its chairman this year as a sign of progress.

“Change is happening, but not as fast as we want,” Houston said.