Answer by taking a quote from the following article:

Ronald Shannon Jackson (January 12, 1940 - October 19, 2013) was an American jazz drummer and composer from Fort Worth, Texas. A pioneer of avant-garde jazz, free funk, and jazz fusion, he appeared on over 50 albums as a bandleader, sideman, arranger, and producer. Jackson and bassist Sirone are the only musicians to have performed and recorded with the three prime shapers of free jazz: pianist Cecil Taylor, and saxophonists Ornette Coleman and Albert Ayler.

His output slowed in the early 2000s due to nerve damage in his left arm. After consulting with a neurologist, Jackson declined surgery and was able to regain his strength through years of physical therapy. Physical limitations did not diminish his output as a composer, and he unveiled new material on YouTube in 2012. Jackson joined trumpeter Wadada Leo Smith's Golden Quartet with pianist Vijay Iyer and double-bassist John Lindberg in 2005. Their collaboration is documented on the Tabligh CD and the Eclipse DVD. He played with the Punk Funk All Stars in 2006, which included Melvin Gibbs, Joseph Bowie, Vernon Reid, and James Blood Ulmer. In 2008 Jackson and Jamaaladeen Tacuma toured Europe with The Last Poets; this collaboration was documented in the film "The Last Poets / Made in Amerikkka" directed by Claude Santiago. In 2011 Jackson, Vernon Reid and Melvin Gibbs formed a power trio called Encryption. During their trip to the Moers Festival in Germany, Jackson suffered a heart attack and underwent an angioplasty. The next day, he checked himself out of the hospital to play with Reid and Gibbs at the festival. Afterwards, Jackson checked himself back in for medical observation. On July 7, 2012, Jackson performed at the Kessler Theater in Dallas with the latest version of the Decoding Society, which includes violinist Leonard Hayward, trumpeter John Weir, guitarist Gregg Prickett, and bassist Melvin Gibbs. The new compositions were described as being as strong as the best of his recorded work. The performance was voted as one of the Ten Best Concerts of 2012 in the Dallas Observer.

How did he die?
Jackson suffered a heart attack and underwent an angioplasty.