Well, I found the two laserdisc releases you metioned and well... the first one I found has surround:
http://www.lddb.com/laserdisc/01099/ID5304PA/Koyaanisqatsi:-Life-Out-of-Balance-(1983)
and the other is stereo:
http://www.lddb.com/laserdisc/24864/PA-12-539/Koyaanisqatsi:-Life-Out-of-Balance-(1983)
For the LD with stereo, I found this listing on eBay:
For surround: