RHat 8.0. OpenLDAP 2.1.25. GQ 1.0Beta
From GQ's message log:
Connecting to localhost subschemaSubentry search on root DSE on server 'home.lan' No schema information found on server 'home.lan'
Check you ACL configuration then, perhaps access to subSchema is denied. GQ can read schema quite nicely, I can confirm that. And if it's GQ time, I can confirm that GQ works with SASL/GSSAPI authentication also.
mitu