Any chance you could try out a Dapper installation (you don't have to actually do the install, just boot from a Dapper install CD, such as the latest Flight release) and see if that works? It's possible that switching the console to 640x400 by default has sorted this out.
Any chance you could try out a Dapper installation (you don't have to actually do the install, just boot from a Dapper install CD, such as the latest Flight release) and see if that works? It's possible that switching the console to 640x400 by default has sorted this out.