Hartmut Schirmer wrote:
Please use ::B to force banking instead of linear framebuffer and check if the 8bpp modes and up still work. If they fail try ::BR ...
You are right set GRX20DRV=VESA::B gw 1024 gh 768 nc 256 (or 64k or 16M)
and running test/demogrx and test/bgi/bccbgi I see various failures
Replacing by ::BR everything is correct !!
Maurice