[SunHELP] Sun-VTS, why graphics (m640 (m64 test)) always fail ?

[harry]

Dear  all,

when i running sunvts 2.1.2  in  solaris 2.6  (5/98)
why graphics (m640 (m64test)) always give a red light
or fail.  I  don't know what happens with my machine,
because all of things  running well. I have already
install a new  Patch 2.6  recommended.
Can u help me guys ...
for  your  information i use Sun Ultra 10.
Thanks in advance
Harry C Wibowo