SuSE Linux: Version 7.3
Kernel: Version 2.4.x
The virtual machine crashes with a memory access error when you try to operate a printer on the parallel port in bidirectional mode.
The virtual machine needs exclusive permissions for the parallel port in order to be able to operate the printer in bidirectional mode.
Disable the lpd daemon:
rclpd stop
and unload the corresponding module:
rmmod lp
After doing this, the printer should work perfectly in bidirectional mode, too.