VirtualBox: Could not claim parallel port

You try to run Oracle VirtualBox with a direct access to the parallel port at your Linux box, but it fails with the following error message:

Error: failed to start machine. Error message: Parallel#0 could not claim parallel port ‘/dev/parport0’Be sure that no other process or driver accesses this port (VERR_DEV_IO_ERROR).
Parallel device 0 cannot attach to host driver (VERR_DEV_IO_ERROR)

The main point: you have to unload the Linux kernel module lp, which is blocking access to the port, like this:

  • rmmod lp



You might also either add your user to groups having file access permissions for the device or modifying the permissions to give access to more users.


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