VirtualBox

Opened 13 years ago

Closed 8 years ago

Last modified 8 years ago

#9109 closed enhancement (fixed)

There are only 2 serial ports available per virtual machine

Reported by: Amin Owned by:
Component: other Version: VirtualBox 4.0.8
Keywords: serial port Cc:
Guest type: Linux Host type: Windows

Description (last modified by Frank Mehnert)

It seems that VirtualBox cannot support more than 2 serial ports per virtual machine. This limitation severly hampers the usefulness of VirtualBox for my applications. I run virtualized fax servers that are portable across OSs and connect to external modems through mapped serial ports. For a typical 4 or 8 line fax board, this means I cannot scale the application to fully utilize the available hardware. As far as I know only VMWare supports unlimited serial ports per VM among the competition.

Change History (5)

comment:1 by BusyBoy, 12 years ago

Hi Aminm

Did you ever find a solution for this issue with virtualbox

"It seems that VirtualBox cannot support more than 2 serial ports per virtual machine. This limitation severly hampers the usefulness of VirtualBox for my applications. I run virtualized fax servers that are portable across OSs and connect to external modems through mapped serial ports. For a typical 4 or 8 line fax board, this means I cannot scale the application to fully utilize the available hardware. As far as I know only VMWare supports unlimited serial ports per VM among the competition. "

comment:2 by Netika, 9 years ago

Hello,

has anyone found any workaround ? I'm using VirtualBox as fax server too, and the only way I found is to install a second virtual machine to connect additionnal modems...

I have modems and can help for testing.

comment:3 by Maxim-Allen Mukhin, 8 years ago

Hello, I have stumbled at this limitation in version 5.0.12 (r104815). Likewise need more than 2 serial ports. Using serial ports for microcontroller development.

comment:4 by Frank Mehnert, 8 years ago

Description: modified (diff)
Resolution: fixed
Status: newclosed

Fix is part of VBox 5.0.16.

comment:5 by AmZaf, 8 years ago

The limitation is increased from 2 to 4 ports. I wish it would have increased to 16 to bring it in line with VMware virtual machine spec.

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