serial portvirtualbox
My host is ubuntu 11.04.
The guest is WinXP VirtualBox is 4.0.10
The serial port works well with putty in ubuntu.
I setup as: COM1/4/0x3F8/Host Device/
Port Path: /dev/ttyS0
Then I close putty, to make serial port is free. After windows XP and Device Manager started, I see there is a LPT1 instead of COM1 under "Ports(COM & LPT)"
I followed the procedure in this topic( How to access serial ubuntu host serial port on VirtualBox guest OS ), but the issue keeps not resolved.
Thanks for any help.
Setting up a serial port for VirtualBox is not easy, mainly because of many options on how to transfer data from the host to the guest. For transferring data from/to an attached device (here a modem) the following settings should work:
Of course you will have to adopt setting for your device on the host (that would be /dev/ttyS2 in your case).
If using an IRQ greater than 15 for the host you will have to enable I/O APCI as shown here:
After a setup depicted in the example here your Windows guest will see a virtual type 16450 serial port on COM1 using IRQ4 and I/O Port 0x3F8. Data will be transferred from and to host device /dev/ttyS20.
Your user is not in the group that has access the serial port. You can either run Virtualbox as root (Not recommended ), or add your user to the group.
sudo usermod -a -G dialout <username>
You might have to logout and login again to make this work.
Cheers
Best Answer
You may suffer from a bug in earlier versions of virtual box:
https://www.virtualbox.org/ticket/7411
This issue was fixed from Virtual Box release 4.1.0.
You may succed by simply upgrading to the most recent version (at present 4.1.8).