Date: Mon, 27 Oct 2014 19:09:17 -0700 From: Anthony Takata <htwiz2002@gmail.com> To: freebsd-emulation@freebsd.org Subject: /emulators/virtualbox-ose Serial port access? Message-ID: <CAD9n1_rTA9joJ94u=XuTDnWzGYf=52qJMfeQ_vehgM5ZmSQPQA@mail.gmail.com>
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So I have battled my way through various forum posts and sites around the internet, and I think I have whittled my issue down to something weird in VirtualBox. Basically, I am trying to pass a serial port into a VM for the purposes of running a fax modem. The modem appears on the FreeBSD host as /dev/cuau0, and I can use Minicom to open it and perform various AT commands at the host level. So, I have set a Windows 2012 VM to put the port as Com1 using the Serial Device /dev/cuau0. The problem is, communication is highly erratic inside the Guest, most characters not coming or going correctly, even under a simple HyperTerminal session. It is almost like the CTS pin is permanently active but the actual device is not really ready for data. Is this a known issue? Using VirtualBox 4.3.18_OSE on FreeBSD 9.2 Apparently the users and Oracle are pointing the finger at the oh-so-highly-customized-we-dont-know-what-they-did-to-it FreeBSD version of virtualbox, and will no lift a finger to help diagnose the issue.
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