Host OS - OS X 10.6.4 Guest OS - Ubuntu 10.04 Parallels 6 I am a hardware developer and have a board that is using an FTDI 232R USB to Serial chip. When I plug in the board, I get the selection for connecting to the Host or Guest OS and I select Guest (Ubuntu). It appears as /dev/ttyUSB0 I am using an application that tries to talk to the board. This application does not work correctly when I try to talk to the device directly by configuring the app to use /dev/ttyUSB0 as the serial port. However, in trying to identify the problem, I came across a program 'interceptty' to capture the traffic in both directions. When I started using this, everything started working. After some testing, I've discovered that using /dev/ttyUSB0 directly fails and using 'interceptty' works fairly consistently. Interceptty sets up the following: new virtual serial device /dev/pts/4 App <---> /dev/pts/4 <--- interceptty ---> /dev/ttyUSB0 This app works fine in a non-VM environment. Any ideas on why there would be this issue?
Issues still exist I'm using Ubuntu 11.10 and Parallels 7 for Mac. The issue appears to continue. However, I discovered using mini com that the ttyUSB is readable (ie. you can see the output of the serial device) but I'm unable to write to it.
