id,summary,reporter,owner,description,type,status,component,version,resolution,keywords,cc,guest,host 1281,No serial port on Windows 2000 guest machine,Matthai,,"I am using the latest version (1.5.6) of Vbox on Ubuntu. I have Win 2000 guest virtual machine. I have enabled one serial port (COM1) - port mode is Host device, port path is /dev/ttyS0. However, in Win2000 I can't see any COM port. I got an error at shutdown: Ioctl failed for serial host device '/dev/ttyS0' (VERR_INVALID_POINTER). The device will not work properly. Error ID: DrvHostSerialFail Severity: Warning In VBox.log there are several lines with this: 00:05:36.795 ERROR [COM]: aRC=0x80070005 aIID={fd443ec1-0006-4f5b-9282-d72760a66916} aComponent={Mouse} aText={The console is not powered up} aPreserve=false 00:05:36.805 ERROR [COM]: aRC=0x80070005 aIID={fd443ec1-0006-4f5b-9282-d72760a66916} aComponent={Mouse} aText={The console is not powered up} aPreserve=false 00:05:36.815 ERROR [COM]: aRC=0x80070005 aIID={fd443ec1-0006-4f5b-9282-d72760a66916} aComponent={Mouse} aText={The console is not powered up} aPreserve=false 00:05:36.825 ERROR [COM]: aRC=0x80070005 aIID={fd443ec1-0006-4f5b-9282-d72760a66916} aComponent={Mouse} aText={The console is not powered up} aPreserve=false 00:05:36.836 ERROR [COM]: aRC=0x80070005 aIID={fd443ec1-0006-4f5b-9282-d72760a66916} aComponent={Mouse} aText={The console is not powered up} aPreserve=false 00:05:36.846 ERROR [COM]: aRC=0x80070005 aIID={fd443ec1-0006-4f5b-9282-d72760a66916} aComponent={Mouse} aText={The console is not powered up} aPreserve=false 00:05:36.856 ERROR [COM]: aRC=0x80070005 aIID={fd443ec1-0006-4f5b-9282-d72760a66916} aComponent={Mouse} aText={The console is not powered up} aPreserve=false And machine does not shut down normally, but it is aborted. Any idea?",defect,closed,uart,VirtualBox 1.5.6,duplicate,,,Windows,Linux