![]() ![]() VBoxManage setextradata "VBoxInternal/PDM/DriverTransformations/SerialTrace/AttachedDriver/Driver" "IfTrace" VBoxManage setextradata "VBoxInternal/PDM/DriverTransformations/SerialTrace/AttachedDriver/Config/TraceFilePath" "" VBoxManage setextradata "VBoxInternal/PDM/DriverTransformations/SerialTrace/AboveDriver" "Host Serial" Is there anything special about the null modem connection, like are you trying to use hardware flow control, etc.? Can you describe step by step what the setup looks like and what kind of applications you are using to trigger that error? We also need a special trace from the serial operations which can be enabled with the following commands: The log by the OP shows that even setting the serial parameters fails with EIO which is very unusual. Nothing like that reproducible here locally unfortunately. I try to attach the output of the lspci -v command. On me todo list is to investigate the ttyS* with a serial port monitor. Perhaps KRML can tell me where to get Debianpackages for download. I have tested the serial ports with a loopback adapter: To restart I/O transfer suspend and resume the VM after fixing the underlying issue.Įrror ID: SerialPortIOError Severity: Warning This can be caused by bad cabling or USB to serial converters being unplugged by accident. The host serial port "/dev/ttyS0" encountered a fatal error and stopped functioning. Sorry for the long time you waited for my answer. ![]()
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