Thank you for response. Maybe I look idiot, but I am not. Sorry for mistake in typing (COM2_pipe vs VBOX_pipe). I pasted these from two different experiments. It is just typo. Of course I meant tem be the same. Now, when I am typing this, the VirtualBox screen is black, the WinDbg screen contains:
Microsoft (R) Windows Debugger Version 6.8.0004.0 X86 Copyright (c) Microsoft Corporation. All rights reserved. Opened \\.\pipe\VBOX_pipe Waiting to reconnect... Connected to Windows Server 2003 3790 x86 compatible target, ptr64 FALSE Kernel Debugger connection established. Symbol search path is: SRV*c:\Symbols*http://msdl.microsoft.com/download/symbols Executable search path is: This is what WinDbg says on Ctrl-alt-D: READ: Packet trailing byte timeout. READ: Ask for resend (ackable). PacketType=2, ByteCount=338, PacketId=80800000, READ: Packet trailing byte timeout. READ: Ask for resend (ackable). PacketType=2, ByteCount=338, PacketId=80800000, READ: Packet trailing byte timeout. READ: Ask for resend (ackable). PacketType=2, ByteCount=338, PacketId=80800000, READ: Packet trailing byte timeout. READ: Ask for resend (ackable). PacketType=2, ByteCount=338, PacketId=80800000, READ: Packet trailing byte timeout. READ: Ask for resend (ackable). PacketType=2, ByteCount=338, PacketId=80800000, READ: Packet trailing byte timeout. READ: Ask for resend (ackable). PacketType=2, ByteCount=338, PacketId=80800000, PacketType=2, ByteCount=338, PacketId=80800000, READ: Packet trailing byte timeout. READ: Ask for resend (ackable). PacketType=2, ByteCount=338, PacketId=80800000, READ: Packet trailing byte timeout. READ: Ask for resend (ackable). PacketType=2, ByteCount=338, PacketId=80800000, READ: Packet trailing byte timeout. READ: Ask for resend (ackable). PacketType=2, ByteCount=338, PacketId=80800000, READ: Packet trailing byte timeout. READ: Ask for resend (ackable). PacketType=2, ByteCount=338, PacketId=80800000, READ: Packet trailing byte timeout. READ: Ask for resend (ackable). READ: Received INVALID packet type. Throttle 0x10 write to 0x1 PacketType=2, ByteCount=338, PacketId=80800000, READ: Packet trailing byte timeout. READ: Ask for resend (ackable). PacketType=2, ByteCount=338, PacketId=80800000, READ: Packet trailing byte timeout. READ: Ask for resend (ackable). PacketType=2, ByteCount=0, PacketId=808af180, READ: Received INVALID packet Id. READ: Ask for resend (ackable). PacketType=2, ByteCount=338, PacketId=80800000, READ: Packet trailing byte timeout. READ: Ask for resend (ackable). PacketType=2, ByteCount=338, PacketId=80800000, READ: Packet trailing byte timeout. READ: Ask for resend (ackable). PacketType=2, ByteCount=338, PacketId=80800000, READ: Packet trailing byte timeout. READ: Ask for resend (ackable). PacketType=2, ByteCount=338, PacketId=80800000, READ: Packet trailing byte timeout. READ: Ask for resend (ackable). PacketType=2, ByteCount=338, PacketId=80800000, READ: Packet trailing byte timeout. READ: Ask for resend (ackable). PacketType=2, ByteCount=0, PacketId=808a27e0, READ: Received INVALID packet Id. READ: Ask for resend (ackable). PacketType=2, ByteCount=338, PacketId=80800000, READ: Packet trailing byte timeout. READ: Ask for resend (ackable). PacketType=2, ByteCount=338, PacketId=80800000, READ: Packet trailing byte timeout. READ: Ask for resend (ackable). PacketType=2, ByteCount=338, PacketId=80800000, and nothing else. I would be glad if it just worked but it doesn't. To be sure, this is the line from VM cfg file: <Port IOBase="0x3f8" IRQ="4" enabled="true" hostMode="HostPipe" path="\\.\pipe\VBOX_pipe" server="true" slot="0"/> this is the command line of Windbg: --------------------------- WinDbg:6.8.0004.0 --------------------------- "C:\Program Files\Debugging Tools for Windows\windbg.exe" -T "Debug VirtualBox" -y SRV*c:\Symbols*http://msdl.microsoft.com/download/symbols -k com:pipe,port=\\.\pipe\VBOX_pipe --------------------------- OK --------------------------- The WinDbg log says: READ: Packet trailing byte timeout. READ: Ask for resend (ackable). PacketType=2, ByteCount=0, PacketId=808a27e0, READ: Received INVALID packet Id. Seems that VirtualBox forgot to send couple of bytes to WinDbg(Packet trailing byte timeout), then, after WinDbg asked to repeat, it sent them, and WinDbg received them as INVALID packet Id. I would be glad to receive any hints that would enable me to track this issue and propose solution. After that I have restarted WinDbg (VirtualBox is still hanging) and the result is: Microsoft (R) Windows Debugger Version 6.8.0004.0 X86 Copyright (c) Microsoft Corporation. All rights reserved. Opened \\.\pipe\VBOX_pipe Waiting to reconnect... Thank you. _______________________________________________ vbox-dev mailing list vbox-dev@virtualbox.org http://vbox.innotek.de/mailman/listinfo/vbox-dev