Opened 14 years ago
Closed 13 years ago
#7411 closed defect (fixed)
COM Port not visible in Guest machine. => Fixed in SVN
| Reported by: | sebbie | Owned by: | |
|---|---|---|---|
| Component: | uart | Version: | VirtualBox 4.0.6 |
| Keywords: | COM Port | Cc: | |
| Guest type: | Windows | Host type: | Windows |
Description
The configured serial ports (COM Ports) do not function in the guest virtual machine
I configured my guest machine (running Windows XP) to use two serial ports (COM ports). Both COM ports are available on the host (Windows XP). But the COM ports do not run on the guest virtual machine. Why?
1: A look at Device Manager within the guest system shows NO COM Port available.
2: A test within the guest with an utility that requires these ports fail as if these ports were not there at all.
Even if I attach only one instead of two COM Port from the Host device, it still does not work.
What could be the cause of this? I will appreciate a fix of this bug.
Attachments (1)
Change History (9)
by , 14 years ago
| Attachment: | TPVBSeb317CN-2010-09-01-10-25-06.log added |
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comment:1 by , 14 years ago
| Component: | other → uart |
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comment:2 by , 13 years ago
| Summary: | COM Port not visible in Guest machine. → COM Port not visible in Guest machine. => Fixed in SVN |
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follow-up: 4 comment:3 by , 13 years ago
I have the very same problem with a WinXP VM hosted by v4.0.6 (on a WinXP PC).
comment:4 by , 13 years ago
I am trying to use my physical COM3 to VM COM1...
Replying to sbordoni:
I have the very same problem with a WinXP VM hosted by v4.0.6 (on a WinXP PC).
comment:6 by , 13 years ago
Since this problem was reported for v3.2.8, I supposed the v4.x should be the 'next major release'.
Anyway, do you need some logs... to ease the fix?
comment:7 by , 13 years ago
| Version: | VirtualBox 3.2.8 → VirtualBox 4.0.6 |
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No. The fix is already available in the public subversion repository and the next major release is not VBox 4.0 but the major release after it. The reason that we didn't backport the fix to VBox 4.0.x is that it could make Windows guest systems behave a little bit different (new hardware assistant popping up and so on).
The reason were the missing entries in the ACPI tables. This will be fixed in the next major release.