Problem with sharing serial port after upgrade from 5.2.28 to 6.0.X (#18668)

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Problem with sharing serial port after upgrade from 5.2.28 to 6.0.X (#18668)

Postby stagadet » 15. May 2019, 09:35


ModEdit; related ticket: #18668: Problem with sharing serial port after upgrade from 5.2.28 to 6.0.X

Hello,

I have a problem with a virtual machine running DOS 6.22 on Windows 10 Home 1803 Host, that I use to communicate with legacy PLCs through a serial port. I'm sharing the host COM port as host device.

Everything works fine with VirtualBox 5.2.28, but if I upgrade to 6.0.8 (I also tried with 6.0.6), the DOS program cannot communicate.

In the VBox.log (in the new version) I see messages like:
Code: Select all   Expand viewCollapse view
00:00:28.613321 Serial#0: Failed to change parameters to 2400,NONE,5,1 -> VERR_INVALID_PARAMETER
00:00:28.615033 Serial#0: Failed to change parameters to 9600,NONE,5,1 -> VERR_INVALID_PARAMETER
00:00:28.707566 Serial#0: Failed to change parameters to 9600,NONE,5,1 -> VERR_INVALID_PARAMETER
00:00:28.799691 Serial#0: Failed to change parameters to 9600,NONE,5,1 -> VERR_INVALID_PARAMETER
00:00:28.803813 Serial#0: Failed to change parameters to 9600,NONE,6,1 -> VERR_INVALID_PARAMETER
00:00:28.805203 Serial#0: Failed to change parameters to 9600,NONE,5,1.5 -> VERR_INVALID_PARAMETER
00:00:28.805770 Serial#0: Failed to change parameters to 9600,ODD,5,1 -> VERR_INVALID_PARAMETER


The full log is attached:
s5-2019-05-15-08-19-19.log
Full VBox.log
(100.97 KiB) Downloaded 3 times


Anyone as some hint on where to look to solve the problem?

Thanks in advance.
A
Last edited by socratis on 22. May 2019, 21:21, edited 1 time in total.
Reason: Added ticket related information.
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Re: Problem with sharing serial port after upgrade from 5.2.28 to 6.0.X

Postby socratis » 20. May 2019, 23:30

stagadet wrote:Anyone as some hint on where to look to solve the problem?

These kinds of problems that are reproducible, should be reported to the bug tracker. Either search for an appropriate bug, or open a new bug report where you'll attach your logs and other vital information.

It would also help if you can post the bug report number here so other can see the progress, add information, or see the final resolution.
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Re: Problem with sharing serial port after upgrade from 5.2.28 to 6.0.X

Postby stagadet » 22. May 2019, 14:14

Thank you for the hint.
I created bug report #18688.
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