Odd Tools:Ports behavior

CrossRoads · September 26, 2020, 2:04pm

Has anyone come across this?
My IDE 1.8.12 instance has been opened for a day+, a KeyeStudio Upgraded Mega (switching power supply) has been plugged/unplugged several times, and now I see the COM port it uses shown several times.
Still compiles uploads, runs ok,

anon57380292 · September 26, 2020, 2:06pm

I have never seen this before...

Ballscrewbob · September 26, 2020, 2:13pm

Seen similar when the COM stack has become corrupted.

The fix at this end is usually to reset it using the slightly longer method than the quick registry fix which only works occasionally.

Just unplug as many USB items as you can before doing it.

pert · September 26, 2020, 2:19pm

Yes:

github.com/arduino/Arduino

Upload fails after native USB board is disconnected w/ Serial Monitor open

opened 04:15AM - 05 May 19 UTC

closed 08:12AM - 18 Jul 19 UTC

per1234

Type: Bug Type: Regression Component: Uploading Component: IDE Serial monitor

Arduino IDE Hourly Build 2019/04/18 12:33 / Arduino IDE 1.9.0-beta build 105, Wi…ndows 10 64 bit 1. Plug the USB cable of a native USB (Leonardo, MKR, Due (Native USB Port)) into your computer. 1. Tools > Serial Monitor 1. Unplug the USB cable. 1. Close Serial Monitor (to avoid https://github.com/arduino/Arduino/issues/8518 when using Arduino IDE 1.9.0-beta). 1. Plug the USB cable of the board into your computer. It doesn't matter whether this is done before or after closing Serial Monitor. 1. Sketch > Upload The upload process completes successfully, but the Arduino IDE doesn't recognize this and after a delay the upload is shown to have failed with the error: ``` Couldn't find a Board on the selected port. Check that you have the correct port selected. If it is correct, try pressing the board's reset button after initiating the upload. ``` You must now exit the Arduino IDE and start it again before you can upload without the spurious failure. When using Arduino IDE 1.8.9 or the Hourly Build, disconnecting the board while Serial Monitor is open and then reconnecting causes multiple duplicate ports to be shown in the **Tools > Port** menu. This does not occur with Arduino IDE 1.9.0-beta, but the spurious upload failure still does occur. ![Clipboard02](https://user-images.githubusercontent.com/8572152/57188314-5e304800-6eb1-11e9-8c5d-50f3c1ed06f1.png) The duplicate ports and spurious upload failure issue does not occur with Arduino IDE 1.8.8. Originally reported at: - https://forum.arduino.cc/index.php?topic=613070 - https://forum.arduino.cc/index.php?topic=443558.msg4160634#msg4160634

Note that issue is actually about an upload failure that was caused by the same event that also caused the multiple Tools > Port menu entries. The upload error bug has been fixed in the production IDE release but the duplicate port listing bug was only fixed in the beta build of the Arduino IDE.

CrossRoads · September 26, 2020, 2:43pm

So, nothing to worry about then, IDE fixes will catch up.

pert · September 26, 2020, 3:15pm

I think it already has! I just tried it with the Arduino IDE 1.8.12 you're using and was able to reproduce the bug, then tried with Arduino IDE 1.8.13 and was not able to reproduce the bug.

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Odd Tools:Ports behavior

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