Telescope control plugin is spamming on serial link after connecting Nexstar telescope

[Fotrenu]

Expected Behaviour

Stellarium is connecting a link on serial port ONLY with a telescope connected
Stellarium is NOT spamming on serial port from this moment

Actual Behaviour

Stellarium is connecting a link on serial port with or without a telescope connected
Stellarium is spamming on serial port from this moment

Steps to reproduce

IMPORTANT: There is no need to have a telescope to trigger this issue. Only an USB to serial adapter cable is needed
IMPORTANT: this issue is happening with QT5 and QT6 based releases

• install an USB to RS232 cable adapter --> it creates a COMx virtual port
• open Stellarium
• add a new telescope with the COMx virtual port of the USB to RS232 cable (Nexstar compatible, but the bug is present even with the other ones)

• without connecting any real telescope, click on START

• the serial connection is established

• from this moment on Stellarium is spamming the serial connection with a lot of IRP_MJ_READ empty requests

System

• Stellarium version: stellarium-24.4-qt5-win64.exe
• Operating system: Windows 11
• Graphics Card: not interesting, Radeon 5500XT
• Screen type (if applicable): laptop monitor 1920x1080

Logfile

log.txt

[gzotti]

(Note previous discussion in #4055.)

[github-actions]

This is a good task for the community to participate in the contribution into Stellarium. Who wants to help us?

[alex-w]

Please share the model name of the mount/telescope

[Fotrenu]

Please share the model name of the mount/telescope

Celestron Nexstar 114 GT

[alex-w]

@Fotrenu please try switching Stellarium to English language and check it again (after reading the log)

[10110111]

please try switching Stellarium to English language

Oh, great point! We do need to somehow validate the translations more strictly regarding HTML tags, QString::arg placeholders etc.

OTOH, I wouldn't bet that this is the culprit here, since this is just a user-visible string.

[Fotrenu]

@Fotrenu please try switching Stellarium to English language and check it again (after reading the log)

Dear @alex-w thank you!
I am not sure I understood. What I just did is

• launch Stellarium,
• go to general setting
• select English as Stellarium language
• connect the serial connection

the result is exactly the same. Log attached
log.txt

What do you mean that I need to read the log?

Thank you for your help.