Steve Cohen
Steve Cohen replied to the topic 'Errors due to port instability' in the forum. 2 weeks ago

I spent a frustrating morning playing with my rig in three different setups.
1. No Dongle
2. Dongle connected after Pi booted
3. Dongle connected before Pi boot (the situation last night).
In no case could I reproduce the problem I saw last night. I made the mount go to various objects which were all invisible (due to my doing this in daylight hours) but in all cases the scope was pointed in the right general direction according to the map in KStars. If the problem had recurred, i would have seen error messages like these I saw last night

[2024-04-17T20:32:32.364 MST DEBG ][           org.kde.kstars.indi] - Celestron Advanced VX HC : "[DEBUG] CMD <e> "
[2024-04-17T20:32:32.364 MST INFO ][           org.kde.kstars.indi] - Celestron Advanced VX HC :  "[ERROR] Serial write error: Write Error: Input/output error "
[2024-04-17T20:32:32.365 MST INFO ][           org.kde.kstars.indi] - Celestron Advanced VX HC :  "[ERROR] Failed to read RA/DEC

Failed to read RA/DEC is a sign that communication with the mount is lost.

So I'm going to try your suggestions.

I looked at the /lib/udev/rules.d/25-gpsd-usb.rules file and it seems to include my gps device:
Screenshotfrom2024-04-1813-51-59.png

So that doesn't appear to be the problem.

But the USB/RJ cable appears to be more interesting.
Screenshotfrom2024-04-1814-03-20.png


Why would my USB/RJ cable be found under GPS devices?? Could that be the source of the confusion?

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