Thanks Mattia.

> had a look at the logs, they look mostly normal to me, and if the ttyUSB1 stays that way I wouldn't bother too much,

Gotta disagree there. It’s a BIG problem.TtyUSB1 is NOT available before starting EKos and only comes into view after this error in the log AND TTYUSB0 disappears So I would have to change the configuration when this happens, every time. And even then, I have no guarantees it won’t switch back. Gotta find a solution to this.

>> do you have a so called eqmod cable? it seems pl2303 may look like one and the eqmod chip may cause problems on Linux (I recomment in fact using normal USB cables).

Gee, I don’t know! I simply bought a USB-RJ cable and went with it. I could look for a different cable and would welcome recommendation on where to buy one.

I will also try the config change you recommend.

But did you check the link to the other post I provided? This one details mysterious failures on the focuser and camera soon after a successful connection. Would this change affect these devices?

I am increasinlglv convinced that these problems are all related. I sent that post to the Ekos forum because it happened shortly before the one with USB ones. My leading suspect is the Pi5, as these problems did not appear with the 4 I used to use.

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