Hi! Wrote a long and detailed answer and got lost when tried to send it... So I'll make it short this time...

Same problem with Polemaster and Astroberry server. Tracked down to permissions problem (probably within the QHY SDK?). One solution is to run kstars as root. A more elegant one is to run only indi_qhy_ccd as root. What I did is rename indi_qhy_ccd (i.e. indi_qhy_ccd_binary), create a shell script with this name that calls "sudo indi_qhy_ccd_binary", and add the script to the sudoers file with no password flags. Line could be something like this:

Please note that sudoers file should only be edited by using the "visudo" command, or you risk losing privileged access to the computer if you make any mistakes.

Then it works. It will be rewritten by next driver update, of course, and leaving indi_qhy_ccd_binary file. If the new driver works without issue, that's it, you can delete this file. If not you can still delete it, rename the new indi_qhy_ccd, and re-create the shell script.

As a note to developers, I also tried setting the setuid bit of indi_qhy_ccd, but that did not work. It worked setting it in qhy_ccd_test though...

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