hello Åke
I've had the same issue since i bought my mount, a Ioptron GEM28. Since it helps to just disconnect and connect again, I made a script which looks for error messages in the logs, disconnects the mount, connects again and then continues to look for errors.

However, since I finished the script about 2 months ago I have not had one of these errors so this remains untested. I paste the script at the bottom of this message. change your user name and name of mount (by writing indi_getprop in terminal). Then save the script somewhere, for example ioptron_disconnect.sh, and let it run in terminal when you image. I am using Ubuntu. Beware it is not actually tested at this point, but maybe this can be of help to you.

Another thing I did was to buy a usb-cable marketed for music instruments since I figured that musicians dont like equipment disconnecting either. It is possible that this is what finally helped for me, but I am not sure. I feel like really cold temperatures (-15C) play a part in these issues.

Cheers
Hnastro

---

//

link to cable:

www.gear4music.no/no/G4M/UDG-Cable-USB-2...utm_content=ord-line

the script:

tail -F -n 1 /home/USER/.local/share/kstars/logs/*/* |
grep --line-buffered 'Input/output error' |
while read ; do echo 'connection error, disconnecting in 5';
sleep 5; indi_setprop 'iOptron GEM28.CONNECTION.DISCONNECT=On' ;
echo 'disconnected, reconnecting again in 5' ;
sleep 5; indi_setprop 'iOptron GEM28.CONNECTION.CONNECT=On' ;
echo 'connected again, monitoring for more errors'; done

Read More...