Same problem for me.
My mount is not very precise and I have around 10% waste.
I just installed Kstars 3.6.0 and still the same problem:
Unable to resume shooting if the drift is too great. The sequence is purely and simply cancelled.
I switched to CCDciel which has the option to resume shooting if the drift is too great. Its only flaw is the somewhat slow planetarium on low-powered machines.
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I also had a lot of problems with the version that came with Indi 1.9.1.
I compiled the version of Azwing (github.com/azwing/indi), then just replaced indi_lx200generic in my existing installation (in /usr/bin/).
That works well.
I think it must be possible to also recompile version 1.9.0 and replace indi_lx200generic
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It's ~/.indi/OnStep_config.xml
My park position is 0° alt and 0° az (telescope horizontal).
For the two drivers, in the mount tab, position is bad before unpark. But the reticle is good with your driver and not in the james driver.
It's very strange...
Same issue with Skychart (Cartes du ciel): Position is ok with your driver, not ok with james driver.
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Hello,
I just tested with my setup.
I am unable to unpark the mount.
With the azwing driver the position of the mount on the map is correct and I can unpark the mount.
With the james-lan driver, the position of the mount on the map is wrong and I cannot unpark the mount.
I deleted the xml files just in case.
I will find out where it can come from.
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Hello,
Tested in real conditions with Kstars and CCDciel ...
Indi drivers:
- Your indi_lx200_OnStep
- Modified RolloffIno
- Snapcap for the flat panel
- ZWO drivers for the two CCD and the filter wheel
- WeatherRadio for weather conditions
- Watchdog
It works \ o / Thanks 
Kstars automatic sequence:
- Unpark dome
- Open cap
- Unpark mount
- Goto star
- 3 pictures Red
- 3 pictures Green
- 3 pictures Blue
- 3 flats (Luminance filter):
- Park dome
- Park mount
- Switch on the flat panel
- 3 shots.
- Switch off the flat panel
- 1 dummy flat to change the filter (Dark filter) (You cannot choose a filter for darks in Kstars).
- 3 bias
- 3 darks
- Warm CCD, close cap, (mount and shelter already parked by the flat sequence).
End of sequence without error.
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I just saw on version 1.8.9:
When I press the "Park" button, the "Unpark" button is activated for a fraction of a second, then becomes gray again until the end of the parking lot.
On version 1.9.1, the "Unpark" button becomes active from the start of the park.
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In the previous version of the Indi driver (1.8.9), it seems to me that the mount went into "sleewing" mode during the park and not "Parking".
Maybe the difference is there.
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Yes, I think the problem is with Kstars.
It works fine with CCDciel.
I wonder if Kstars does not confuse "Parking" and "Parked"
In an old version of Indi there was the possibility to choose: "Dome park mount" but that no longer exists.
In manual mode, my shelter parks the mount if it is not parked. I will try to implement it for automatic mode (with Indi).
So I will no longer park the mount with Kstars, it is the shelter that will take care of it.
Otherwise, CCDciel works very well
And thank you again for all this work.
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It still doesn't work for me 
When I press "Park", Kstars instantly considers the telescope to be parked as it moves to the park.
It then attempts to close the dome. But it only closes if the mount is parked.
Kstars then leaves in error.
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Thank you so much.
I will test.
Anyway, I still have the old version compiled in case of problem
Now, it's easy to switch of versions (production and devel 
).
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No, with Ubuntu 20.04 i have issues with wakeolan and i don't want to use snapd.
Kstars seems to work fine with Ubuntu 20.04 (tested with my desktop on Kubuntu 20.04).
I've found an another solution for my problems of park/unpark:
- Install indi drivers 1.9.1 (latest)
- Get the 1.8.9 indi sources
- Get the 1.9.1 indi sources
- copy indi-lx200_OnStep 1.8.9 in source code of indi 1.9.1
- Compile indi 1.9.1
- Copy the compiled indi-lx200generic in /ust/bin/
And it's work \o/ Park and unpark are OK.
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I've downgraded my setup:
Ubuntu Mate 20.04 -> Ubuntu Mate 18.04
And compiled indi drivers 1.8.9
And all is working \o/
I'm waiting for Indi 1.9.9 for upgrade
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