ToupTek GPM174M not working in PHD2

[imaluschi]

I'm trying to get my new ToupTek GPM174M working in PHD2.

It was already nearly not possible to create a dakr-library. After disconnecting all other hardware except the ToupTek cam, only start Indi Web Manager and PHD2 it was possible to take dark pictures for creating a dark library.

Normally KStars is started, Indi-Server connected and starting of PHD2 afterwards.

In PHD2 it's possible to connect the camera (Indi), it is shown "camera connected".

But when trying to start looping, nothing happens until the message of problems and disconnecting the camera appears. It's always the same, every time I try after disconnecting from Indi with or without restarting Indi-Server, even after reboots including powering off and on all hardware.

Desktop:

• Raspberry Pi 5 Model B Rev 1.0
• OS: Raspberry Pi OS, Debian GNU/Linux 13 (trixie), 13.2
• Kernel 6.12.51-v8-16k+
• Indi Version 2.17, Indi + indi-3rdParty built from git 2025-12-19
• KStars 3.8.1 Beta, Build: 2025-12-28T11:15:50Z
• PHD2 Guiding 2.6.13dev8

For test reason it seems to be possible to take pictures with the guiding cam in KStars - it worked when taking pictures for (manually) focussing. Stopping taking pictures in KStars and trying to start looping in PHD2 fails as described above.

Guiding with a ZWO ASI Cam works as expected.

More Information:

indiserver -v indi_ioptronv3_telescope indi_asi_ccd indi_toupcam_ccd indi_toupcam_focuser indi_toupcam_wheel

Indiserver-Output after starting KStars, connecting and then start and connecting in PHD2, close it (after not working) and start it again.

[pchev]

I think the error is you select to use the native driver in PHD2 but the camera is already used by INDI, it cannot connect to the two at the same time.
You have two choice to fix it:

• select "INDI camera" in PHD2, then the 174M the same as you do for the mount.
• keep the native driver in PHD2 but remove the 174M from INDI.

Also for support request of this kind you need to use the user group: https://groups.google.com/g/open-phd-guiding

[imaluschi]

Many thanks!

I figured out what I did wrong - maybe it help others:
When choosing the camera it was shown my ZWO ASI as "Indi Camera" and other cameras below, where I choose the ToupTek Camera.

After reading your post, I was able to find out that I had to choose the Indi Camera, even tough the ASI Cam was shown. The correct camera have to be choosen by clicking on the toolbox-button.