VID:PID of your QHY?

Bus 001 Device 005: ID 1618:0921

Same as I have, are you using a custom QHY rules files somewhere? check under /lib/udev/rules.d and /etc/udev/rules.d and make sure no other QHY rule file there. Also make sure you use using the 85-qhy.rules files from the PPA which should be installed in /lib/udev/rules.d

I don't use a custom QHY rules files (or not voluntarily ). In /etc/udev/rules.d i don't have QHY rule files.

In /lib/udev/rules.d i have just one 85-qhy.rules file

You need to contact QHY or post at their forums then. Meanwhile, check if the QHY works under Windows just to make sure it is not defective in some way.

It's really weird because the camera works great on windows with firecapture or the qhyccd software. There are two months I had tried on my pi2 iastrohub distribution and my camera working fine with lin_guider.

I'll test the camera on my raspberry is using starspi software.

lin_guider doesn't use QHY Linux SDK. If there is an issue, it is with the QHY Linux SDK and hence you need to contact QHY for assistance.

I do not know if that helps but when I triggers a photo on the INDI, indi_qhy_ccd process takes 100% of my CPU (in top). I have to kill it because it does not fit with kstars.

I'll try to ask for help on the QHYCCD forum .
By cons I do not understand all these SDK's history.

More here:

qhyccd.com/bbs/index.php?topic=5104.0

Hi, dragonlost

I posted the problem what you and I have, since I couldn't find your article in QHY forum.
Unfortunately, nobody gives the answer about our problem.

If I have enough time in winter season, I'll compare the code of qhy5 control part between lin_guider and qhydriver.
The developer of lin_guider mentioned that the code is based on qhy linux driver.
Actually, I have no time to solve it and I have just little knowledge about C code.

I'll hope that the problem will be solved as soon as possible.
Thank you.

Hello. I'm also very interested by finding a solution.

Did you solve it ?