Just a short update: I tried with my 3.5.9 astroberry image: QHY camera works great. lsusb output is the same. After switching the SSD to Stellarmate 1.7.2 without disconnecting the camera: again QHY driver crash!
So there is something wrong with the new version either kstars or libindi
I just downloaded the complete SM 1.7.2 but the 64bit version, since I wanted to change anyway and was curious if my camera works in 64bit. My former installation was 32bit. I installed it from scratch and it works. So maybe the compilation of the QHY driver for the 32bit version has been forgotten.