Thanks so far, Daniel! - I still encounter the strange boot problems on that dock, but sometimes it works; in W10 as well as in kubuntu.
However, the non-detection of the monitor is 100%. I tried another cable, even a proper Samsung monitor (contrary to the digital TV as before). Nothing at all. In W10 the lenovo diagnostics does correctly receive and handle the EDID-data.
Therefore I did follow your suggestions and filed bugs under gdm3 and freedesktop.
Thanks so far, Daniel! - I still encounter the strange boot problems on that dock, but sometimes it works; in W10 as well as in kubuntu.
However, the non-detection of the monitor is 100%. I tried another cable, even a proper Samsung monitor (contrary to the digital TV as before). Nothing at all. In W10 the lenovo diagnostics does correctly receive and handle the EDID-data.
Therefore I did follow your suggestions and filed bugs under gdm3 and freedesktop.
Thanks again and kind regards,
Uwe